کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1585564 1514916 2006 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermal decomposition of silicon carbide in a plasma-sprayed Cu/SiC composite deposit
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Thermal decomposition of silicon carbide in a plasma-sprayed Cu/SiC composite deposit
چکیده انگلیسی
A functionally graded SiC/Cu metal matrix composite (MMC) produced by plasma spray has been studied. The phase constituents of Cu, Cu2O, CuO, Cu3Si, Si, and SiC in the plasma-sprayed deposits were analyzed by XRD. The SiC was decomposed into Si and C, and copper silicide was then formed. Most pores were found in the vicinity of SiC due to the decomposition of the SiC and thermal expansion mismatch between SiC and Cu during rapid solidification. From the thermodynamic consideration, the overall decomposition of SiC during plasma spray process occurs as follows: (1) SiC(s) = Si(s) + C(s); (2) SiC(s) + CO2(g) = Si(s, l) + 2CO(g) and SiC(s) + 2CO(g) = SiO2(s) + 3C(s); (3) SiO2(s) + CO(g) = Si(s, l) + 2CO2(g). Based on the analyses of the electron probe X-ray microscope analyzer (EPMA) and X-ray photoelectron spectroscopy (XPS), it was revealed that dissociated carbon was present in the deposits.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 428, Issues 1–2, 25 July 2006, Pages 336-345
نویسندگان
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