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Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China) Abstract: C/SiC composites were prepared by densification of bulk needled carbon fiber felts and SiC coating... of Inorganic Materials, 2005, 20(1): 251-256. [8] 邓 清. SiC反射镜材料制备研究 [D]. 长沙: 中南大学粉末冶金国家重点实验室, 2006.DENG Qing. The research on SiC materials for optic mirror[D]. Changsha: State Key Laboratory of Powder......
and uncoated SiC particles were investigated. 2 Experimental 2.1 Raw materials Al 2519 alloy powder with an average size of 75 μm and purity of 99.9% was produced by gas atomization with N2 (Bolangsida Materials, China). Chemical composition of the as-received Al 2519 alloy powder is listed in Table 1. Conventional abrasive grade α-SiC particles (Huarong Ceramics, China) with an average size of 14......
of copper-based powder metallurgy friction materials reinforced by SiC particleZHOU Hai-bin,YAO Ping-ping,XIAO Ye-long,ZHANG Zhong-yi, CHEN Ling-han,GONG Tai-min,ZHAO Lin,ZUO Xiao-ting(State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China)Abstract:The effects of SiC content on friction and wear properties,the microstructure evolution of friction surface and sub-surface......
composite powders consist of SiC and Al without any impurities. In addition, from the EDS mapping image shown in Fig.1(c), the SiC ceramic particles are well distributed in the Al powder matrix. In order to clarify the distribution of SiC particles in the Al matrix, a typical cross-sectional view of the SHS SiC-Al composite powders is shown in Fig.2. It can be seen that the SiC-Al composite powder......
composites [J]. Rare Metal Materials and Engineering, 2006, 35(1): 43-49. (in Chinese) [4] FU Yue-chun, SHI Nan-lin, ZHANG De-zhe, YANG Rue. Preparation of SiC/Ti composites by powder cloth technique [J... Effect of properties of SiC fibers on longitudinal tensile behavior of SiCf/Ti-6Al-4V composites LI Jian-kang(李建康), YANG Yan-qing(杨延清), YUAN Mei-ni(原梅妮), LUO Xian(罗 贤), LI Li-li(李丽丽) School......
, and both produced particles, SiC and ZrB2, distribute homogeneously in the powder mixtures. The mean sizes of SiC and ZrB2 particles in the powder mixture synthesized at 1200 ℃ are 40 nm and 300 nm, respectively. At 1400 ℃, the agglomeration phenomenon of the ceramic powder mixture appears due to the sintering at high temperature. Key words: ZrB2; SiC; boro-carbothermal reduction; ceramic powder......
A Method to Adjust Dielectric Property of SiC Powder in the GHz RangeXiaolei Su1), Jie Xu1), Zhimin Li2), Junbo Wang1), Xinhai He1), Chong Fu1) and Wancheng Zhou3) 1) College of Mechanical &..., Northwestern Polytechnical University, Xi an 710072, China摘 要:The SiC powders by Al or N doping have been synthesized by combustion synthesis, using Al powder......
for powder XRD to ascertain the phase of the composite felts. The phase analysis of the CF/SiC-NF was carried out using X-ray diffractometer (PANAlytical Company, Holland). 3 Results and discussion Fig.1... for Diffraction Data. Powder diffraction file, Card No.29-1129 [S]. Swarthmore, Pennyslvania, USA.. [15] ZHU Yao-can, OHTANI S, SATO Y, IWAMOTO N. The improvement in oxidation resistance of CVD-SiC......
materials, the SiC inner coating was prepared by pack cementation. The powder compositions were as follows: 70%-80% Si, 10%-20% graphite and 5%-15% Al2O3. Al2O3 was used as penetration enhancer...Trans. Nonferrous Met. Soc. China 23(2013) 2107-2112 Double SiC coating on carbon/carbon composites against oxidation by a two-step method Can SUN, He-jun LI, Qian-gang FU, Jia-ping ZHANG, Han PENG......
and powder metallurgy was proposed. 2) The microstructure of the ceramic matrix composites prepared by this technology with Al/SiC is homogeneous, the hardness is high and the tensile strength is high...]Schiavon M A, Radovanovic E, Yoshida I V P. Microstructural characterization of monolithic ceramic matrix composites from polysiloxane and SiC powder [J]. Powder Technology, 2002, 123(6): 232-241. [19......
