Profiling interfacial reaction features between diamond and Cu-Sn-Ti active filler metal brazed at 1223 K  

作　　者：Yonggang Fan Kenan Li Haodong Li Cong Wang 

机构地区：[1]Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education),School of Metallurgy,Northeastern University,Shenyang 110819,China [2]State Key Laboratory of Superabrasives,Zhengzhou Research Institute for Abrasives&Grinding Co.,Ltd.,Zhengzhou 450001,China [3]State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China

出　　处：《Journal of Materials Science & Technology》2022年第36期100-105,共6页材料科学技术（英文版）

基　　金：the support from the National Natural Science Foundation of China(Nos.52104360 and U20A20277);Research Fund for Central Universities(Nos.N2025025 and N2125024);Project funded by China Postdoctoral Science Foundation(Nos.2020TQ0060 and 2020M680965);Postdoctoral research fund of Northeastern University(No.20210202);the State Key Laboratory of Tribology,Tsinghua University(No.SKLTKF20B14);State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences(No.LSL-2003);State Key Laboratory of Advanced Brazing Filler Metals and Technology,Zhengzhou Research Institute of Mechanical Engineering Co.,LTD(No.SKLABFMT202002);supported by the Fund of the State Key Laboratory of Solidification Processing,Northwestern Polytechnic University(Grant No.SKLSP202114)。

摘　　要：Diamond/Cu-Sn-Ti composites have been successfully prepared by cold-press forming in conjunction with high-temperature vacuum active brazing at 1223 K.Ensuing wetting behaviors between diamond and filler metal,interfacial characteristics of the reaction layer,and wear resistance of the bulky composite have been fully investigated.It is revealed that all diamond particles can only be fully coated when the TiH_(2)content exceeds 5 wt%,below which sharp edges on diamond can still be observed.The interfacial reaction layer is found to be composed of TiC,the thickness of which is demonstrated to increase as a function of TiH_(2)content,arriving at the peak value of 1.70μm and remaining almost constant afterwards.It is further shown that the maximum wear resistance occurs approaching 5 wt%TiH_(2)content.Potential mechanisms responsible for such interesting phenomena have been postulated.

关 键 词：DIAMOND Cu-Sn-Ti BRAZING Interfacial layer Powder metallurgy 

分 类 号：TG454[金属学及工艺—焊接]