The tribological properties of Ti3SiC2/Cu/Al/SiC composite at elevated temperatures | |
Department | 先进润滑与防护材料研究发展中心 |
Dang WT(党文涛)1,2; Ren SF(任书芳)1; Zhou JS(周健松)1; Yu YJ(俞友军)1; Wang LQ(王凌倩)1; Ren SF(任书芳); Zhou JS(周健松) | |
The second department | 固体润滑国家重点实验室 |
2016 | |
Source Publication | Tribology International |
ISSN | 0301-679X |
Volume | 104Pages:294-302 |
Abstract | Dense Ti3SiC2/Cu/Al/SiC composites (TCASc) were successfully produced by powder metallurgy/spark plasma sintering (SPS). The composition and microstructure of the composites were analyzed by X-ray diffractometry and scanning electron microscopy equipped with energy dispersive spectroscopy. The tribological properties of the TCASc sliding against Si3N4 ball at temperatures ranging from room temperature (RT) to 800 °C were investigated in comparison with those of Ti3SiC2 (TSC). The tribology tests were conducted on dry sliding tribometer by ball-on-disk configuration. The wear mechanisms were discussed in detail. The results show that the main phases of the composite include TSC, AlCu, SiC, and Al2O3. The incorporation of Al could inhibit the decomposition of TSC. The hardness and flexural strength of the composite are slightly lower than those of TSC. The tribological properties of TCASc and TSC are intensively dependent on temperature. The tribological properties of TCASc are better than those of TSC at room and medium temperatures (wear rate, WR, of TSC at RT and 200 °C: (8.63±0.37)×10−4 and (2.15±0.18)×10−3 of TCASc (5.31±0.55)×10−4 and (1.12±0.02)×10−3 mm3/N·m, respectively), while the wear properties of TCASc are not better than that of TSC at 400–800 °C (WR at 600 °C, for example, for TSC: (9.7±1.4)×10−5 and TCASc (2.27±0.15)×10−4 mm3/N·m, respectively). Abrasive wear dominates the wear mechanisms at RT and 200 °C for TCASc. The incorporated phases of AlCu, SiC, and Al2O3 reinforce the bonding of TSC grains and nail the surrounding soft TSC matrix under the cyclic stress. At high temperature, dynamic-equilibrium tribo-oxides layers show the lubricating and wear-reduction effects contributing to the decreasing friction and wear for both TSC and TCASc. The adhesive wear resulting from the plastic flow is one of the reasons of the higher WR of TCASc than that of TSC. |
Keyword | Sliding Wear Ceramic-matrix Composite Tribochemistry High Temperature |
Subject Area | 材料科学与物理化学 |
DOI | 10.1016/j.triboint.2016.09.008 |
Funding Organization | the National Natural Science Foundation of China (Grant no. 51405475;51475444) |
Indexed By | SCI |
If | 2.903 |
Language | 英语 |
Funding Project | 金属基高温润滑材料组 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/20403 |
Collection | 中国科学院材料磨损与防护重点实验室/先进润滑与防护材料研究发展中心 固体润滑国家重点实验室(LSL) |
Corresponding Author | Ren SF(任书芳); Zhou JS(周健松) |
Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
Recommended Citation GB/T 7714 | Dang WT,Ren SF,Zhou JS,et al. The tribological properties of Ti3SiC2/Cu/Al/SiC composite at elevated temperatures[J]. Tribology International,2016,104:294-302. |
APA | Dang WT.,Ren SF.,Zhou JS.,Yu YJ.,Wang LQ.,...&周健松.(2016).The tribological properties of Ti3SiC2/Cu/Al/SiC composite at elevated temperatures.Tribology International,104,294-302. |
MLA | Dang WT,et al."The tribological properties of Ti3SiC2/Cu/Al/SiC composite at elevated temperatures".Tribology International 104(2016):294-302. |
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