| 粉末冶金法制备PSZ/Mo复合材料的研究 |
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| 引用本文： | 李云凯,王勇.粉末冶金法制备PSZ/Mo复合材料的研究[J].材料科学与工程学报,2002,20(3):399-402. |
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| 作者姓名： | 李云凯 王勇 |
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| 作者单位： | 北京理工大学机械工程与自动化学院材料系,北京,100081 |
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| 基金项目： | 国防科技重点实验室基金资助项目 ( 99JS61 7 1 BQ0 1) |
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| 摘 要： | 本文采用粉末冶金法制备了不同成分的PSZ/Mo复合材料。并对其密度、弹性模量和热膨胀系数进行了测量和分析 ,用XRD进行了物相分析。实验结果表明 :纳米氧化锆的烧结性能比金属钼好 ;弹性模量估算选用简单混合法则进行计算时应进行修正 ;钼和氧化锆在烧结时不发生化学反应。通过热压PSZ/Mo功能梯度材料的断口扫描分析发现 :虽然金属钼和纳米氧化锆具有一定增韧作用 ,但材料断裂方式仍以脆性断裂为主
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| 关 键 词： | 复合材料 相 断口 |
| 文章编号： | 1004-793X(2002)03-0399-04 |
| 修稿时间： | 2001年9月7日 |
Analysis of Fabrication of Nanometer PSZ/Mo Composite by Powder Metallurgy |
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| WANG Yong,LI Yun kai,ZHONG Jia xiang.Analysis of Fabrication of Nanometer PSZ/Mo Composite by Powder Metallurgy[J].Journal of Materials Science and Engineering,2002,20(3):399-402. |
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| Authors: | WANG Yong LI Yun kai ZHONG Jia xiang |
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| Abstract: | In the paper,the different componet Mo/PSZ composite materials were synthesized by means of metallurgical method.The density,elastic modulus and thermal expansion coefficient are measured and analyzed.Used the methods of XRD,the phase of the specimen was analyzed.Results show:Nanometer zirconia is easier for sintering than molybdenum.Being properly corrected,the simple blending model can be used in the materials calculations.When molybdenum and zirconia are sintering,there is no chemical interaction between them.The rupture morphology and the component of tiny section of hot pressing FGM were investigated by SEM and EPMA.It can be found that although the molybdenum and nanometer zirconia strength toughness,the main fracture manner is brittle fracture. |
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| Keywords: | composite materials phase rupture |
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