摘要
1 Introduction AlN ceramics with high thermal-conductivity has found wide application in thermochemistry and electronics and attracts more and more attention. Driect nitridation of aluminum （known as "Geuther process"） is one of the main mutes for synthesizing AIN. Another method is the carbothermal-reduction and nitridation （known as "Serpek process"）; though it is better in many ways, problems still exist to be solved, e. g. since ml<sub>2</sub>O<sub>3</sub> is hard to be homogeneously mixed with carbon and because of its poor reactiveness,
