| 含钇聚碳硅烷制备碳化硅纤维(英文) |
| |
| 引用本文： | 杨大祥,宋永才,余煜玺,赵晓峰,肖平.含钇聚碳硅烷制备碳化硅纤维(英文)[J].中国有色金属学会会刊,2012,22(4):879-886. |
| |
| 作者姓名： | 杨大祥 宋永才 余煜玺 赵晓峰 肖平 |
| |
| 作者单位： | 装甲兵工程学院再制造技术重点实验室;国防科技大学陶瓷纤维及其复合材料重点实验室;厦门大学材料学院材料科学与工程系,福建省防火阻燃材料重点实验室;曼彻施特大学材料科学中心 |
| |
| 基金项目： | Projects (51175444,50532010) supported by the National Natural Science Foundation of China;Project (2011121002) supported by the Fundamental Research Funds for the Central Universities, China;Project (2009J1009) supported by Scientific and Technological Innovation Platform of Fujian Province,China |
| |
| 摘 要： | 将钇元素作为烧结助剂引入到聚碳硅烷(PCS)中制备含钇PCS。由含钇PCS制成SiC(OY)和SiC(Y)2种碳化硅纤维。对SiC(OY)纤维转变成SiC(Y)纤维的结构与相关特性的变化进行研究。SiC(OY)纤维的化学组成为SiC1.23O0.05Y0.005,纤维是无定型结构;SiC(Y)纤维含有大量的直径为50nm的β-SiC晶粒和少量的α-SiC晶粒,钇元素存在于SiC晶粒之间。SiC(OY)的拉伸强度为2.25GPa,断裂韧性为2.37MPa.m1/2;SiC(Y)的拉伸强度为1.61GPa,断裂韧性为1.91MPa.m1/2;SiC(Y)纤维比SiC(OY)纤维具有更好的热稳定性。
|
| 关 键 词： | 聚碳硅烷 钇 碳化硅 纤维 |
| 收稿时间： | 29 April 2011 |
Fabrication of SiC fibres from yttrium-containing polycarbosilane |
| |
| YANG Da-xiang,SONG Yong-cai,YU Yu-xi,ZHAO Xiao-feng,XIAO Ping.Fabrication of SiC fibres from yttrium-containing polycarbosilane[J].Transactions of Nonferrous Metals Society of China,2012,22(4):879-886. |
| |
| Authors: | YANG Da-xiang SONG Yong-cai YU Yu-xi ZHAO Xiao-feng XIAO Ping |
| |
| Affiliation: | 1.Science and Technology on Remanufacturing Laboratory,Academy of Armored Forces Engineering,Beijing 100072,China;2.Key Laboratory of Advanced Ceramic Fibers and Composite,National University of Defense Technology,Changsha 410073,China;3.Key Laboratory of Fire Retardant Materials of Fujian Province,Department of Materials Science and Engineering,College of Materials,Xiamen University,Xiamen 361005,China;4.Materials Science Center,University of Manchester,Manchester M17HS,UK |
| |
| Abstract: | The yttrium as a sintering aid was introduced into polycarbosilane(PCS) to prepare yttrium-containing PCS(PYCS).Two types of yttrium-containing SiC fibres,the SiC(OY) fibres and the SiC(Y) fibres,were fabricated with PYCS.The structural evolution and the associated properties on changing from SiC(OY) to SiC(Y) fibres during the sintering process were studied.The chemical composition of the SiC(OY) fibres is SiC1.53O0.22Y0.005 with an amorphous structure.The composition of SiC(Y) fibres is SiC1.23O0.05Y0.005.The fibres are composed of a large number of β-SiC crystallites with a size of 50 nm and a small amount of α-SiC crystalline.The tensile strength and fracture toughness of the SiC(OY) fibres are 2.25 GPa and 2.37 MPa·m1/2,respectively,and 1.61 GPa,1.91 MPa·m1/2,respectively for SiC(Y) fibres.The SiC(Y) fibres have a higher thermal stability than the SiC(OY) fibres. |
| |
| Keywords: | polycarbosilane yttrium silicon carbide fibre |
| 本文献已被 CNKI ScienceDirect 等数据库收录！ |
|
