AlN ceramics synthesized by carbothermal reduction of mechanical activated Al2O3

Mechanism and kinetics of combustion-carbothermal synthesis of AlN nanopowders

“…Based on the previous studies [27,[38][39][40], the expression to reaction rate of solid-solid reaction is described as follows:…”

“…Xi et al [27] synthesized AlN by carbothermal reduction nitridation using α-Al 2 O 3 . The results indicate that for original and milled α-Al 2 O 3 , the activation energy of reaction is 529 kJ/mol and 457 kJ/mol, respectively.…”

“…These studies have concluded that the particle size and mixing homogeneity of the raw materials exert significant influence on the reaction condition as well as on the properties of the synthesized AlN powders. Therefore, the elaborate selection of the raw materials and the preparation of a homogeneous (Al 2 O 3 +C) precursor have become two essential tasks for the preparation of AlN by CRN method [21][22][23][24][25][26][27].…”

Effects of carbothermal reduction on the thermal and electrical conductivities of aluminum nitride ceramics

“…On the other hand, a carbothermal reduction has been studied to produce AlN powder of a high quality from aluminum hydroxide or oxide [19][20][21]. The carbothermal reduction is expressed as follows:…”

“…Jackson et al [6] www.elsevier.com/locate/ceramint studied the effects of amounts of Y 2 O 3 sintering additive on the thermal conductivity of AlN ceramics extensively; however, they did not observe the electrical properties. Various studies of the preparation of AlN powder through carbothermal reduction can be found in the literature [19][20][21]. However, the effects of a carbothermal reduction on both the electrical and thermal conductivities of AlN ceramics have not been elucidated.…”