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Materials and Manufacturing Processes Volume 31, 2016 - Issue 11
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Original Articles

Fabrication of Co-Based Coatings on Titanium Alloy by Laser Cladding with CeO2 Addition

Fei WengSuzhou Institute, Shandong University, Ji'nan, China;Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Department of Materials Science and Engineering, Shandong University, Ji'nan, Shandong, China
,
Huijun YuSuzhou Institute, Shandong University, Ji'nan, China;Key Laboratory of High-efficiency and Clean Mechanical Manufacture (Ministry of Education), School of Mechanical Engineering, Shandong University, Ji'nan, Shandong, ChinaCorrespondence[email protected] [email protected]
,
Chuanzhong ChenSuzhou Institute, Shandong University, Ji'nan, China;Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Department of Materials Science and Engineering, Shandong University, Ji'nan, Shandong, ChinaCorrespondence[email protected] [email protected]
,
Jianli LiuSuzhou Institute, Shandong University, Ji'nan, China;Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Department of Materials Science and Engineering, Shandong University, Ji'nan, Shandong, China
,
Longjie ZhaoSuzhou Institute, Shandong University, Ji'nan, China;Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Department of Materials Science and Engineering, Shandong University, Ji'nan, Shandong, China
&
Jingjie DaiSuzhou Institute, Shandong University, Ji'nan, China;Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Department of Materials Science and Engineering, Shandong University, Ji'nan, Shandong, China;School of Mechanical and Electronic Engineering, Qingdao Binhai University, Qingdao, China
Pages 1461-1467 | Received 29 Nov 2015, Accepted 16 Dec 2015, Published online: 09 May 2016
 
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Abstract

In this study, Co-based laser cladding coatings reinforced by multiple phases were fabricated on titanium alloy. Co42 Co-based self-fluxing alloy, B4C, and CeO2 mixed powders were used as the precursor materials. The coatings were mainly composed of γ-Co/Ni, CoTi2, CoTi, NiTi, TiC, Cr7C3, TiB2, and TiB phases. A typical TiB2/Cr7C3/TiC composite structure was chosen. It was found that CeO2 did not influence the phase types of the coating significantly, but was effective in refining the microstructure and enhancing the microhardness and dry sliding wear resistance. Compared with the Ti-6Al-4V titanium alloy, the microhardness and wear resistance of the composite coatings were enhanced by 3.44–4.21 times and 14.26–16.87 times, respectively.

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