Microstructure and hardness of the Cu-SiC and Cu-diamond composites produced by vacuum hot pressing

International Conference on Recent Advances in Materials, Mechanical and Civil Engineering

材料科学;机械制造;土木建筑工程

Krishna, S. Chenna^1 ; Vikram, T.^1 ; Viswanath, S.^1 ; Subramanian, P.K.^1 ; Janardhana Reddy, J.^2

Department of Metallurgical and Materials Technology, Mahatma Gandhi Institute of Technology, Hyderabad, India^1

Ceramics and Composites Group, Defence Metallurgical Research Laboratory, Hyderabad, India^2

关键词: Applied pressure;    Diamond composites;    Sintered density;    Vacuum hot pressing;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/330/1/012059/pdf
DOI  :  10.1088/1757-899X/330/1/012059

来源: IOP

【 摘 要 】

In the present investigation, Cu-SiC and Cu-diamond composites with different volume percent of reinforcements were produced by vacuum hot pressing. Copper powder with different amount of SiC and diamond were hot pressed at 1000°C for 0.5 h at an applied pressure of 32 MPa. The achieved sintered density of the composites was in the range of 94-98 %. The sintered density decreased with an increase in the amount of SiC and diamond. Hardness of the composites improved with an increase in the volume percent of the reinforcements. Hardness of the Cu-30 vol.% diamond and Cu-30vol. % SiC composites was 88 VHN and 104 VHN, respectively.