论文部分内容阅读
Al/Al203 composites of different ratios were hot-press sintered at 575~640℃ under a pressure of 30 MPa for 2 h in a vacuum furnace. It was found that the relative density of the Al/Al203 composites could be increased evidently with the rise of sinter temperature. No reaction occurred between At and Al203 at the sinter temperatures. Under 640℃-30 MPa-2 h experimental condition, Al/Al203 system FGM was successfully fabricated, and its density range changed quasi-continuously from 2.887×103 kg/m3 to 3.1909×103 kg/m3 within the middle 1.0 mm thickness range.
It was found that the relative density of the Al / Al203 composites could be increased evidently with the temperature of 575-640 ° C under a pressure of 30 MPa for 2 h in a vacuum furnace. rise of sinter temperature. No reaction occurred between At and Al203 at the sinter temperatures. Under 640 ° C-30 MPa-2 h experimental condition, Al / Al203 system FGM was successfully fabricated, and its density range changed quasi-continuously from 2.887 × 103 kg / m3 to 3.1909 × 103 kg / m3 within the middle 1.0 mm thickness range.