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CVD法制备SiC先进陶瓷材料研究进展 刘荣军1,周新贵1,曹英斌1,张长瑞1 (1.国防科技大学航天与材料工程学院国防科技重点实验室,长沙,410073) 摘要:SiC陶瓷材料具有许多优异的性能如高比强度,高比模量,低密度,高硬度,高导热系数,低的热膨胀系数,耐腐蚀,抗氧化等,从而被广泛用作高温结构部件.CVD 工艺灵活,制备的SiC陶瓷具有很高纯度和致密度,因而是制备先进SiC陶瓷的最有希望的工艺之一.对CVD法制备SiC涂层和SiC基复合材料的研究及应用进行了综述. 关键词:CVD; SiC先进陶瓷; 进展; [全文内容正在添加中] ......
with infiltrating Si , but pyrolytic carbon of on outer surface of the carbon fiber(Cf) reacts with infiltrating Si, leading to some pyrolytic carbon between Cf and SiC which protects Cf. The amount... of carbon fiber-reinforced SiC composites[J]. Aerospace Materials & Technology, 1999, 29(3): 10-14. [3] Yoshida K, Budiyanto P. Processing and microstructure of silicon carbide composite by hot......
double linear strain distribution assumption of RC beam strengthened with external-bonded or near-surface mounted fiber reinforced plasticRen Zhen-hua (任振华) 1, Liu Han-long (刘汉龙) 1, Zhou feng-jun (周丰... of the Headquarters of the General Staff, Beijing 100850, China)Abstract:Rehabilitation of existing structures with fiber reinforced plastic (FRP) has been growing in popularity because they offer superior......
Fusion Splicing Experiments of 1060-XP Silica Fiber with Phosphate Glass Fiber杨昌盛,杨中民摘 要:<正>An asymmetric heating method for fusion splicing of 1060-XP silica fiber (1060F) and phosphate glass fiber (PGF) using an electric arc splicer has been proposed.Double joints with the lowest splice loss of 0.6 dB and good bending-resist strength between......
; accepted 21 January 2017 Abstract: Taguchi technique was used to predict the influence of processing parameters on the erosive wear behavior Al7034-T6 composite reinforced with SiC and Al2O3 particles... velocity respectively compared to other factors. This also shows the significant wear resistance with the increase in the filler contents of SiC and Al2O3 particles, respectively. Key words: hybrid metal......
镁合金表面Ni-P-纳米SiC复合化学镀层的耐腐蚀性能曾兵,戈晓岚,陈志超江苏大学机械工程学院摘 要:为了提高AZ91D镁合金的应用性能,将纳米SiC引入Ni-P镀液,采用化学镀的方法制备了Ni-P-纳米SiC复合镀层,研究了Ni-P-纳米SiC镀层的孔隙率,盐雾性能以及阳极极化曲线,并与Ni-P化学镀层的耐蚀性进行了对比.结果表明:Ni-P-纳米SiC镀层均匀,致密,纳米SiC在镀层表面呈弥散分布;当纳米SiC浓度为4g/L时,复合镀层的孔隙率最小,为1个/cm,耐蚀时间(90h)明显长于Ni-P镀层(60h),腐蚀电位为-0.58V,略高于Ni-P镀层(-0.59V).关键词:直接化学镀;AZ91D镁合金;纳米SiC颗粒;Ni-P-纳米SiC复合镀层;耐蚀性;......
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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... resistance of C/C composites, a double SiC protective coating was prepared by a two-step technique. Firstly, the inner SiC layer was prepared by a pack cementation technique, and then an outer uniform......
SiC的光谱特性研究 梁骏吾1,宠海1,朱建军1,刘素英1 (1.中国科学院半导体研究所,北京,100083) 摘要:综合分析了3C-SiC,4H-SiC和6H-SiC的光致发光谱,总结了它们的光谱特性,特别分析了SiC结构中的不等价晶位对SiC的光致光谱的影响. 关键词:SiC; 不等价晶位; 光致发光谱; 4A(4D)复合体; [全文内容正在添加中] ......
Trans. Nonferrous Met. Soc. China 22(2012) 2813-2821 Removal of SiC particles from solar grade silicon melts by imposition of high frequency magnetic field Mehdi KADKHODABEIGI1, Jafar SAFARIAN1... in the feedstock affect the electrical and mechanical properties of high quality silicon which is used in critical applications such as photovoltaic solar cells and electronic devices. SiC particles......
