Influence of Pressing Time on Steel-copper-graphite Bonding

材料科学技术（英文）, 2006, 22(2): 235-238.

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1.Department of Mechanical Engineering, Beijing Jiaotong University, Beijing 100044, China

2.Department of Mechanical Engineering, Beijing Jiaotong University, Beijing 100044, China

3.Department of Mechanical Engineering, Beijing Jiaotong University, Beijing 100044, China

4.Department of Mechanical Engineering, Beijing Jiaotong University, Beijing 100044, China

5.Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China

6.Metal Forming Department, Northeastern University, Shenyang 110006, China

7.Anshan Automobile Fittings Factory, Anshan 114014, China

基金项目: the National Natural Science Foundation of China(50274047;50304001) 北京交通大学校科研和教改项目 the Natural Science Foundation of Beijing The Ministry of Education of PRC Foundation

Influence of Pressing Time on Steel-copper-graphite Bonding

Keywords： Steel-copper-graphite bonding

The bonding of steel plate with QTi3.5-3.5 graphite slurry was studied by using pressing bonding technique.The influence of pressing time on the interfacial mechanical property of bonding plate was researched. The results show that: under the conditions of 620℃ preheating temperature of steel plate, 530℃ preheating temperature of dies, 46% solid fraction of QTi3.5-3.5 graphite slurry and 50 MPa pressure, there exists a nonlinear relationship between pressing time and interfacial shear strength. The interfacial shear strength of bonding plate increases with increasing pressing time and reaches a largest value about 127 MPa when pressing time is longer than 120 s. At the interface with the best mechanical property, there exists a continuous Fe-Cu inter-diffusion zone and a metallurgical bonding.

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Influence of Pressing Time on Steel-copper-graphite Bonding

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