基于离心纺丝技术制备稳定的碳化锆纤维  

Stable Zirconium Carbide Fibers Fabricated by Centrifugal Spinning Technique

作　　者：陈博文 王敬晓 姜佑霖 周海军[1,2] 廖春景[1,2] 张翔宇[1,2] 阚艳梅[1,2] 倪德伟[1,2] CHEN Bowen;WANG Jingxiao;JIANG Youlin;ZHOU Haijun;LIAO Chunjing;ZHANG Xiangyu;KAN Yanmei;NI Dewei(State Key Laboratory of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China;Structural Ceramics and Composites Engineering Research Center,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院上海硅酸盐研究所高性能和超微结构国家重点实验室,上海200050 [2]中国科学院上海硅酸盐研究所结构陶瓷与复合材料工程研究中心,上海200050 [3]中国科学院大学,北京100049

出　　处：《无机材料学报》2020年第12期1385-1390,共6页Journal of Inorganic Materials

基　　金：The National Key Research and Development Program of China(2016YFB0700202);National Natural Science Foundation of China(51702341);Chinese Academy of Sciences Innovative Funding(CXJJ-17-M169);The Key Deployment Project of Chinese Academy of Sciences(Y71YZ7171G);“CAS Pioneer Hundred Talents Program”。

摘　　要：本研究提出了一种利用离心纺丝技术制备稳定碳化锆(ZrC)纤维的有效方法。此方法使用醋酸锆和蔗糖作为锆源和碳源,聚乙烯吡咯烷酮(PVP)作为纺丝助剂,经过1600℃的裂解与碳热还原热处理后,所纺原丝转化成由均匀纳米ZrC晶体组成的ZrC纤维。研究结果表明,纤维中残留的少量碳可助力ZrC纤维在2000℃的超高温环境下仍保持较好的结构稳定性。In this work,an efficient approach was presented to produce stable zirconium carbide(ZrC)fibers by centrifugal spinning technique.Zirconium acetate and sucrose were used as the zirconium source and carbon source respectively.And polyvinyl pyrrolidone(PVP)was used as the spinning aid.After pyrolysis and carbothermal reduction at 1600℃,the as-spun green fibers can be converted to homogeneous ZrC fibers composed of uniform nano-sized ZrC crystals.Moreover,it is revealed that the as-fabricated ZrC fibers can sustain superior microstructure stability at an ultra-high temperature up to 2000℃,benefiting from a limited amount of residual carbon.The reaction mechanisms and the resulted ZrC fibers were also investigated.

关 键 词：ZrC纤维 离心纺丝 超高温稳定性 

分 类 号：TQ174[化学工程—陶瓷工业]