专利名称：Method of increasing the oxidation
resistance of silicon nitride
发明人：John A. Mangels申请号：US05/549415申请日：19750212公开号：US03983198A公开日：19760928
摘要：A method of increasing the oxidation resistance of silicon nitride is disclosed. Afurnace is preheated to a temperature in the range of 2500. degree.F to 2750°F. Thesilicon nitride body to be treated is inserted into the preheated furnace. The siliconnitride article is maintained in the furance for a period of time sufficient to develop anoxidation resistant surface on the article. The period of time is generally in the rangefrom one-half hour to five hours.
申请人：FORD MOTOR COMPANY
代理人：William E. Johnson,Keith L. Zerschling
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