中国有色金属学会会刊(英文版)
中國有色金屬學會會刊(英文版)
중국유색금속학회회간(영문판)
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
2003年
1期
170-174
,共5页
秦明礼%曲选辉%林健凉%肖平安%汤春峰%祝宝军%雷长明
秦明禮%麯選輝%林健涼%肖平安%湯春峰%祝寶軍%雷長明
진명례%곡선휘%림건량%초평안%탕춘봉%축보군%뢰장명
aluminum nitride%urea%precursor%carbothermal reduction
AlN powders were synthesized by carbothermal reduction method from aluminum nitrate and glucose.The effect of urea on the preparation and nitridation of the precursors was studied. It is found that urea can affectthe morphology and composition of the precursor as well as the nitridation process. During the nitridation process ofthe precursor prepared without urea, α-A12 O3 and A1ON are detected and a high temperature(1600 ℃ ) is needed fora complete conversion. While for the precursor prepared with urea, a complete conversion is got at a relatively lowtemperature(1 400 ℃ ) and AlN is synthesized directly from γ-Al2 O3, with no sign of the formation of α-Al2 O3 andAlON. AlN powders synthesized from the precursor prepared without urea agglomerate badly, while the powderssynthesized from the precursor prepared with urea are soft aggregates of fine particle, which can be easily dispersed.
