کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7898102 | 1510132 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Transparent highly oriented 3C-SiC bulks by halide laser CVD
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Transparent and highly oriented 3C-SiC bulks were speedily fabricated at deposition temperature (Tdep) of 1623â¯K by halide laser chemical vapor deposition (HLCVD). The effect of total pressure (Ptot) on the optical transmittance, preferred orientation, microstructure, deposition rate (Rdep) and micro-hardness were investigated. The maximum Rdep of the transparent 3C-SiC reached 2450â¯Î¼m/h at Ptotâ¯=â¯10â¯kPa. With an increase in Ptot, the transmittance of 3C-SiC bulks increased firstly, and then decreased. At Ptotâ¯=â¯10â¯kPa, 3C-SiC bulk, a highly <111>-oriented and low density of defects, showed the highest transmittance, greater than 55% in the wavelength range of 800-1100â¯nm. At Ptotâ¯=â¯4â¯kPa and 20â¯kPa, 3C-SiC bulks showed much lower transmittance, in which contained poorly oriented grains and numerous defects. The Vickers micro-hardness of 3C-SiC bulks increased with increasing Ptot and showed the highest value of 34.8â¯GPa at Ptotâ¯=â¯40â¯kPa.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 38, Issue 9, August 2018, Pages 3057-3063
Journal: Journal of the European Ceramic Society - Volume 38, Issue 9, August 2018, Pages 3057-3063
نویسندگان
Hong Cheng, Meijun Yang, Youfeng Lai, Mingwei Hu, Qizhong Li, Rong Tu, Song Zhang, Mingxu Han, Takashi Goto, Lianmeng Zhang,