Rigid three-dimensional networks of hafnium diboride for improving mechanical and wear properties of boron carbide
文献类型：期刊论文
| 作者 | Chen, Leilei; Zhang, Zhenyu; Wang, Ji; Lou, Ming; Chen, Xiaolong; Yuan, Yuan; Wang, Lu; Xu, Kai; Chang, Keke |
| 刊名 | MATERIALS & DESIGN
 |
| 出版日期 | 2021 |
| 卷号 | 210 |
| 关键词 | TRIBOLOGICAL PROPERTIES B4C-HFB2 COMPOSITES B4C CERAMICS COATINGS HARDNESS AMORPHIZATION DEFORMATION BEHAVIORS FRICTION |
| 英文摘要 | Being one of the hardest materials known in nature, boron carbide (B4C) suffers from severe degradation of mechanical properties when subjected to external pressure or shear stress, which hinders its application in metal forming and machining industries. Herein, based on the phase diagrams, a new strengthening strategy consisting of constructing three-dimensional hafnium diboride (HfB2) networks was proposed to reinforce B4C using the molten-salts method followed by spark plasma sintering (SPS). It was found that the surface amorphization and subsequent decarburization were the main wear regime of pure B4C. Incorporating hard HfB2 networks in B4C resulted in enhanced mechanical properties and reduced wear rates, as the deformation and decarburization of B4C grains were effectively restrained. The excessively high Hf contents, however, made the composites prone to severe adhesive wear following the material transfer from mating materials during the inception of sliding contact, which led to deteriorated wear performances. Thus, the optimal molar ratio of Hf to B4C was determined with the underlying wear mechanisms delineated. The presented results not only show the feasibility of B4C-HfB2 composites as tool materials but also provide a novel designing strategy employing hard networks rather than conventional compliant binders to fabricate wear-resistant composite materials. (C) 2021 The Author(s). Published by Elsevier Ltd. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21309]  |
| 专题 | 2021专题_期刊论文 |
| 作者单位 | 1.Zhang, ZY (corresponding author), Dalian Univ Technol, Minist Educ, Key Lab Precis & Nontradit Machining Technol, Dalian 116024, Peoples R China. 2.Chang, KK (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Marine Mat & Related Technol, Zhejiang Key Lab Marine Mat & Protect Technol, Ningbo 315201, Zhejiang, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Chen, Leilei,Zhang, Zhenyu,Wang, Ji,et al. Rigid three-dimensional networks of hafnium diboride for improving mechanical and wear properties of boron carbide[J]. MATERIALS & DESIGN,2021,210. |
| APA | Chen, Leilei.,Zhang, Zhenyu.,Wang, Ji.,Lou, Ming.,Chen, Xiaolong.,...&Chang, Keke.(2021).Rigid three-dimensional networks of hafnium diboride for improving mechanical and wear properties of boron carbide.MATERIALS & DESIGN,210. |
| MLA | Chen, Leilei,et al."Rigid three-dimensional networks of hafnium diboride for improving mechanical and wear properties of boron carbide".MATERIALS & DESIGN 210(2021). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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