Recovery of the Strength of Ground Ceramics by Short Time Heat Treatment

精密机械零件陶瓷材料的精加工通常需要机械加工，但由于磨削加工过程中形成的缺陷，磨削陶瓷的强度往往会下降。本文介绍了通过在炉中加热地面部分几分钟来恢复陶瓷强度的尝试，并表明氧化铝陶瓷和氮化硅陶瓷都有显着的强度恢复。更简单的方法使用乙炔气体燃烧器也尝试缩短加热时间至一分钟，以获得充分的回收。这些方法将适用于提高机械陶瓷零件批量生产的可靠性。

Generally, machining processes are nesessary to finish ceramic materials for precision mechanical parts, however the strength of ground ceramics tend to be deteriorated due to flaws formed during grinding operations.This paper presents an attempt to recover the strength of ceramics by heating ground parts in the furnace for few minutes and shows remarkab1e recovery both for alumina ceramics and silicon nitride ceramics. Simpler method using acetyrene gas burner is also attempted and shorten the heating time up to one minute to obtain sufficient recovery.Those methods will be applicable to increase dependability of mass production ceramic parts for mechanical use.