Investigation of Contact Materials for Microcrystal CuCr50 Vacuum Breaker

CuCr50 alloy powder was made by high energy ball milling process and compacted into dense compact by hot pressing in vacuum furnace. The particle size, change of morphology, microstructure of hot pressed compact and its density change with temperature and time during milling process were reviewed by using scanning electronic microscope, X ray diffractometer, nelgy spectrometer, etc.