| Si_3N_4/SiC(N)纳米复相陶瓷的制备与性能研究 |
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| 引用本文： | 晏建武,张晨曙,王伟兰,李卫超,艾云龙,王家宣. Si_3N_4/SiC(N)纳米复相陶瓷的制备与性能研究[J]. 工具技术, 2003, 37(4): 3-6 |
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| 作者姓名： | 晏建武 张晨曙 王伟兰 李卫超 艾云龙 王家宣 |
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| 作者单位： | 南昌航空工业学院 |
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| 摘 要： | 采用极性分散剂和超声分散技术 ,在微米Si3 N4基体中加入SiC纳米颗粒 ,用真空热压烧结法制备出Si3 N4/SiC(N)纳米复相陶瓷。研究结果表明 :加入SiC纳米颗粒可显著降低烧结温度 ,阻止 β Si3 N4晶粒的过度生长 ,细化晶粒组织 ,提高复合陶瓷材料的致密度和机械性能 ;含 15wt%SiC纳米颗粒的复相陶瓷具有最佳断裂韧度和较高抗弯强度 ,可作为高速切削刀具和模具的候选材料。
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| 关 键 词： | 复相陶瓷 纳米颗粒 氮化硅 碳化硅 制备 性能 |
| 修稿时间： | 2002-09-01 |
Study on Preparation and Performance of Si3N4/SiC(N) Multi-phase Nano-ceramics |
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| Yan Jianwu Zhang Chenshu Wang Weilan et al. Study on Preparation and Performance of Si3N4/SiC(N) Multi-phase Nano-ceramics[J]. Tool Engineering(The Magazine for Cutting & Measuring Engineering), 2003, 37(4): 3-6 |
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| Authors: | Yan Jianwu Zhang Chenshu Wang Weilan et al |
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| Affiliation: | Yan Jianwu Zhang Chenshu Wang Weilan et al |
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| Abstract: | The polarity dispersant, ultrasonic disperse and vacuum-sintering technology are applied to prepare the Si 3N 4/SiC(N) multi-phase nano-ceramics by adding the nano-sized SiC particles to the Si 3N 4 basal material. The investigation results show that with the addition of nano-sized SiC particles, the sintering temperature is decreased greatly and the overgrowth of β -Si 3N 4 grains is prohibited and grain structure is refined, so that the density and mechanical properties of the composite ceramics are improved. The Si 3N 4/SiC(N) multi-phase ceramics added 15wt% nano-sized SiC have the best fracture toughness and improved bend strength, so can be used as a candidate for high-speed cutting tool and die materials. |
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| Keywords: | multi-phases ceramics nano-sized particle Si 3N 4 SiC preparation performance |
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