| Comparison of Different Crucible Materials for the Growth of AIN Crystals |
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| 作者姓名： | LI Juan HU Xiao-Bo WANG Ying-Min NING Li-Na JIANG Shou-Zhen CHEN Xiu-Fang XU Xian-Gang WANG Ji-Yang JIANG Min-Hua |
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| 作者单位： | State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China |
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| 基金项目： | This work was supported by the National Natural Science Foundation of China （No. 50472068） and the Program for New Century Excellent Talents in University |
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| 摘 要： | Choice of crucible material is a key issue during the growth of AIN crystal. The stabilities at high temperature and life-spans of boron nitride （BN） crucible, tantalum （Ta） crucible and tungsten （W） crucible were compared. Tantalum crucible behaved worse at high temperature and life-span was shortened as compared with the other two crucible materials. It was very crisp and easy to crack. In contrast, self-seeded AIN crystals with different morphologies could be obtained at different high temperatures using BN crucible. The boron nitride crucible was stable below 2200 ℃, above which it would decompose. Thus it was unsuitable for the bulky AIN crystal growth. Tungsten crucible could endure the temperatures higher than 2200℃. Unfortunately we could only get AIN polycrystallines using tungsten crucible. After 50- 100 hours＇ run, the crucible was destroyed completely due to the multiple deep cracks. XRD results of destroyed tungsten crucible indicated that the main phases are tungsten carbide and tungsten nitride.
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| 关 键 词： | 氮化铝 坩锅 升华作用 晶体生长 |
| 收稿时间： | 2006-12-30 |
| 修稿时间： | 2007-03-15 |
Comparison of Different Crucible Materials for the Growth of AIN Crystals |
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| LI Juan HU Xiao-Bo WANG Ying-Min NING Li-Na JIANG Shou-Zhen CHEN Xiu-Fang XU Xian-Gang WANG Ji-Yang JIANG Min-Hua.Comparison of Different Crucible Materials for the Growth of AIN Crystals[J].Chinese Journal of Structural Chemistry,2007,26(10):1203-1207. |
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| Abstract: | |
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| Keywords: | aluminum nitride crucible sublimation |
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