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Preparation and characterization of laser cladded FeCrMoBSi amorphous composite coatings
Department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
Li, Keyao1,2; Liang, Jun1; Zhou, Jiansong1
The second department金属基高温润滑材料组
2021-10-15
Source PublicationSurface & Coatings Technology
Issue423Pages:1-12
Abstract

In order to study the effect of Cr content on the glass forming ability (GFA) and mechanical properties of Fe-based amorphous composite coatings, and to prepare the Fe-based amorphous composite coatings with high hardness and wear resistance. Fe-Cr-Mo-B-Si amorphous composite coatings were prepared by laser cladding technology with different Fe to Cr ratio. The phase composition and microstructure were studied by X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive spectroscopy (EDS) and transmission electron microscope (TEM) techniques. Vickers indenter, nano-indentor and friction testing machine were used to investigate the mechanical properties and wear resistance of the amorphous coatings. The XRD patterns results show that the phase composition and the content of amorphous changed obviously, and the microstructure transformed clearly from equiaxed dendrite structure to the mixed structure of crystal and amorphous with the content of Cr increases in a restriction range. It was found that the coating showed the best glass forming ability (GFA) when the Fe to Cr ratio was 0.33. The coating was mainly composed of Fe-based solid solution, amorphous and a small number of intermetallic compounds. Appropriate content of Cr can effectively inhibit the formation of intermetallic compounds and decrease the effect of dendrite orientation growth. The high amorphous content makes the coating exhibit excellent microhardness (1200 HV) and wear resistance (2.7 × 10􀀀 6 mm3/ (Nm)). At this time, slight abrasive wear is the mainly wear mechanism of Fe-based amorphous composite coatings with the elements component of Fe43.55Cr21.45Mo15B10Si10 (atm. %) at room temperatures.

KeywordLaser cladding Properties Fe-based amorphous coating Microstructure Wear
DOI10.1016/j.surfcoat.2021.127520
Indexed BySCI
If4.158
Language英语
compositor第一作者单位
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.licp.cn/handle/362003/27770
Collection固体润滑国家重点实验室(LSL)
Corresponding AuthorZhou, Jiansong
Affiliation1.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences
2.Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Li, Keyao,Liang, Jun,Zhou, Jiansong. Preparation and characterization of laser cladded FeCrMoBSi amorphous composite coatings[J]. Surface & Coatings Technology,2021(423):1-12.
APA Li, Keyao,Liang, Jun,&Zhou, Jiansong.(2021).Preparation and characterization of laser cladded FeCrMoBSi amorphous composite coatings.Surface & Coatings Technology(423),1-12.
MLA Li, Keyao,et al."Preparation and characterization of laser cladded FeCrMoBSi amorphous composite coatings".Surface & Coatings Technology .423(2021):1-12.
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