Improving the Elevated Temperature Wear and Oxidation Resistance of Laser Clad (CoCrFeNi)₈₀Mo_{15−x}W_{x}Si₅ Coatings by the Synergistic Variation of Mo and W Elements

Guosong Zhang; Xintong Wang; Licui Han; Yuehui Sun; Di Jiang; Haixia Wang; Xiaojie Song; Na Wei

doi:10.1002/adem.202402548

journal article·2025-09

Improving the Elevated Temperature Wear and Oxidation Resistance of Laser Clad (CoCrFeNi)₈₀Mo_15−xW_xSi₅ Coatings by the Synergistic Variation of Mo and W Elements

Guosong Zhang, Xintong Wang, Licui Han, Yuehui Sun, Di Jiang, Haixia Wang, Xiaojie Song, Na Wei

Advanced Engineering Materials· Volume 27· Issue 18

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Source abstract

Abstract

In order to extend the operation life of the piercing plug, (CoCrFeNi)₈₀Mo_15−xW_xSi₅ (x = 4, 8, 12 at%) HEA coatings are designed and prepared on 20CrNi3 steel surface by laser cladding. The effect of synergistic changes in the content of Mo and W elements microstructure, phase composition, mechanical properties, oxidation resistance, and wear resistance of the coatings is analyzed. The result shows that the coatings exhibit a three‐phase structure encompassing FCC + μ + Mo–Si compounds. With the increase of the ratio of W to Mo element, μ phases (Fe₇W₆, Co₇Mo₆, Co₇W₆) increase. However, the Mo–Si compound decreases with the (111) peak of the FCC phase shifting slightly to the left. The hardness and H/E and H³/E² all increased with the increase of the ratio of W to Mo element, but the W_xSi_y mixtures increase. Compared with the substrate, the coatings show a better elevated temperature oxidation resistance since a dense oxide film is formed on the surface. When the ratio of W to Mo element reaches 8:7, the coating presents the best ordinary and elevated temperature wear performance with a low coefficient of friction and wear volume loss. In contrast, the W₁₂ coating shows a worse wear performance because the W_xSi_y peels off during the wear process and exacerbates the wear of the W₁₂ coating.

Source: crossref · Quality: baseline

Research context

Metals & alloys

OpenAlex topics: High Entropy Alloys Studies · High-Temperature Coating Behaviors · Additive Manufacturing Materials and Processes

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Mechanical and Electronic Engineering Shandong University of Science and Technology Qingdao 266590 China

School of Materials Science and Engineering Shandong University of Science and Technology Qingdao 266590 China

Funding

National Natural Science Foundation of China · China Postdoctoral Science Foundation

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