caa a22 4500 388020989 CHVBK 20180307124924.0 cr unu---uuuuu 161130e199803 xx s 000 0 eng 10.1557/JMR.1998.0085 doi S0884291400043223 pii (NATIONALLICENCE)cambridge-10.1557/JMR.1998.0085 Combustion synthesis of boron nitride powder [Elektronische Daten] A combustion synthesis (SHS) process developed in our previous study for the synthesis of Si3N4 has been tested for the synthesis of boron nitride (BN) powder. Boron and NaN3 powders were used as the reactants. In addition to ammonium halides, KHF2, FeCl3, NaNH2, or a mixture of 50 mol% FeCl3 and 50 mol% NaNH2 was added to the reactants to examine their catalytic effect. These powders were mixed and pressed into a cylindrical compact. The compact was wrapped up with an igniting agent (i.e., Mg + Fe3O4) and the synthesis reaction was triggered by the combustion of the igniting agent. It was found that only those reagents containing both halogen and hydrogen can exert effectively the catalytic effect. The BN powder as-synthesized is mostly in the form of agglomerated fine particles (0.1-1 μm in diameter) and is hexagonal in crystalline structure. Effects of various experimental parameters on the product yield were investigated. A possible reaction mechanism was proposed, which explains the effects of the experimental parameters on the synthesis reaction. Copyright © Materials Research Society 1998 Hwang Chyi-Ching Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan, 70101, Republic of China Chung Shyan-Lung Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan, 70101, Republic of China Journal of Materials Research Cambridge University Press 13/3(1998-03), 680-686 0884-2914 13:3<680 1998 13 JMR https://doi.org/10.1557/JMR.1998.0085 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1557/JMR.1998.0085 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hwang Chyi-Ching Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan, 70101, Republic of China NATIONALLICENCE 700 1- Chung Shyan-Lung Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan, 70101, Republic of China NATIONALLICENCE 773 0- Journal of Materials Research Cambridge University Press 13/3(1998-03), 680-686 0884-2914 13:3<680 1998 13 JMR CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge