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233
Jun 19, 2010
06/10
by
Alexander, J. A.; Macklin, B. A
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No Abstract Available
Topics: ELECTRODEPOSITION, HIGH STRENGTH, WHISKER COMPOSITES
Electrodeposition is a non-line of sight deposition technique which is also applicable for complex 3D structures. Even with this outstanding coating method there is a challenge in electroplating of complex 3D materials with a high porosity. In this work we developed special process parameter regarding the design of the plating cell and deposition parameter to ensure a nearly homogeneous coating of open cell metal foams. Based on field scans of the magnetic flux density a technique for the...
Topics: Electrodeposition, Metal Foams, Nanocrystalline, Magnetic Flux Density, Compression Tests
Georg Hass & Rudolph E. Thun ( Eds.) Physics of Thin Films vol 4 Academic Press 1967 Acrobat 7 Pdf 22.8 Mb. Scanned by artmisa using Canon DR2580C + flatbed option
Topics: Thin Film Optics, Single Crystal Films, Thin Glass Films, Electrodeposition
286
286
Jul 11, 2010
07/10
by
Elkins, W
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The feasibility of providing a high pressure, very mobile and reliable space suit glove system is demonstrated. A 'soft' toroidal wrist joint assembly was developed. A representative Kevlar and steel wrist section was tested and proved the useful lifetime to be in excess of 1,000,000 cycles. Improved comfort was accomplished by increasing the first finger metacarpal dimensions. Recommendations concern design refinements, and EVA configuration.
Topics: ELECTRODEPOSITION, ELECTROLYTES, ORGANIC MATERIALS, SODIUM, ALUMINUM, CONDUCTIVITY, ELECTROLYTIC...
Earnest Yeager & Alvin J. Salkind Techniques of Electrochemistry ( Volume 3 ) John Wiley & Sons Inc. 1978 Acrobat 7 Pdf 23.1 Mb. Scanned by artmisa using Canon DR2580C + flatbed option
Topics: Chemistry, Electrolysis, Electrochemical Machining, Batteries, Semiconductor Applications,...
292
292
Jun 20, 2010
06/10
by
Criscione, J. M.; Rexer, J
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Fused salt electrodeposition and examination of iridium protective coatings on tungsten, molybdenum, and niobium
Topics: ELECTRODEPOSITION, TUNGSTEN, ELECTRODEPOSITION, METAL COATING, PROTECTIVE COATING, REFRACTORY...
Topics: DTIC Archive, NAVAL AIR SYSTEMS COMMAND JACKSONVILLE FL, *CHROMIUM, *PLATING, COATINGS,...
This report is prepared as the final report for SERDP Project PP-1152, Electroformed Nanocrystalline Coatings: An Advanced Alternative to Hard Chrome Electroplating. The purpose of the project is to develop an environmentally benign, cost-effective replacement for hard chrome to be applied to non-line-of-sight-surfaces. The project incorporates electrodeposited nanocrystalline technology that produces materials with comparable performance to hard chrome. The report is organized into activities...
Topics: DTIC Archive, INTEGRAN TECHNOLOGIES INC TORONTO (ONTARIO), *COBALT ALLOYS, *ELECTROPLATING,...
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268
Jul 11, 2010
07/10
by
NON
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The uses of test equipment and techniques used in space research and development programs are discussed. Modifications and adaptations to enlarge the scope of usefulness or divert the basic uses to alternate applications are analyzed. The items of equipment which have been of benefit to professional personnel in the enlargement and improvement of quality control capabilities are identified. Items which have been simplified or made more accurate in conducting measurements are described.
Topics: CHROMIUM, ELECTROCHEMISTRY, ELECTRODES, SULFATES, ELECTROCHEMICAL OXIDATION, ELECTRODEPOSITION,...
The following topics were discussed at the meeting: Carburizing and Induction Hardening, Nitriding, Surface Hardening with Metalloid Elements, Siliconizing, Vapordeposited Coatings, Chemical Surface Treatment, Electrodeposited Coatings and Wear and Friction Studies.
Topics: DTIC Archive, WATERTOWN ARSENAL LABS MA, *TITANIUM, CASE HARDENING, ELECTRODEPOSITION, FRICTION,...
In the frame of the grant W911NF-11-1-0386, this 4th interim report is focused on the fabrication of Cu2O/TiO2 nanotubes heterojunction arrays to be used in photovoltaic or photoelectrochemical solar cells. The presence of Cu2O nanoparticles on the TiO2 NTs surface may overcome the low charge separation efficiency because of the superior host structure provided spatially by the TiO2 nanotubes array besides their matched energy bands. Moreover, the highly ordered nanotube arrays creates a better...
Topics: DTIC Archive, PALERMO UNIV (ITALY), *ARRAYS, *HETEROJUNCTIONS, *PHOTOELECTRICITY, COPPER OXIDES,...
364
364
Jun 21, 2010
06/10
by
Benedict, A. G
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Reliability engineering and small sample tests for aerospace ordnance items
Topics: HIGH TEMPERATURE, ELECTRODEPOSITION, ELECTROLYTES, FLEXING, HEAT TREATMENT, IRIDIUM, MOLYBDENUM,...
Topics: DTIC Archive, SCHLECHTEN, ALBERT W., MISSOURI UNIV-ROLLA SCHOOL OF MINES ANDMETALLURGY, *TITANIUM,...
Intermediate layers of chromium, nickel, and/or iron have been sputtered on titanium substrates. In the latter cases, upon subsequent chromium electrodeposition, adherence was localized and nonuniform. Chromium electrodeposits on chromium intermediate-sputtered layers, however, were uniform and adherent as indicated by bend tests. Experimental procedures are described and results are discussed.
Topics: DTIC Archive, SPRINGFIELD ARMORY MA, *SPUTTERING, *TITANIUM, ADHESION, CHROMIUM, ELECTRODEPOSITION,...
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326
Jul 11, 2010
07/10
by
FREYTAG, G
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THE AVAILABLE COMPRESSOR INSTALLATIONS RESTRICT THE USE OF THE NEW WIND TUNNEL TO AN INTERMITTENT OPERATION SCHEDULE. OPERATIONAL DETAILS ARE DISCUSSED, TAKING INTO ACCOUNT THE EMPLOYMENT OF SUCTION AND PRESSURE. THE DESIGN OF THE WIND TUNNEL IS CONSIDERED, GIVING ATTENTION TO THE LAVAL NOZZLE, THE FREE JET CHAMBER, THE DIFFUSOR, AND THE TRANSONIC CHAMBER.
Topics: CORROSION, MATERIALS, MECHANICAL DEVICES, METALLURGY, SUSPENSION SYSTEMS (VEHICLES), BANDS,...
This technique separates a single narrow zone of sample mixture in an electrolyte medium into many zones containing a single component of the mixture and electrolyte between them. Since the densities of the separated zones generally differ from that of the intervening medium, such systems are gravitationally unstable and stabilization is required. The various techniques for stabilization include using the capillary space provided by thin films, the interstices of solid material such as filter...
Topics: NASA Technical Reports Server (NTRS), ELECTROLYTES, ELECTROPHORESIS, FLUIDS, MOLECULAR WEIGHT,...
The ESD process is comprised of generating an arc through a consumable electrode via capacitive discharge. The electrode and substrate materials are melted, rapidly solidify, and build-up occurs incrementally.
Topics: DTIC Archive, ADVANCED SURFACES AND PROCESSES INC CORNELIUS OR, *ELECTRODEPOSITION, ELECTRODES, GAS...
Partial contents: Electrodeposition, has long history, is an important current technology, will play pivotal role in nanofabrication. Topics: Controlling morphology, The dual-damascene method, Electroless deposition, Multilayer electrodeposition.
Topics: DTIC Archive, Schwarzacher, W, BRISTOL UNIV (UNITED KINGDOM), *ELECTRODEPOSITION, *NANOTECHNOLOGY,...
The various processes were reviewed and evaluated for their effectiveness in blackening mild steel, 300 and 400 corrosion resistant steels. The corrosion resistance of these coatings were also investigated. A low temperature Class 4 proprietary alkaline-oxidizing process was proposed for blackening only the 300 series stainless steels in lieu of the fuzed salt oxidizing process which operates at 760F. The Class 2 alkaline-chromate process did not blacken the 300 series stainless steels. Class 3...
Topics: DTIC Archive, ROCK ISLAND ARSENAL IL, *CHROMATES, *CORROSION RESISTANCE, STEEL, OXIDATION, OXIDES,...
Topics: DTIC Archive, NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD, *ELECTRODEPOSITION, *NAVY,...
The Gordon Research Conference (GRC) on Electrodeposition was held at Colby-Sawyer College, New London, NH, August 13-18, 2000. The conference was well attended with 106 participants. The attendees represented the spectrum of endeavor in this field coming from academia, industry, and government laboratories, both US and foreign scientists, senior researchers, young investigators, and students. In designing the formal speakers program, emphasis was placed on current unpublished research and...
Topics: DTIC Archive, Stickney, John, GORDON RESEARCH CONFERENCES INC KINGSTON RI, *SYMPOSIA,...
The ESTCP is sponsoring this project to demonstrate and validate ElectroSpark Deposition (ESD) as technically feasible and commercially viable for a production-scale process, and to perform the tests necessary to transition ESD for use on gas turbine engine components.
Topics: DTIC Archive, ADVANCED SURFACES AND PROCESSES INC CORNELIUS OR, *ELECTRODEPOSITION, *ENGINE...
The goals of this project are to demonstrate and validate ElectroSpark Deposition (ESD) as technically feasible and commercially viable for a production-scale process, and to perform the tests necessary to transition ESD for use on gas turbine engine components.
Topics: DTIC Archive, ADVANCED SURFACES AND PROCESSES INC CORNELIUS OR, *ELECTRODEPOSITION, *ENGINE...
Metal-containing nanostructured films are prepared by electrodepositing a metal-containing composition within the pores of a mesoporous silica template to form a metal-containing silica nanocomposite. The nanocomposite is annealed to strengthen the deposited metal-containing composition. The silica is then removed from the nanocomposite, e.g., by dissolving the silica in an etching solution to provide a self-supporting metal-containing nanostructured film. The nanostructured films have a...
Topics: NASA Technical Reports Server (NTRS), ELECTRODEPOSITION, METAL FILMS, NANOCOMPOSITES, POROSITY,...
A literature analysis is presented of reports, specifications, and documented experiences with the use of electroforming to produce copper and nickel structures for aerospace and other engineering applications. The literature period covered is from 1948 to 1974. Specific effort was made to correlate mechanical property data for the electrodeposited material with known electroforming solution compositions and operating conditions. From this survey, electrolytes are suggested for selection to...
Topics: NASA Technical Reports Server (NTRS), COPPER, ELECTROFORMING, ELECTROLYTES, NICKEL,...
38
38
Nov 26, 2014
11/14
by
R. K. PATHAK 1 and PRIYANKA WAGELA 2
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We have successfully deposited nano structured Fe-Cu alloy inside anodic aluminum oxide (AAO) templates from aqueous electrolyte containing Iron sulfate, Copper sulphate and Boric acid by using electrochemical methods. polarization curves, electrochemical impedance spectroscopy(EIS), the corrosion behavior of the Iron-copper nanocomposite coatings were examined. The corrosion parameters determined from the polarization curves recorded in 0.5M NaCl solution at room temperature. The surface...
Topics: Electrodeposition, Electrochemical Inpedance spectroscopy (EIS), Corrosion rate (CR), Scanning...
Technical Objective: Develop an environmentally benign process, Electro-Spark Deposition (ESD), that can apply superior protective coatings to nonline- of-sight and inside diameter surfaces.
Topics: DTIC Archive, PACIFIC NORTHWEST NATIONAL LAB RICHLAND WA, *DETECTORS, *ELECTROPLATING, *PROTECTIVE...
In this project, we have fabricated arrays of nanomagnets and characterized them for use as patterned media for high-density magnetic storage and as magnonic crystals in the microwave range. The nanomagnet arrays have been formed by electrodeposition in templates with feature sizes in the sub-100nm range using an electrodeposition system bought as part of this project. We have modelled the dynamic switching of the magnetizations in these arrays, and also done preliminary microwave absorption...
Topics: DTIC Archive, INDIAN INST OF TECH NEW DELHI, *ELECTRODEPOSITION, *MAGNETIC MATERIALS, *NANOWIRES,...
A brief discussion on the electrodeposition of organic coatings is presented as the result of an extensive literature survey through recent technical journals and publications. The feasibility of the process for possible military usage was studied using a specific proprietary coating. Laboratory work on processing parameters indicated that electrodeposition would offer advantages for uniformly coating equipment with complex configurations which cannot be adequately coated by other application...
Topics: DTIC Archive, COATING AND CHEMICAL LAB ABERDEEN PROVING GROUND MD, *ELECTRODEPOSITION, *ORGANIC...
An electrodeposition method of applying thin polypolytetrafluoroethylene resin (''Teflon'') coatings has been develop which allows the application of crack-free films up to 0.001 in. thick in one coating operation. Polytetrafluoroethylene (TFE) coatings applied by this method are intended to supplement sprayed TFE coatings in lubricating, without the use of oils or greases, a wide variety of military equipment. Electro deposited TFE coatings possess a very low coefficient of friction on steel,...
Topics: DTIC Archive, Logan, Robert W, GENERAL PLASTICS CORP BLOOMFIELD NJ, *TETRAFLUOROETHYLENE RESINS,...
A thorough study of the role which foreign atoms play in cone formation during sputtering of metals revealed many experimental facts. Two types of cone formation were distinquished, deposit cones and seed cones. Twenty-six combinations of metals for seed cone formation were tested. The sputtering yield variations with composition for combinations which form seed cones were measured. It was demonstrated that whisker growth becomes a common occurrence when low melting point material is sputter...
Topics: NASA Technical Reports Server (NTRS), ELECTRON BOMBARDMENT, IONS, METALS, SPUTTERING, ATOMS, CONES,...
289
289
Jun 13, 2011
06/11
by
Edquist, Karl T.; Wright, Michael J.; Allen, Gary A., Jr
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Computational fluid dynamics predictions of Viking Lander 1 entry vehicle afterbody heating are compared to flight data. The analysis includes a derivation of heat flux from temperature data at two base cover locations, as well as a discussion of available reconstructed entry trajectories. Based on the raw temperature-time history data, convective heat flux is derived to be 0.63-1.10 W/sq cm for the aluminum base cover at the time of thermocouple failure. Peak heat flux at the fiberglass base...
Topics: CROSSLINKING, RADICALS, ELECTRODEPOSITION, TRANSMITTANCE, SOLUBILITY, ELECTRIC POTENTIAL,...
Topics: DTIC Archive, Taylor, D L, CORNELL UNIV ITHACA NY DEPT OF CHEMISTRY, *ELECTRODEPOSITION,...
Overview: Nanocrystalline Materials, History of the nCoP NLOS Cr-replacement Project, Overview of nCoP Process and Properties, Scale-up of Tank Process, Installation at Integran, Installation at NADEP-JAX, Dem/Val Activities, Development of Selective Area (Brush) Plating, Joint Test Protocol (JTP) Sample Prep and Testing, Thin Dense Chrome Development, Application-specific Testing, Smiths Aero, Messier Dowty, and Summary.
Topics: DTIC Archive, INTEGRAN TECHNOLOGIES USA INC PITTSBURGH PA, *ELECTRODEPOSITION, BRUSHES, COATINGS,...
Topics: DTIC Archive, ALUMIPLATE INC MINNEAPOLIS MN, *ALUMINUM, *COATINGS, *CORROSION RESISTANCE,...
We have (1) established an electrodeposition procedure for silver with bright finish, which is associated with better electrical and physical properties than non-bright finish, (2) increased silver adhesion strength to gallium arsenide substrates using a titanium adhesion layer, and (3) characterized hardness and electrical conductivity of plated silver before and after rapid thermal annealing to find the optimum annealing conditions. We have also established a deposition protocol for...
Topics: DTIC Archive, NEW MEXICO UNIV ALBUQUERQUE, *METAL MATRIX COMPOSITES, ADHESION, CARBON NANOTUBES,...
Topics: DTIC Archive, BURKARD INDUSTRIES CLINTON TOWNSHIP MI, *COATINGS, *CORROSION RESISTANCE, *MILITARY...
Two conductive screens located in the flow path of an electrophoresis sample separation apparatus are charged electrically. The sample is introduced between the screens, and the charge is sufficient to disperse and hold the samples across the screens. When the charge is terminated, the samples are uniformly distributed in the flow path. Additionally, a first separation by charged properties has been accomplished.
Topics: NASA Technical Reports Server (NTRS), ELECTRODEPOSITION, ELECTROPHORESIS, PARTICULATE SAMPLING,...
An alternative to the immersion process for the electrodeposition of chromium from aqueous solutions on the inside diameter (ID) of long tubes is described. The Vessel Plating Process eliminates the need for deep processing tanks, large volumes of solutions, and associated safety and environmental concerns. Vessel Plating allows the process to be monitored and controlled by computer thus increasing reliability, flexibility and quality. Elimination of the trivalent chromium accumulation normally...
Topics: NASA Technical Reports Server (NTRS), CHROMIUM, ELECTRODEPOSITION, PLATING, WATER RECLAMATION,...
The method of electroding was changed from transfer wheel to silk screening during the reporting period. The operation of the silk screen machine was evaluated and sample units were, and are being, made using the existing equipment. These units are being evaluated to check the performance of the different pieces of equipment.
Topics: DTIC Archive, Thompson, S H, AEROVOX CORP OLEAN NY HI-Q DIV, *CERAMIC CAPACITORS, PRODUCTION...
Work done during the past several months on high temperature ductility of electrodeposited nickel is summarized. Data are presented which show that earlier measurements made at NASA-Langley erred on the low side, that strain rate has a marked influence on high temperature ductility, and that codeposition of a small amount of manganese helps to improve high temperature ductility. Influences of a number of other factors on nickel properties were also investigated. They included plating solution...
Topics: NASA Technical Reports Server (NTRS), DUCTILITY, ELECTRODEPOSITION, NICKEL, CURRENT DENSITY, HIGH...
An experimental dual cell apparatus for the electrodeposition of alternating metal layers (binary systems) employing a rotating cathode is described. Microstructures of multi-layered systems of Ni-Cu and Ni-Fe are shown and some of their properties are discussed and evaluated. X-ray diffraction data on the behavior of the Ni Cu systems are given. Also shown is the multi-layered Ni-Cr microstructure.
Topics: DTIC Archive, Greco, V P, WATERVLIET ARSENAL NY, *ELECTRODEPOSITION, IRON, COPPER, NICKEL,...
Topics: DTIC Archive, NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD, *COATINGS,...
Topics: DTIC Archive, ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD, *ELECTRODEPOSITION, CHROMIUM,...
For the purpose of determining diffusion coefficients as required for electrodeposition studies and other applications, a diaphragm cell and an isothermal water bath were constructed. the calibration of the system is discussed. On the basis of three calibration runs on the diaphram cell, researchers concluded that the cell constant beta equals 0.12 cm -2 . Other calibration runs in progress should permit the cell constant to be determined with an accuracy of one percent.
Topics: NASA Technical Reports Server (NTRS), CALIBRATING, CATALYSTS, COATINGS, DIFFUSION COEFFICIENT,...
The utilization of a digital computer to augment electrodeposition/electroforming processes in which nonconducting shielding controls local cathodic current distribution is reported. The primary underlying philosophy of the physics of electrodeposition was presented. The technical approach taken to analytically simulate electrolytic tank variables was also included. A FORTRAN computer program has been developed and implemented. The program utilized finite element techniques and electrostatic...
Topics: NASA Technical Reports Server (NTRS), ELECTRODEPOSITION, ELECTROFORMING, SHIELDING, COMPUTER...
Two ionic liquids, EMI-AlCl4 and N1114-TFSI, that support both lithium and sodium deposition/dissolution were studied as potential electrolytes for lithium metal batteries. In both cases lithium's dendritic growth was suppressed by adding a small amount of sodium to a lithium electrolyte. This results in a co-deposition or alloying process that hinders dendrite growth. SEM images show a significant difference in morphology obtained by the addition of sodium. A smooth deposit was not enough for...
Topics: DTIC Archive, GEORGIA INST OF TECHNOLOGY ATLANTA GA SCHOOL OF CHEMICAL AND BIOMOLECULAR...
Steel specimens were laminar (discrete layers or bands) chromium plated and adhesion tested by the high speed rotor technique. Four different pretreatments of the steal prior to plating were evaluated as to their effect on the adhesion of the plate to the basis metal. Corrosion tests were performed on laminar and nonlaminar chromium plated specimens.
Topics: DTIC Archive, Doss, Jodie, ROCK ISLAND ARSENAL IL, *ADHESION, *CORROSION INHIBITION, *PLATING,...
To develop an environmentally benign advanced nanocrystalline based coating technology that: (1) Is compatible with conventional electroplating infrastructure; (2) Meets or exceed the performance of hard chrome; (3) Costs similar to or less than existing hard chrome processes; and (4) Will be applied to non-line-of-sight surfaces.
Topics: DTIC Archive, INTEGRAN TECHNOLOGIES USA INC PITTSBURGH PA, *COATINGS, *ELECTRODEPOSITION, CHROMIUM,...
An electron microscope including an electron source, a condenser lens having either a circular aperture for focusing a solid cone of electrons onto a specimen or an annular aperture for focusing a hollow cone of electrons onto the specimen, and an objective lens having an annular objective aperture, for focusing electrons passing through the specimen onto an image plane are described. The invention also entails a method of making the annular objective aperture using electron imaging,...
Topics: NASA Technical Reports Server (NTRS), APERTURES, ELECTRON MICROSCOPES, ELECTRON SOURCES, IMAGING...
