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 Publication | Surface & Coatings Technology |
Issue | 423Pages: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. |
Keyword | Laser cladding Properties Fe-based amorphous coating Microstructure Wear |
DOI | 10.1016/j.surfcoat.2021.127520 |
Indexed By | SCI |
If | 4.158 |
Language | 英语 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/27770 |
Collection | 固体润滑国家重点实验室(LSL) |
Corresponding Author | Zhou, Jiansong |
Affiliation | 1.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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李珂尧.pdf(6058KB) | 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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