کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1636481 1516952 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermal stability of electrodeposited nanocrystalline nickel assisted by flexible friction
ترجمه فارسی عنوان
پایداری حرارتی نیکل نانوکریستیک الکترودهایی با کمک اصطکاک انعطاف پذیر
کلمات کلیدی
الکترود نیکل نانوکریستالیک، اصطکاک انعطاف پذیر، پایداری حرارتی، رشد دانه،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
چکیده انگلیسی
Nanocrystalline nickel coating was prepared by flexible friction assisted electrodeposition technology in an additive-free Watts bath. The coating consists of massive equiaxial crystals with an average grain size of about 24 nm and exhibits a (111) preferred orientation. The differential scanning calorimetry (DSC) analysis of nanocrystalline nickel demonstrates that the peak temperature of rapid grain growth is about 285.4 °C, and the peak temperature of grain growth towards equilibrium is around 431.5 °C. The isochronous annealing results reveal that abnormal grain growth behavior is not observed in nanocrystalline nickel without sulfur-containing. The thermal stability of the deposition was improved due to its initial microstructure of the as-deposited nickel and a certain amount of annealing nano-twins with low-energy, which reduces the driving force for grain growth. Consequently, the coating shows a low residual tensile stress of about 50 MPa and a high microhardness of HV 400 at the annealing temperature of 450 °C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 25, Issue 10, October 2015, Pages 3297-3304
نویسندگان
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