| 高温N2气氛下树脂结合刚玉材料中阿隆相的形成机制 |
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| 引用本文： | 聂熙,李勇,秦海霞,闫明伟,姚桂生,金秀明. 高温N2气氛下树脂结合刚玉材料中阿隆相的形成机制[J]. 复合材料学报, 2018, 35(12): 3393-3399. DOI: 10.13801/j.cnki.fhclxb.20180328.002 |
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| 作者姓名： | 聂熙 李勇 秦海霞 闫明伟 姚桂生 金秀明 |
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| 作者单位： | 北京科技大学 材料科学与工程学院, 北京 100083 |
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| 摘 要： | 以酚醛树脂为结合剂，分别以100wt%烧结刚玉细粉、100wt%电熔刚玉细粉和50wt%烧结刚玉加50wt%电熔刚玉混合细粉为原料制备试样，试样在N2气氛下经1 500℃和1 600℃烧成，对烧后试样进行XRD、SEM和EDAS表征分析。结果表明：1 500℃烧后试样中生成了γ-AlON（Al5O6N）和12H多型体（Al6O3N4），1 600℃烧后试样中生成了γ-AlON（Al5O6N）、21R多型体（Al7O3N5）和16H多型体（Al8O3N6）。1 600℃烧成试样中生成的阿隆（AlON）含量较1 500℃烧成试样显著增多。在相同温度下，50wt%烧结刚玉加50wt%电熔刚玉混合细粉试样中生成的AlON含量最多，100wt%电熔刚玉细粉试样次之，100%烧结刚玉细粉试样中生成的AlON含量最少。分析了AlON的形成机制并建立了刚玉细粉与碳的反应模型。
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| 关 键 词： | 电熔刚玉 烧结刚玉 碳热还原氮化 阿隆(AlON) 模型 |
| 收稿时间： | 2018-01-02 |
Formation mechanism of AlON in resin bonded corundum materials under N2-blowing at high temperature |
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| NIE Xi,LI Yong,QIN Haixia,YAN Mingwei,YAO Guisheng,JIN Xiuming. Formation mechanism of AlON in resin bonded corundum materials under N2-blowing at high temperature[J]. Acta Materiae Compositae Sinica, 2018, 35(12): 3393-3399. DOI: 10.13801/j.cnki.fhclxb.20180328.002 |
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| Authors: | NIE Xi LI Yong QIN Haixia YAN Mingwei YAO Guisheng JIN Xiuming |
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| Affiliation: | School of Material Science and Engineering, University of Science and Technology, Beijing 100083, China |
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| Abstract: | Using phenolic resin as binding agent, samples with sintered alumina (100wt%), fused corundum (100wt%) and sintered alumina (50wt%) mixed with fused corundum (50wt%) were prepared, respectively, then the samples were sintered at 1 500℃ and 1 600℃ under flowing nitrogen, respectively. Sintered samples were characterized by XRD, SEM and EDAS. The results show that γ-AlON(Al5O6N) and 12H polytype(Al6O3N4) form in samples sintered at 1 500℃, while γ-AlON(Al5O6N), 21R polytype(Al7O3N5) and 16H polytype(Al8O3N6) form in samples sintered at 1 600℃. The content of AlON increases remarkably in samples sintered at 1 600℃ compared with samples sintered at 1 500℃. At the same sintering temperature, AlON contents in samples prepared with sintered alumina (50wt%) mixed with fused corundum (50wt%), fused corundum (100wt%) and sintered alumina (100wt%) decrease inturn. The formation mechanism of AlON was studied and the reaction model of alumina powder and carbonis was presented. |
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| Keywords: | fused corundum sintered alumina carbothermal reduction nitridation AlON model |
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