| Fabrication of finegrained Al2O3 ceramic at low sintering temperature |
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| 引用本文： | 李华玲 王茂才 赵吉宾 刘伟军. Fabrication of finegrained Al2O3 ceramic at low sintering temperature[J]. 中国有色金属学会会刊, 2005, 15(2): 247-251 |
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| 作者姓名： | 李华玲 王茂才 赵吉宾 刘伟军 |
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| 作者单位： | [1]ShenyangInstituteofAutomation,ChineseAcademyofSciences,Shenyang110016,China [2]StateKeyLaboratoryforCorrosionandProtection,InstituteofMetalResearch,ChineseAcademyofSciences,Shenyang110016,China／／GraduateSchoolofChineseAcademyofSciences,Bei）ing100039,China [3]StateKeyLaboratoryforCorrosionandProtection,InstituteofMetalResearch,ChineseAcademyofSciences,Shenyang110016,China |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | A research on fabrication of finegrained Al2O3 ceramic at lower sintering temperature was carried out.Al2O3 powder with 50 nm in diameter is compounded with 11.24%Al and 4.75% Fe(mass fraction) by high-energy ball-milling. AI is got from Al powder which is a component of the materials being milled and Fe from steel milling balls and milling jar during the milling. In this way, nearly no impurity is brought into the composite powder during milling. With hot pressing of the composite powder and pure Al2O3 powder, it is proved that Al2O3 powder can be densified at lower sintering temperature when the powder is compounded in this way. Al2OC and AlFe form during sintering process of the composite powder. With the reactive sintering and multiphase sintering mechanisms, finegrained Al2O3 ceramic is fabricated at low sintering temperature.
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| 关 键 词： | 烧结工艺 氧化铝陶瓷 纳米复合粉末 高能球磨研磨 |
Fabrication of finegrained Al2O3 ceramic at low sintering temperature |
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| LI Hua-ling,WANG Mao-cai,ZHAO Ji-bin,LIU Wei-jun. Fabrication of finegrained Al2O3 ceramic at low sintering temperature[J]. Transactions of Nonferrous Metals Society of China, 2005, 15(2): 247-251 |
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| Authors: | LI Hua-ling WANG Mao-cai ZHAO Ji-bin LIU Wei-jun |
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| Abstract: | A research on fabrication of finegrained Al2 O3 ceramic at lower sintering temperature was carried out.Al2O3 powder with 50 nm in diameter is compounded with 11.24%Al and 4.75?(mass fraction) by high-energy ball-milling. Al is got from Al powder which is a component of the materials being milled and Fe from steel milling balls and milling jar during the milling. In this way, nearly no impurity is brought into the composite powder during milling. With hot pressing of the composite powder and pure Al2O3 powder, it is proved that Al2O3 powder can be densified at lower sintering temperature when the powder is compounded in this way. Al2OC and AlFe form during sintering process of the composite powder. With the reactive sintering and multiphase sintering mechanisms, finegrained Al2 O3 ceramic is fabricated at low sintering temperature. |
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| Keywords: | finegrained Al2O3 ceramic sintering nanometer Al2O3-Al-Fe composite powder high-energy ballmilling strength toughness |
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