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| SiC晶片增韧ZrB_2复合陶瓷材料的制备与性能 | |
| 引用本文： | 王明福,汪长安,尉磊,张幸红.SiC晶片增韧ZrB_2复合陶瓷材料的制备与性能[J].稀有金属材料与工程,2009,38(Z2). |
| 作者姓名： | 王明福 汪长安 尉磊 张幸红 |
| 作者单位： | 1. 哈尔滨工业大学,黑龙江,哈尔滨,150090;清华大学,北京,100084 2. 清华大学,北京,100084 3. 哈尔滨工业大学,黑龙江,哈尔滨,150090 |
| 摘 要： | 研究了以氮化铝(AlN)为助烧剂的碳化硅晶片(SiC_(pl))增韧二硼化锆(ZrB_2)复合陶瓷材料的制备工艺,并测定其抗弯强度、断裂韧性、致密度和显微硬度.利用扫描电子显微镜(SEM)观察了样品的表面及断面形貌.复合陶瓷中SiC晶片的添加量分别为5%, 10%, 15%以及20%(体积分数, 下同),AlN作为烧结助剂添加量为3%.结果表明:适量SiC晶片的添加提高了SiC_(pl)/ZrB_2复合陶瓷的烧结致密度;SiC_(pl)/ZrB_2复合陶瓷的力学性能比纯ZrB_2陶瓷有所提高,抗弯强度和维氏硬度在5%SiC晶片添加量时达到最大,分别为(625.34±21.46) MPa和(14.60±0.84) GPa;断裂韧性在15%SiC晶片添加量时达到最大值(8.35 ± 0.26) MPa·m~(1/2).断口形貌观察表明主要增韧机制为裂纹偏转与晶片拔出. |
| 关 键 词： | SiC晶片 复合陶瓷 力学性能 |
Preparation and Mechanical Properties of Zirconium Diboride Matrix Composites Reinforced by Silicon Carbon Platelets |
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| Wang Mingfu,Wang Chang'an,Yu Lei,Zhang Xinghong.Preparation and Mechanical Properties of Zirconium Diboride Matrix Composites Reinforced by Silicon Carbon Platelets[J].Rare Metal Materials and Engineering,2009,38(Z2). | |
| Authors: | Wang Mingfu Wang Chang'an Yu Lei Zhang Xinghong |
| Affiliation: | Wang Mingfu 1,2,Wang Chang'an2,Yu Lei2,Zhang Xinghong1 (1. Harbin Institute of Technology,Harbin,150090,China) (2. Tsinghua University,Beijing 100084,China) |
| Abstract: | The preparation and mechanical properties of zirconium diboride matrix composites reinforced by silicon carbon platelets (SiCpl/ZrB2 composites) have been investigated using 3vol% AlN as sintering additive. Bending strength,fracture toughness,density and Vickers hardness were tested,respectively. Electron Scanning Microscope was used to observe the surface and the ruptured cross section. The additions of SiC platelets were 5 vol%,10 vol%,15 vol% and 20 vol%,respectively. The results showed that an adequate ... |
| Keywords: | ZrB_2 ZrB_2 SiC platelet composites mechanical properties |
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