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A composite brush plated coating with application in the die industries

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It was demonstrated from practical experience that a nickel-cobalt-zirconia composite coating showed greater wear resistance than Ni-Co coatings, uncoated 45 steel and hard chromium coatings.

A composite coating for corrosion protection of AM60B magnesium alloy.

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SURF Oxide films have been produced on AM60B magnesium alloy by micro-arc anodic oxidation in an environmentally friendly alkaline solution, with and without addition of nanoparticles (TiO2, ZrO2 and Al2O3). Because of the anodic oxide porosity, inherent in the sparking process, organo-functional silanes top coat has been applied to seal pores and cracks, and achieve an efficient protective coating system. The surface and cross-section morphology of samples were analyzed by Scanning Electron Microscopy (SEM) coupled with Energy Dispersive Spectroscopy (EDS). Scratch tests were performed for evaluating the adhesion strength and scratch hardness of the anodic oxides to the AM60B substrate. The corrosion resistance of both anodic oxides and oxide/silane composite coatings was evaluated in 0.6 M NaCl solution using potentiodynamic polarization tests. The addition of nanoparticles to the anodizing solution doesn't affect significantly the corrosion resistance in comparison with anodic oxides produced in nanoparticles free solutions. Conversely, the adhesion strength and scratch hardness of the anodic oxides to the substrate is quite scattered, and it is higher for the samples produced in ZrO2 and in Al2O3 rich solutions. For this reason specimens anodized in ZrO2 and Al2O3 containing solutions were chosen for silane deposition. Two silanes were used, namely octyltrimethoxysilane (OSi) and 1, 2-bis [triethoxysilyl] ethane (BTSE). The anodizing treatment carried out in oxides nanoparticles containing solutions (ZrO2 or Al2O3), followed by a silane top coat treatment performed using OSi precursor, is an interesting way, suitable for industrial applications, to synthesize adherent corrosion resistant coatings on magnesium alloy AM60B in a short process time.

A composite overlay compound.

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A method of forming a composite overlay compound on a substrate includes forming a mixture including at least one component from a first group of component materials including titanium, chromium, tungsten, vanadium, niobium, and molybdenum. The mixture also includes at least one component from a second group of component materials including carbon and boron, and the mixture further includes at least one component from a third group of component materials including silicon, nickel, and manganese. The mixture of selected component materials is then applied to a substrate material to form an overlay compound on the substrate material. The overlay compound is fused to the substrate to form a metallurgical bond between the substrate material and the overlay compound.

A Comprehensive Investigation on the Electrophoretic Deposition (EPD) of Nano-Al/Ni Energetic Composite Coatings for the Combustion Application.

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SURF Nano-Al/Ni energetic composite coatings (ANECCs) have been successfully fabricated by electrophoretic deposition (EPD) method at the room temperature and normal pressure. Isopropyl alcohol is demonstrated to act as the suitable dispersion agent for the EPD. The SEM and EDS results show that the obtained ANECCs are relatively smooth and evenly distributed. Both the phase constitution and exothermic behavior of the ANECCs are characterized by X-ray diffraction (XRD) and differential scanning calorimetry (DSC) analysis at the same while. In addition, the kinetics of the nanoparticles during the EPD process are investigated in detail. The exothermic performance of products studies show that the ANECCs prepared by EPD exhibit the great combustion performance and thermodynamic properties. Furthermore, the combustion processes of samples are recorded and analyzed by the high-speed photography. This work demonstrates that EPD method is a facile and effective approach in the preparation of Al/Ni energetic coatings with the widespread application.

A comprehensive optimization of InAlAs molecular beam epitaxy for InGaAs/InAlAs HEMT technology.

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Effects of substrate temp. in molecular beam epitaxy growth of In0.52Al0.48As on (001)InP have been investigated. Strong dependence of structural, electrical, and optical properties of InAlAs films on growth temp. was found and opt. material can be grown at 530°C. Low substrate temps. deteriorate material quality due to insufficient growth kinetics, while higher temps. allow formation of composition inhomogeneities which also deteriorate structural, optical, and electrical characteristics of In0.52Al0.48As. Using In0.52Al0.48As buffers grown at 530°C, state-of-the-art In(x)Ga(1-x) As/In0.48As high electron mobility transistors were fabricated and showed reduced output conductance and no kink effect in I(V) characteristics.

A Computer Database for the Identification of Defects in Anodic Coatings on Aluminium

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A commercial database ("Squarenote") is used to list defects occurring in anodising & colouring of Al, in terms of the material itself and each consecutive stage - etching, cleaning, bright dipping, anodising, colouring etc. Detailed examples - possibly the entire database contents - are reproduced.

A Computer in a Finishing Shop?-What a Novel Idea

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A Computer Program in Turbo Pascal Based on Faraday's Laws for Electroplaters

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Full listing is given for program which inputs c.d, efficiency, metal deposited, time and thickness or expresses these in terms of the others.

A Consumer Speaks on Rectifiers

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Disc'n of the various types of rectifier, their characteristics and the control options need and available. No refs.

A contact angle measurement by laser glancing incidence method

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Technique to determine a contact angle by laser glancing incidence method, based on analyzing the reflection pattern from the up curved liquid surface around a smooth flat plate. A glass slide is vertically dipped into a tested liquid. Due to the wetting effect, meniscus is formed around the glass slide. When an expanded and collimated laser beam impinges on the surface at glancing incidence, steady and visible strip-shape dark area reflection patterns are observed. The relation of the dark region width and the maximal height of the UCLS is derived theoretically. The contact angles of distilled water and kerosene on the glass slides are calculated directly by utilizing the dark area width of the reflection patterns. Results show that an effective and practical technique for measuring the contact angle of a Wilhelmy plate is found.

A Continuous Electroforming Process to Form a Strip for Battery electrodes and a mandrel to be used in said electroforming process

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A Continuous Flow Caustic Etch Regeneration Process

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A continuous long-life electroless nickel process with EDEN (electrodialysis for electroless nickel) system.

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A Contribution to solvent recovery

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A controllable method for preparation of electroless nickel boron films on a silver substrate

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A parametric study of the deposition rate in alkaline electroless nickel solution. Table shows deposition rate as function of KBH4 concentration. Tables show effects of other variables such as nickel chloride, EDA and NaOH concentrations. XRD pattern of deposits from various electrolytes are shown. Results are analysed in terms of Orthogonal Design of Experiments (DOE) statistical approach. X-ray diffraction and thermal analysis (DSC) are used to study phase transformations in the deposits and Raman studies were also carried out. 18 refs