| 碳热还原法合成AIN晶须及其生长机理 |
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| 引用本文： | 周和平,陈浩,吴音,缪卫国,刘希.碳热还原法合成AIN晶须及其生长机理[J].材料研究学报,1998(1). |
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| 作者姓名： | 周和平 陈浩 吴音 缪卫国 刘希 |
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| 作者单位： | 清华大学材料科学与工程系!北京市，100084，清华大学新型陶瓷与精细工艺国家重点实验室，清华大学新型陶瓷与精细工艺国家重点实验室，清华大学新型陶瓷与精细工艺国家重点实验室，清华大学新型陶瓷与精细工艺国家重点实验室 |
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| 基金项目： | 国家自然科学基金!59572017 |
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| 摘 要： | 以Al2O3和石墨为原料，采用碳热还原法制备AIN晶须.研究了矿化剂的种类及温度等工艺对AIN晶须合成的影响结果表明，以CaF2和B2O3为矿化剂的AIN品须是以VLS机制生长的，高温下VLS机制可以转变为VS机制，同时存在两维成核及螺位错生长过程，晶须生长方向大多呈{101n}，（n=0，1，2，3）及{121m}，（m=0，1；2）的晶面生长
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| 关 键 词： | 氮化铝 晶须 碳热还原法 |
FABRICATION PROCESS AND GROWTH MECHANISM OF AIN WHISKERS BY CARBON THERMAL REDUCTION METHOD |
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| ZHOU Heping,CHEN Hao,WU Yin,MIAO Weiguo,LIU Xi.FABRICATION PROCESS AND GROWTH MECHANISM OF AIN WHISKERS BY CARBON THERMAL REDUCTION METHOD[J].Chinese Journal of Materials Research,1998(1). |
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| Authors: | ZHOU Heping CHEN Hao WU Yin MIAO Weiguo LIU Xi |
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| Abstract: | With Al2O3 and graphite as raw materials. AIN whiskers were fabricated by carbon thermal reduction method. The influence on AIN whiskers, such as additive effect, temperature control, was considered. The fabrication mechanism and growth characteristics of AIN whiskers were also investigated. With CaF2 and BO3 as additives, AIN whiskers were grown by VLS mechanism, and VLS may change to VS mechanism at high temperature. Growth processes of two dimensional nuclei and screw dislocation existed at the same time. Most orientation of AIN whiskers were normal to {101n}, (n=0,1,2,3) and normal to {121m}. (m=0, 1, 2). |
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| Keywords: | AIN whisker carbon thermal reduction |
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