@article{oai:niigata-u.repo.nii.ac.jp:00004188, author = {堀田, 憲康 and 木村, 勇雄 and 築野, 章人 and 斎藤, 夏風 and 松尾, 重友}, issue = {2}, journal = {窯業協會誌, 窯業協會誌}, month = {Feb}, note = {The nitriding reaction of floating Al particles in N_2 gas was studied at 1350°-1550℃. The hollow spherical and fibrous AIN's formed were examined by X-ray diffraction and scannig electron microscopy. The nitriding reaction of floating Al particles in N_2 gas proceeded in the following four stes : (ⅰ) floating Al particles melted and became spherical by surface tension, (ⅱ) up to 1350℃ the nitriding reaction was controlled by the diffusion of nitrogen through the AlN surface layer, (ⅲ) cracks propagatedd in the AlN layer at 1400°-1550℃. The nitriding reaction rapidly proceeded with the eruption of internally melted Al, (ⅳ) the eruption of Al also caused the nitriding reaction between vaporized Al and N_2 gas to form AlN, resulting in hollow spherical AlN and fibrous AlN. The synthesized AlN was white, indicative of high purity. Since the particle size of floating Al was determined by controlling the N_2 gas velocity, the classfication of Al particles was possible. The mean size and size distribution of hollow spherical AlN particles formed were controlled within the range 4 to 12μm. The hollow spherical AlN particles were so brittle that they were easily crushed to fine particles even by fingers. Thus abtained AlN particles were very fine and had narrow size distribution of 0.1-0.2μm.}, pages = {274--277}, title = {浮上Al粒子の窒化反応によるAlNの合成}, volume = {95}, year = {1987} }