Transactions of Nonferrous Metals Society of China
JOURNAL OF RAILWAY SCIENCE AND ENGINEERING
|Vol. 11 No. 3 June 2001|
（State Key Laboratory for Powder Metallurgy,
Central South University, Changsha 410083, P.R.China）
Abstract: The thermal degradation behaviors of AlN green specimens were studied by thermogravimetry analysis during the ceramic powder injection molding debinding process. The optimum binder composition and the debinding cycle were demonstrated by observing the TGA and DTA plots of AlN green specimens and analyzing the microstructure at different temperatures. By adding HDPE into the PW-EVA binder used in powder injection molding AlN can effectively reduce the mass lose rate in debinding process and improve the shape retention ability. At last, aluminum nitride ceramic with high room-temperature thermal conductivity of 162.5 W·m-1·K-1 was produced.
Key words: aluminum nitride (AlN); ceramic powder injection molding (CIM); binder; debinding