3139

3107

كارشناسي ارشد

﴿شناسايي و انتخاب مواد﴾

اصفهان، دانشگاه صنعتي اصفهان، دانشكده مواد

1385

نه، 91، [I]ص.: مصور، جدول، شكل، نمودار

ص. ع. به فارسي و انگليسي

محمود منير واقفي، كيوان رئيسي

احمد ساعتچي

حسين ادريس، حشمت اله دهكردي

1396/02/31

كتابنامه

مواد

مهندسي مواد

ID3107

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

AbstractThe aim of this research is the optimization of Ni P Electroless Plating on Al7075 alloysby the heattreatment The influence of various factors such as heattreatment time antemperature thickness of coatings preparing conditions sand blasting and Zn intermediatelayer on engineering properties of coatings were evaluated e g adhesion wear resistance load ability crystallinity of coatings For analyzing of results various equipments such asSEM XRD EDAX optical microscope micro hardness was used For wear study Pin ondisk procedure was applied The results showed that although at high heattreatmenttemperatures the hardness was increased but to achieve appropriate adhesion betweencoating and substrate the range of 300 oC is suitable Heat treated specimens at 300 oC for9 hours showed that the optimum adhesion and wear resistance Adhesion tests onspecimens with various preparing conditions showed that sand blasting and Znintermediate layer increased the adhesion Studies on Ni P electroless coatings in variousthickness showed that the optimum thickness to approach the best adhesion and wearresistance was about 50 Micron Heattreatment at 150 200 250 and 300 oC for 1 hourdidn t show any crystalline structure but at 300 oC for 9 and 16 hours Ni3P crystals wereformed At 350 400 450 and 500 oC for 1 hour the amount of crystalline phase wasincreased The studies on X ray patterns showed that the grain size of crystalline structurewas about 30 nanometers

محمود منير واقفي، كيوان رئيسي

احمد ساعتچي

حسين ادريس، حشمت اله دهكردي