Effect of Ta addition on the microstructures and mechanical properties of in situ bi-phase (TiB2-TiCxNy)/(Ni-Ta) cermets
文献类型：期刊论文
| 作者 | H.Y.Yang; Z.Wang; S.L.Shu; J.B.Lu |
| 刊名 | Ceramics International
 |
| 出版日期 | 2019 |
| 卷号 | 45期号:4页码:4408-4417 |
| 关键词 | Cermets,Ta content,Mechanical properties,high-temperature synthesis,combustion synthesis,high-strength,ti-c,compression properties,tantalum content,composites,behavior,zr,(ticxny-tib2)/ni,Materials Science |
| ISSN号 | 0272-8842 |
| DOI | 10.1016/j.ceramint.2018.11.118 |
| 英文摘要 | In this work, in situ bi-phase (TiB2-TiCxNy)/(Ni-Ta) cermets were fabricated via a combined combustion synthesis and hot-pressing (CSHP) method in a Ni-Ti-BN-B4C-Ta system. The effects of Ta addition on the reaction process, phase constituents, microstructures and mechanical properties of the (TiB2-TiCxNy)/(Ni-Ta) cermets were studied. Ta is shown to dilute the system and lead to a small number of intermediate phases (Ni20Ti3B6 and Ni3Ti) that are retained in the products. Furthermore, the addition of Ta can markedly refine the ceramic particles and decrease the size and quantity of voids. The evaluation of the mechanical properties revealed that an increase in the Ta content resulted in increases in the compression strength (sigma(UCS)) and hardness and that the fracture strain (epsilon(f)) increased first and then decreased. The cermet with the optimal addition of 5 wt % Ta possessed the best mechanical properties without decreasing the value of epsilon(f) (2.9%). The addition of 5 wt% Ta resulted in a compressive strength of 3.37 GPa and the highest hardness of 1909 Hv, which is an increase of similar to 16% and similar to 22%, respectively, compared to cermets without added Ta. |
| 语种 | 英语 |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/62881]  |
| 专题 | 中国科学院长春光学精密机械与物理研究所 |
| 推荐引用方式 GB/T 7714 | H.Y.Yang,Z.Wang,S.L.Shu,et al. Effect of Ta addition on the microstructures and mechanical properties of in situ bi-phase (TiB2-TiCxNy)/(Ni-Ta) cermets[J]. Ceramics International,2019,45(4):4408-4417. |
| APA | H.Y.Yang,Z.Wang,S.L.Shu,&J.B.Lu.(2019).Effect of Ta addition on the microstructures and mechanical properties of in situ bi-phase (TiB2-TiCxNy)/(Ni-Ta) cermets.Ceramics International,45(4),4408-4417. |
| MLA | H.Y.Yang,et al."Effect of Ta addition on the microstructures and mechanical properties of in situ bi-phase (TiB2-TiCxNy)/(Ni-Ta) cermets".Ceramics International 45.4(2019):4408-4417. |
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