Two ways were used to prepare PFM powders, one was to add different proportions of leucite to the ceramic frit, and the other was to grain-process the ceramic frit.

• 采用在烤瓷熔块中加入不同比例的白榴石和对烤瓷熔块进行晶化处理两种途径制备金属烤瓷粉。