The sintering type of the billet is a solid state sintering at the temperature 1050 , the sintering contacting ' s speed was slow , even keeping temperature for 3 hours " , billet ' s sintering compacting degree was not high 該體系的粉料壓坯在1050的燒結(jié)屬固相燒結(jié),燒結(jié)致密化速度慢,即使保溫3個小時其致密化仍不很高。