Tribological behavior of femtosecond laser textured surfaces of 20CrNiMo/beryllium bronze tribo-pairs
文献类型：期刊论文
| 作者 | He, Xia; Zhong, Lin; Wang, Guorong; Liao, Yang; Liu, Qingyou |
| 刊名 | ind. lubr. tribol.
 |
| 出版日期 | 2015 |
| 卷号 | 67期号:6页码:630 |
| 通讯作者 | zhong, l (reprint author), southwest petr univ, sch mech & elect engn, chengdu, peoples r china. |
| 英文摘要 | purpose - this paper aims to carry out tribological experiments to explore the applications of femtosecond laser surface texturing technology on rock bit sliding bearing to enhance the lifetime and working performance of rock bit sliding bearing under high temperature and heavy load conditions. design/methodology/approach - surface textures on beryllium bronze specimen were fabricated by femtosecond laser ablation (800 nm wavelength, 40 fs pulse duration, 1 khz pulse repetition frequency), and then the tribological behaviors of pin-on-disc configuration of rock bit bearing were performed with 20crnimo/beryllium bronze tribo-pairs under non-newtonian lubrication of rock bit grease. findings - the results showed that the surface texture on beryllium bronze specimens with specific geometrical features can be achieved by optimizing femtosecond laser processing via adjusting laser peak power and exposure time; more than 52 per cent of friction reduction was obtained from surface texture with a depth-to-diameter ratio of 0.165 and area ratio of 5 per cent at a shear rate of 1301 s(-1) under the heavy load of 20 mpa and high temperature of 120 degrees c, and the lubrication regime of rock bit bearing unit tribo-pairs was improved from boundary to mixed lubrication, which indicated that femtosecond laser ablation technique showed great potential in promoting service life and working performance of rock bit bearing. originality/value - femtosecond laser-irradiated surface texture has the potential possibility for application in rock bit sliding bearing to improve the lubrication performance. because proper micro dimples showed good lubrication and wear resistance performance for unit tribo-pairs of rock bit sliding bearing under high temperature, heavy load and non-newtonian lubrication conditions, which is very important to improve the efficiency of breaking rock and accelerate the development of deep-water oil and gas resources. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 版本 | 出版稿 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/14080]  |
| 专题 | 上海光学精密机械研究所_强场激光物理国家重点实验室 |
| 作者单位 | 1.[He, Xia 2.Zhong, Lin 3.Wang, Guorong] Southwest Petr Univ, Sch Mech & Elect Engn, Chengdu, Peoples R China 4.[Liao, Yang] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China 5.[Liu, Qingyou] Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, Xia,Zhong, Lin,Wang, Guorong,et al. Tribological behavior of femtosecond laser textured surfaces of 20CrNiMo/beryllium bronze tribo-pairs[J]. ind. lubr. tribol.,2015,67(6):630. |
| APA | He, Xia,Zhong, Lin,Wang, Guorong,Liao, Yang,&Liu, Qingyou.(2015).Tribological behavior of femtosecond laser textured surfaces of 20CrNiMo/beryllium bronze tribo-pairs.ind. lubr. tribol.,67(6),630. |
| MLA | He, Xia,et al."Tribological behavior of femtosecond laser textured surfaces of 20CrNiMo/beryllium bronze tribo-pairs".ind. lubr. tribol. 67.6(2015):630. |
入库方式： OAI收割
来源：上海光学精密机械研究所
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