碳/碳复合材料钎焊连接概况  

Overview of the Brazing of Carbon-Carbon Composites

作　　者：龙伟民[1,2] 李胜男 沈元勋[2] 都东 钟素娟 王琦[2] 张雷 Long Weimin;Li Shengnan;Shen Yuanxun;Du Dong;Zhong Sujuan;Wang Qi;Zhang Lei(Tsinghua University,Beijing 100084,China;State Key Laboratory of Advanced Brazing Filler Metals&Technology,Zhengzhou Research Institute of Mechanical Engineering Co.Ltd,Zhengzhou 450001,China)

机构地区：[1]清华大学,北京100084 [2]郑州机械研究所有限公司新型钎焊材料与技术国家重点实验室,河南郑州450001

出　　处：《稀有金属材料与工程》2020年第8期2683-2690,共8页Rare Metal Materials and Engineering

基　　金：International S&T Cooperation Program of China(2016YFE0201300)。

摘　　要：碳/碳复合材料单独使用受到一定的限制,与其它材料的连接成为其应用的一大关键技术。钎焊是近几十年内,研究最多、最成熟、应用最广泛的一种C/C复合材料与金属的连接方法。由于材料本身的特性,C/C复合材料的钎焊仍存在很多的不足,不能满足特定条件下的使用需求。本文综述了C/C复合材料的钎焊连接概况。包括C/C复合材料与金属材料钎焊的连接难点、已研究的连接体系和接头连接机理。重点归纳了C/C复合材料的钎焊方法和基本原理,主要包括:采用活性金属钎料直接钎焊;采用微纳颗粒增强复合钎料或添加应力缓冲层复合材料;对C/C复合材料进行表面改性处理;及改变界面结构等方面。分析了目前研究已经取得的突破进展及仍然存在的问题,并分析和总结了C/C复合材料钎焊的可行性措施,对后续C/C复合材料钎焊的研究及连接性能的提高作出基础性参考。Since the individual use of C/C composite is limited,the joining with other materials becomes a key technology in its application.Brazing is one kind of joining methods that has been studied most,most mature and most widely used for C/C composite in recent decades.Nonetheless,there are still many deficiencies in the brazing of C/C composite because of the characteristic of the composite itself,which cannot meet the needs of specific conditions.The current brazing situation of C/C composite is reviewed in this paper.The difficulties of joining C/C composites and metals,the bonding systems that has been studied,and the joining mechanisms are included.The brazing methods and basic joining mechanisms of C/C composites are summarized emphatically,mainly including:direct brazing with active filler materials,using micro-nano particles reinforced or stress buffer layer added composite filler materials,surface modifying of C/C composite,changing the interface structure,and so on.The current research breakthroughs and remaining problems are analyzed.The feasibility measures of brazing C/C composite are analyzed and summarized to provide basic reference for subsequent research on the brazing of C/C composite and the improvement of joint performance.

关 键 词：碳/碳复合材料 钎焊方法和机理 界面结构 复合钎焊材料 

分 类 号：TB332[一般工业技术—材料科学与工程]