Influence of Al2O3 particles on the tribological properties of CoCrAlYTa coating produced by laser-induction hybrid cladding. Issue 14 (15th July 2021)

• Record Type: Journal Article
• Authors: Yanliang, Yi; Shaolei, Long; Rui, Zhang; Changyi, Wu; Shengfeng, Zhou
• Is Part Of: Ceramics international. Volume 47:Issue 14(2021)
• Page Start: 19434
• Page End: 19442
• Publication Date: 2021-07-15
• Subjects: Laser-induction hybrid cladding -- MCrAlY coating -- Friction and wear -- Tribological property; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2021.03.280
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: The influence of Al2 O3 addition on the microstructure, mechanical and tribological properties of CoCrAlYTa coating produced by laser-induction hybrid cladding was systematically investigated. The results show that the coatings exhibit high metallurgy quality with no obvious defects, and mainly consist of γ, β and TaC phases. In the cladding process, a part of O element exists in the TaC and increases with the increased Al2 O3 content, while the other exists in the form of Y2 O3 due to low Gibbs free energy. As the Al2 O3 content increases, the volume fraction of β phase ( V β ) changes from 23.82 vol% to 67.72 vol%, and leading to the microhardness of coating increased from 515.15 HV to 610.17 HV. Meanwhile, the wear rate of coating increases with the V β in a relationship of y = −5.97 x +110.65, due to a fact that the wear mechanism changes from adhesive wear to microcutting.