Mechanical and tribological properties of NiAl-NbC-Ag composites prepared by hot-pressing sintering | |
Department | 固体润滑国家重点实验室 |
Feng XC(丰晓春)1,2; Jia JH(贾均红)1; Wang WZ(王文珍)1; Shan Y(陕钰)1; Jia JH(贾均红) | |
2017 | |
Source Publication | Journal of Materials Research |
ISSN | 0884-2914 |
Volume | 32Issue:12Pages:2361-2372 |
Abstract | NiAl-based nanocomposites were successfully fabricated by mechanical alloying proceeded vacuum-hot-pressing sintering, and the mechanical and tribological properties of the NiA–NbC composite were investigated. The results show that the nanostructured powder particles with the average size around 5 nm were successfully obtained by a high-energy-ball mill. After sintering, the composites were consisted of B2-ordered NiAl and NbC second phase, and the crystalline size of the NiAl phase was about 20 nm. The relative density, hardness, and compressive strength of nanostructured NiAl materials increased with increasing the Nb content, which can be attributed to the second phase hardening effect of in situ formed NbC particulates and fine grain strengthening of nanocrystalline NiAl phase. Thereafter, the friction coefficient of the NiAl–3NbC composite was lowered by the addition of silver and that is significantly lower than the NiAl intermetallic compound and NiAl–3NbC composite at elevated temperatures, which was attributed to the lubricating films formed in sliding process at elevated temperatures. While the wear rates of NiAl–3NbC–10Ag composites are higher than that of the NiAl–3NbC composites at each test temperature, especially at 500 °C and 700 °C, which might be attributed to the phase variations on the worn surfaces of the composites. |
Subject Area | 材料科学与物理化学 |
DOI | 10.1557/jmr.2017.177 |
Funding Organization | the National Natural Science Foundation of China (Grant Nos. 51471181;51575505;51675508) |
Indexed By | SCI |
If | 1.673 |
Language | 英语 |
Funding Project | 金属润滑材料组 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/22097 |
Collection | 固体润滑国家重点实验室(LSL) |
Corresponding Author | Jia JH(贾均红) |
Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
Recommended Citation GB/T 7714 | Feng XC,Jia JH,Wang WZ,et al. Mechanical and tribological properties of NiAl-NbC-Ag composites prepared by hot-pressing sintering[J]. Journal of Materials Research,2017,32(12):2361-2372. |
APA | Feng XC,Jia JH,Wang WZ,Shan Y,&贾均红.(2017).Mechanical and tribological properties of NiAl-NbC-Ag composites prepared by hot-pressing sintering.Journal of Materials Research,32(12),2361-2372. |
MLA | Feng XC,et al."Mechanical and tribological properties of NiAl-NbC-Ag composites prepared by hot-pressing sintering".Journal of Materials Research 32.12(2017):2361-2372. |
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LZ01030343.pdf(1236KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text |
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