摘要
采用BNi68Cr WB粉末作为连接材料,利用真空钎焊工艺成功制备了C/C复合材料与镍基高温合金(GH600)的连接试样。并借助扫描电子显微镜和材料万能试验机,研究钎焊接头微观组织结构和室温及高温(700℃)下的抗剪切性能。结果表明,使用BNi68Cr WB粉末可以实现C/C与GH600的钎焊连接,接头的断裂位置为C/C复合材料母材;与室温条件相比,钎焊接头在700℃下的抗剪强度较低。
Joining samples of carbon/carbon composites （GI-I600） were fabricated by vacuum brazing with the powder （C/C composites） and Ni based high temperature alloy of BNi68CrWB as the interlayer material. The mechani- cal properties and microstructure of the joints between C/C composite and GH600 were investigated by scanning elec- tron microscopes and universal material testing machines. The results show that the joining of C/C composites to Ni based high temperature alloy is successfully achieved by vacuum brazing process. The fracture of the joint occurs in the C/C composites. The shear strength at high temperature of the brazed joints rapidly decreases above 700℃.
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2015年第1期69-72,共4页
Aerospace Materials & Technology
关键词
C/C复合材料
高温合金
钎焊
C/C composite, High temperature a!loy, Brazing
