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首页 > 过刊浏览>2023年第52卷第9期 >3003-3011. DOI:10.12442/j.issn.1002-185X.20220953
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添加W对ZrB2-SiC复合材料的微观组织、力学性能和氧化行为的影响
作者:
作者单位:

1.西安科技大学 机械工程学院，陕西 西安 710054;2.中国科学院 兰州化学物理研究所 固体润滑国家重点实验室，甘肃 兰州 730000;3.烟台先进材料与绿色制造山东省实验室，山东 烟台 264006;4.烟台中科先进材料与绿色化工产业技术研究院，山东 烟台 264006;5.西北有色金属研究院，陕西 西安 710016

基金项目:

Foundation item: NSFC(51804251, 52104384), Science Fund of Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing (AMGM2021F04), Shandong Provincial Natural Science Foundation (ZR2021ME168 and ZR2021JQ20), Planning project of Xi 'an Science and Tech-nology(21XJZZ0041), LICP Cooperation Foundation for Young Scholars, the Taishan Scholars Program of Shandong Province, and the Youth Innovation Promotion Association CAS 2021423, Key Research and Development Program of Shaanxi (2023-YBGY-343).


Effect of W Addition on Microstructure, Mechanical Properties, and Oxidation Behavior of ZrB2-SiC Composites
Author:
Affiliation:

1.College of Mechanical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China;2.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;3.Shandong Laboratory of Yantai Advanced Materials and Green Manufacture, Yantai 264006, China;4.Yantai Zhongke Research Institute of Advanced Materials and Green Chemical Engineering, Yantai 264006, China;5.Northwest Institute for Nonferrous Metal Research, Xi 'an 710016, China

Fund Project:

National Natural Science Foundation of China (51804251, 52104384); Science Fund of Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing (AMGM2021F04); Shandong Provincial Natural Science Foundation (ZR2021ME168, ZR2021JQ20); Planning Project of Xi'an Science and Technology (21XJZZ0041); LICP Cooperation Foundation for Young Scholars (HZJJ21-07); Taishan Scholars Program of Shandong Province; Youth Innovation Promotion Association (CAS 2021423); Key Research and Development Program of Shaanxi (2023-YBGY-343)

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    摘要:

    通过放电等离子烧结技术制备了添加不同W含量(1%，3%和5%，体积分数，下同)的ZrB2-SiC复合材料，研究了烧结过程中复合材料的致密化行为，分析了添加W对复合材料微观组织演化、相组成、力学性能和氧化行为的影响。结果表明：W的添加使复合材料的微观组织表现出核壳结构，以ZrB2晶粒为核，原位形成的(Zr, W)B2固溶体为壳，有效地促进了复合材料的致密化和晶粒细化。对比不含W的复合材料，含W复合材料的维氏硬度、抗弯曲强度和断裂韧性显著提高，W添加含量在3%时力学性能最优，复合材料表现出最佳的硬度、强度和韧性。随着W添加量从0%增加到5%，复合材料的氧化增重和氧化层厚度逐渐减小。当W添加量为5%时，复合材料的SiC贫化层消失。最后，详细说明了W的添加对复合材料性能的影响机制。

    Abstract:

    The ZrB2-SiC composites with refractory metal W of different contents (1vol%, 3vol%, and 5vol%) were prepared by spark plasma sintering. The densification behavior of composites during sintering process was investigated. The influence of W additions on the microstructure evolution, phase composition, mechanical properties, and oxidation behavior of W-doped composites was studied. Results show that the W addition leads to the formation of core-shell structures in the composites, where the ZrB2 grains are considered as the core and the in-situ formed (Zr, W)B2 solid solution is considered as the shell, thereby effectively promoting the grain refinement and composite densification. Compared with those of the W-free composites, the Vickers hardness, flexural strength, and fracture toughness of W-doped composites are enhanced. The optimal mechanical properties can be achieved at W addition content of 3vol%: the highest hardness, strength, and toughness can be obtained for the composites. The mass gain and oxide scale thickness of composites are gradually decreased with increasing the W addition from 0vol% to 5vol%. When the W addition in composite is 5vol%, the SiC-depleted layer disappears. Finally, the influence mechanism of W addition on the performance of composites is discussed.

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高中堂,卢佳炜,于源,王毅飞,余德锋,李彤阳,王鲁杰,汤华国,乔竹辉.添加W对ZrB2-SiC复合材料的微观组织、力学性能和氧化行为的影响[J].稀有金属材料与工程,2023,52(9):3003~3011.[Gao Zhongtang, Lu Jiawei, Yu Yuan, Wang Yifei, Yu Defeng, Li Tongyang, Wang Lujie, Tang Huaguo, Qiao Zhuhui. Effect of W Addition on Microstructure, Mechanical Properties, and Oxidation Behavior of ZrB2-SiC Composites[J]. Rare Metal Materials and Engineering,2023,52(9):3003~3011.]
DOI：10.12442/j. issn.1002-185X.20220953

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  • 收稿日期:2022-12-07
  • 最后修改日期:2023-03-16
  • 录用日期:2023-03-17
  • 在线发布日期: 2023-09-22
  • 出版日期: 2023-09-21

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