[1]苏静雨,蔡洪能,雷逸舟,等.高速条件下的减摩耐磨涂层制备[J].中国材料进展,2020,(10):769-775.[doi:10.7502/j.issn.1674-3962.201905039]
 SU Jingyu,CAI Hongneng,LEI Yizhou,et al.Preparation of Anti-Friction and Wear-Resistant Coating at High Speed[J].MATERIALS CHINA,2020,(10):769-775.[doi:10.7502/j.issn.1674-3962.201905039]
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高速条件下的减摩耐磨涂层制备()
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中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

卷:
期数:
2020年第10期
页码:
769-775
栏目:
出版日期:
2020-10-30

文章信息/Info

Title:
Preparation of Anti-Friction and Wear-Resistant Coating at High Speed
文章编号:
1674-3962(2020)10-0769-07
作者:
苏静雨蔡洪能雷逸舟魏志远
(西安交通大学 金属材料强度国家重点实验室,陕西 西安 710049)
Author(s):
SU Jingyu CAI Hongneng LEI Yizhou WEI Zhiyuan
(State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China)
关键词:
高超声速超音速火焰喷涂减摩耐磨涂层NiCrCr3C2高温
Keywords:
hypersonic high velocity oxygen fuel(HVOF) spraying anti-friction and wear-resistant coating NiCr-Cr3C2 high temperature
分类号:
TG174.44
DOI:
10.7502/j.issn.1674-3962.201905039
文献标志码:
A
摘要:
工件在高速条件下工作时,由于同时受到摩擦磨损和高温的作用,会对其造成十分严重的损伤。针对在高速条件下工作的摩擦副,借助超音速火焰喷涂技术制备了含Ni包MoS2的Ni-25MoS2/NiCr-Cr3C2减摩耐磨涂层,以期提高工件接触表面的耐磨损性能,减小工件表面的摩擦因数,延缓工件基体表面的升温速率。通过三因素三水平正交试验计算出了最优喷涂工艺参数,包括送粉速率、O2流速、C3H8流速。对所获得的减摩耐磨涂层进行扫描电镜观察和X射线衍射分析,观察不同Ni包MoS2含量涂层的显微形貌,统计不同Ni包MoS2含量涂层的孔隙率,分析确定不同Ni包MoS2含量涂层的成分。最后,结合摩擦磨损试验,分析不同Ni包MoS2含量对Ni-25MoS2/NiCr-Cr3C2涂层减摩耐磨性能的影响,从而得到性能优异的减摩耐磨涂层。
Abstract:
When the workpiece is working under high-speed conditions, it will suffer serious damage due to the effect of friction, wear and high temperature. Aiming at the friction pairs working under highspeed conditions, Ni-25MoS2/NiCr-Cr3C2 anti-friction and wear-resistant coatings containing Ni-coated MoS2 were prepared by means of high velocity oxygen fuel (HVOF) spraying technology, in order to improve the wear resistance of the contact surface of the workpiece, reduce the friction coefficient of the workpiece surface and delay the temperature rise of the substrate surface. In this paper, the optimum spraying process parameters were calculated by the orthogonal test method with three factors and three levels, including powder feeding rate, oxygen flow rate and the fuel C3H8 flow rate. The anti-friction and wear-resistant coatings were observed by SEM and X-ray diffraction analysis. The micro-morphology of the coatings with different Nicoated MoS2 content was observed, the porosity of the coatings was counted, and the composition of the coatings was determined after analysis. Finally, according to the friction and wear tests result, the effect of different Nicoated MoS2 content on the friction and wear resistance of Ni-25MoS2/NiCr-Cr3C2 coatings was analyzed, and the excellent anti-friction and wear coatings were prepared.

备注/Memo

备注/Memo:
收稿日期:2019-05-31修回日期:2019-10-28 第一作者:苏静雨,女,1994年生,硕士研究生通讯作者:蔡洪能,男,1967年生,教授,博士生导师, Email: hntsai@mail.xjtu.edu.cn
更新日期/Last Update: 2020-10-11