electroless Ni-P coating
Effect of Zincate Treatment on Adhesion of Electroless Ni P Coating onto Various Aluminum Alloys
... the electroless Ni-P coating on aluminum alloy substrate can be remarkably improved by introducing the double zincate treatment as a pretreatment ...of electroless Ni-P ...
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Effect of Zincating bath additives on structural and electrochemical properties of electroless Ni-P coating on AA6061
... of coating on aluminum surface with general electroless and electrodeposition is very difficult because of the presence of a strong and chemically stable surface oxide ...This coating preserve the ...
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Preparation and Corrosion Resistance of Electroless Ni-P Coating on Open-Cell Aluminum Foams
... The electroless Ni-P coatings were deposited on open-cell aluminum foams substrate by using hypophosphite as a reducing ...agent. Ni-strike was developed as a pre-treatment for ...
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STUDY OF THE EFFECT OF THE ELECTROLESS Ni-P COATING THICKNESS APPLIED ON AW-7075 ALUMINUM ALLOY ON ITS MECHANICAL PROPERTIES
... The coating thicknesses have been selected considering their internal stresses because, the in- crease of thickness results in the increase of ten- sile stress which is detrimental and significantly reduce ...
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The Deposition Process and the Properties of Direct Electroless Nickel-Phosphorous Coating with Chromium-Free Phosphate Pickling Pretreatment on AZ31 Magnesium Alloy
... The corrosion resistance of magnesium alloy with or without electroless Ni-P coating was investigated by potentiodynamic polarization methods in 3.5 wt.% NaCl solutions at room temperature, ...
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Susceptibility to Stress Corrosion Cracking and Electrochemical Behavior of Electroless Ni-P /nano-TiO2 Composite Coatings on 70-30 Brass in Fluoride Solutions
... the electroless Ni-P ...the Ni-P coating is a smooth and the structure is dense with very small spherical nodular ...the Ni-P coating, the smooth ...
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INFLUENCE OF ELECTROLESS NICKEL-PHOSPHORUS DEPOSITION ON HARDNESS OF MILD STEEL AND AZ91 MAGNESIUM ALLOY
... Electroless Ni-P coating alloy is well established surface engineering process that involves deposition of a metal alloy coating on various ...
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Comparative Corrosion Resistance of Electroless Ni-P/nano-TiO2 and Ni-P/nano-CNT Composite Coatings on 5083 Aluminum Alloy
... the electroless Ni-P coating provides good corrosion protection for the 5083 substrate, it produced localized broken corrosion voids after 72 h immersion ...the Ni-P/TiO ...
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Improvements in Wear and Corrosion Resistance of RB400 Anchor Rod Steel by Electroless Ni-P Plating
... The electroless plating technique can be applied on different substrates as steel, aluminum alloy, magnesium alloy, copper, ceramics, carbon nanotube (CNT) and hydrophobic polymer ...the electroless plating ...
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Computation and optimisation of electroless Ni Cu P coating using evolutionary algorithms
... in electroless Ni-P coating to minimize friction (Xianguo Hu et ...The P content of the electroless Ni–P deposits increased with the rise of the bath temperature ...
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Optimization of wear behavior of electroless Ni-P-W coating under dry and lubricated conditions using genetic algorithm (GA)
... of Ni-P-W coating under dry and lubricated ...The coating is deposited onto mild steel (AISI 1040) specimens by the electroless method using a sodium hypophosphite based alkaline ...
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Effects of Plating Conditions on Electroless Ni Co P Coating Prepared from Lactate Citrate Ammonia Solution
... (toward Ni/ Co-ammonia complex peak) and were for Ni/Co-citrate- ammonia ...for Ni in acid region while in alkaline region both peak shift and intensity change were identi fi ed showing that the ...
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Elaboration by electroless and characterization of Ni Sn P alloy
... Thus, we gradually changed the stannous ion concentration to incorporate tin in the alloy. The pH is adjusted to 5 by adding acetic acid and the operating temperature is set at 85 ± 2 ° C. Indeed, the analysis by EDX ...
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Ni-P-TiO2 Composite Coatings on Copper Produced by Sol-Enhanced Electroplating
... the electroless plating process, electroplating process shows a broader application prospect for it is easy to operate and the deposition rate can be controlled by adjusting the voltage or current ...
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Influence of Hypophosphite on Efficiency and Coating Qualities of Electroless Ni-P Deposits on Magnesium Alloy AZ91D
... There are many influence factors in electroless Ni-P plating, such as pretreatment which have important impact on coatings properties, bath composition and operation conditions. In this paper, we ...
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Biocorrosion Control of Electroless Ni-Zn-P Coating Based on Carbon Steel by the Pseudomonas aeruginosa Biofilm
... of Ni-Zn-P in sterile medium ...of Ni-Zn-P in medium containing ...on Ni-Zn-P in medium containing ...zinc coating Ni--P alloy, which can improve the surface ...
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A THEORETICAL APPROACH TO OPTIMIZE THE BATH PARAMETERS OF ELECTROLESS Ni-Co-P COATING ON THE RESPONSE OF SURFACE ROUGHNESS
... roughness. The concentration of Cobalt Sulphate and the concentration of the reducing agent Sodium Hypophosphite was been the significant factors in determining the surface roughness of the coating which has been ...
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Prediction and Supplementation of Reducing Agent to Improve the Coating Efficiency and Wear Behavior of Electroless Ni-P Plating
... work, electroless coating was done on mild steel ...the coating efficiency, surface structure, phosphorous content in the deposit, wear, adhesion and corrosion behaviour were ...the coating ...
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Preparation and Properties of an Electroless Triple-Layered Ni- P Based-TiO2/ZrO2 Composite Coating
... the electroless plating method has got better mechanical and anticorrosion properties with uniform and well-connected triple-layer ...layered coating is relatively complex, which requires electroless ...
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Effect of Surfactant on the Electroless Ni-P/Ni-B Duplex Coatings on Aluminium 7075
... 500°C, electroless alloy/composite coatings can be applied for high operating temperatures based applications ...[14]. Ni–P coatings on aluminium-based alloys may be prepared using various ...of ...
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