| 纳米AlN/BN复相陶瓷的显微结构与性能 |
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| 引用本文： | 金海云,王雯,高积强,乔冠军,金志浩.纳米AlN/BN复相陶瓷的显微结构与性能[J].无机材料学报,2006,21(1):176-180. |
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| 作者姓名： | 金海云 王雯 高积强 乔冠军 金志浩 |
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| 作者单位： | 西安交通大学材料强度国家重点实验室, 西安 710049 |
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| 摘 要： | 采用尿素与硼酸的反应, 在850℃氮气氛下, 合成了纳米BN?包裹的AlN粉料, 通过TEM观察, BN粒径为20～30nm. 通过热压烧结制备出纳米h-BN包裹的AlN/BN 复相陶瓷, SEM/TEM观察, h-BN呈细针状, 针长100～400nm, 针宽为30～50nm. 当h-BN含量≥20wt%时, 其硬度显著降低, 提高了材料的可加工性能.
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| 关 键 词： | 可加工 AlN 纳米BN 显微结构 |
| 文章编号： | 1000-324X（2006）01-0176-05 |
| 收稿时间： | 01 10 2005 12:00AM |
| 修稿时间： | 2005-01-102005-04-01 |
Micro-structure and Properties of Machinable AlN-BN Ceramic Nano-composites |
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| JIN Hai-Yun,WANG Wen,GAO Ji-Qiang,QIAO Guan-Jun,JIN Zhi-Hao.Micro-structure and Properties of Machinable AlN-BN Ceramic Nano-composites[J].Journal of Inorganic Materials,2006,21(1):176-180. |
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| Authors: | JIN Hai-Yun WANG Wen GAO Ji-Qiang QIAO Guan-Jun JIN Zhi-Hao |
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| Affiliation: | State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China |
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| Abstract: | The AlN/h-BN nanocomposite powders were prepared through the reaction of AlN powder, H3BO3, and CO(NH2)2 in nitrogen atmosphere at 850℃. TEM observation shows that the average particle diameter of BN is about 20～30nm. The AlN/BN ceramic composites were synthesized by hot-pressing. SEM/TEM observation shows that the BN particles are thin pin-shaped with 100～400nm pin-length and 30～50nm pin-width. The hardness of the composites decreases obviously and the machinable property increases when the BN content is more than 20wt%. |
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| Keywords: | AlN |
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