| SiBON陶瓷中BN晶片的析出与力学性能 |
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| 引用本文： | 温广武,雷廷权,张俊宝.SiBON陶瓷中BN晶片的析出与力学性能[J].材料热处理学报,2009,30(2). |
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| 作者姓名： | 温广武 雷廷权 张俊宝 |
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| 作者单位： | 1. 哈尔滨工业大学(威海)材料学院,山东,威海,264209;哈尔滨工业大学材料学院,黑龙江,哈尔滨,150001
2. 哈尔滨工业大学材料学院,黑龙江,哈尔滨,150001 |
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| 基金项目： | 国家自然科学基金(50672018);;哈尔滨工业大学科研创新团队基金 |
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| 摘 要： | 在Si-O网络中掺杂B、N元素形成一种新型陶瓷材料SiBON,以便抑制SiO2析晶及提高SiO2耐热温度,并且通过从SiBON非晶粉末烧结中析出BN增强相的途径提高熔石英基陶瓷的力学性能。研究表明,烧结体物相组成为析出的h-BN和非晶态基体,其中1400、1600和1700℃烧结析出的h-BN形貌特征为近等轴颗粒、大片晶和小片晶。SiBON陶瓷具有远高于熔石英陶瓷的力学性能。强化机制为析出相对基体的界面切向压应力作用,而韧化机制为片晶的桥接和拔出。
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| 关 键 词： | SiBON BN晶片 力学性能 |
Precipitation of BN crystals in SiBON ceramics and its mechanical properties |
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| WEN Guang-wu,LEI Ting-quan,ZHANG Jun-bao.Precipitation of BN crystals in SiBON ceramics and its mechanical properties[J].Transactions of Materials and Heat Treatment,2009,30(2). |
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| Authors: | WEN Guang-wu LEI Ting-quan ZHANG Jun-bao |
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| Affiliation: | 1.School of Materials Science and Technology;Harbin Institute of Technology at Weihai;Weihai 264209;China;2.School of Materials Science and Technology;Harbin Institute of Technology;Harbin 150001;China |
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| Abstract: | A new type of ceramics,SiBON,was fabricated by introducing B and N into Si-O network with purposes of inhabiting crystallization and increasing melting point of silica based materials.A route to improve mechanical properties of silica based materials was also presented,which is in-situ formation of reinforcement by means of crystallization of BN grains during the sintering of SiBON amorphous powder.Results show that the sintered SiBON is composed of precipitated h-BN grains and amorphous matrix.The morpholo... |
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| Keywords: | SiBON BN flakes mechanical properties |
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