نتایج جستجو برای: electroplated coating
تعداد نتایج: 37677 فیلتر نتایج به سال:
آبکاری الکترولس به عنوان یک فرآیند بسیار مناسب در مهندسی سطح محسوب می شود. از زمان کشف آبکاری الکترولس توسط برنر (brenner) و ریدل (riddell) در سال 1944، پوشش های الکترولس نیکل - فسفر کاربردهای گسترده ای در صنایع مهندسی پیدا کرده است که این به دلیل هزینه پایین آن، سهولت کنترل شرایط انجام آن و بدست آوردن ویژگی های بسیار مطلوب از جمله سختی بالا، مقاومت در برابر خوردگی و مقاومت در برابر سایش مناس...
Zinc electroplating was used to enhance corrosion resistance of porous metal injection molded 440C stainless steel. Controlled porosity achieved by the powder space holder technique and using sodium chloride as a material. The internal pore structure deposited zinc with three different electrolytes acetate, sulfate, chloride. Our results show that all depositions on samples significantly improv...
In the present article doping of aluminide coatings by Pt/Pd as well Hf or Pd using industrial processes was developed. The different combinations elements were tested their influence on chemical composition initially investigated. Pt and both + electroplated surface MAR M247 nickel superalloy. Zr doped during low activity CVD aluminizing process Bernex BPX Pro 325S system. conducted research s...
The Young’s modulus of an electroplated nickel (Ni) thin film suitable for microelectromechanical applications has been investigated as a function of process variables: the plating temperature and current density. It was found that the Young’s modulus is approximately 205 GPa at plating temperatures less than 60 jC, close to that of bulk Ni, but drastically drops to approximately 100 GPa at 80 ...
The spindle is the key working part of horizontal cotton picker, and wear resistance its surface directly affects service life spindle. Improving performance fundamental for improving pickers. To enhance surface, this study used physical vapor deposition (PVD) technique to prepare TiN coating on substrate cotton-picking machine improve rather than original electroplated chromium coating. micros...
Acrylonitrile-butadiene-styrene (ABS plastic) is one of the most widely used thermoplastic resins for electroplating. In electroplating, a glossing metallic layer coated on ABS plastic surface. Yet, electroplated coating has poor adhesion to plastics. Thus, polymer producers strive develop more adhesive electroplating grades plastic. Unfortunately, there no reliable method quantify chemistry-in...
In this research, electroplated magnetically isotropic and anisotropic soft alloys and screen-printed soft ferrites applicable to micromachined micromagnetic devices are fabricated and characterized using in situ measurement techniques. Appropriate magnetic materials and deposition methods, such as electroplating and screen-printing techniques, are examined and material test structures are fabr...
Coated tools have improved the performance of both traditional and nontraditional machining processes and have resulted in higher material removal, better surface finish, and increased wear resistance. However, a study on the performance of coated tools in micromachining has not yet been adequately conducted. One possible reason is the difficulties associated with the preparation of coated micr...
Here, we report a nanopipette-based electrochemical approach to prepare metal nanoelectrodes with excellent control over electrode size, shape, and thickness of the insulation wall. Nanoelectrodes are prepared by electrochemical plating in a laser-pulled quartz nanopipette tip immersed in a liquid gallium/indium alloy electrode, which not only protects the ultrasmall quartz tip but also starts ...
Hybrid microcircuit packages are multicomponent electronics devices used in high tech military equipment. They also find application in medical devices for implant in humans to abort the attack of many life threatening illnesses. These are electroplated with limited thicknesses of nickel (1.25 8.75pm) and gold (1.25 5.6pm). In addition there are post plate baking and steam aging requirements as...
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