Examination of Commercial AIN Powders. Proceedings of the InternationalConference (3rd) on Ceramic Powder Processing Science Held in San Diego,

摘要

Several commercial aluminum nitride powders were examined during this study.Materials synthesized by both carbothermal reduction and nitridation of aluminum were included in this effort. The chemical and physical characteristics of the powders were determined. Ceramic bodies were prepared by a dry-press, sinter process using a constant binder system for all compositions. Several sintering aids were utilized and the compositions were fired at temperatures ranging from 1700 deg C to 2000 deg C. In general, the carbothermally synthesized aluminum nitride powders were more active than the nitrided powders, even though the nitrided materials had consistently higher pressed densities. High sintered densities and high thermal conductivities were achieved from both types of powders.... Aluminum nitride, Ceramic powders, Sintering.