Pulse Plasma Sintering of Nano-Crystalline Cu Powder
Nanocrystalline copper powders, produced by the reduction of the CuO with hydrogen, were consolidated using the pulse plasma sintering (PPS) method. The sintering process was carried out at temperatures between 500 and 900 oC under a load of 60 MPa for 5 min. The average crystallite size of the sintered component obtained at 500 oC was about 80nm and at 900 oC 1880 nm. The components produced at 500 oC had a relative density of 90 %, and those sintered at 900 oC 92 %; their hardness was 215 and 140 HV0.1, respectively.
Witold Lojkowski and John R. Blizzard
A. Michalski et al., "Pulse Plasma Sintering of Nano-Crystalline Cu Powder", Solid State Phenomena, Vol. 114, pp. 239-244, 2006