DOI:10.3969/j.issn.1009-3842.2025.01.011
铜业工程:2025(1):104-111
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Y2O3改性WC-Co基涂层高温磨损性能的研究
刘日新1, 罗显芝1, 尹凯真2, 孙云龙3, 黄雨4, 刘德武1, 许杰1, 彭文屹2
(1. 江西铜业股份有限公司德兴铜矿，江西 德兴 334224;2. 南昌大学物理与材料学院，江西 南昌 330031;3. 江西铜业技术研究院有限公司，江西 南昌 330096;4. 江西德普矿山设备有限公司，江西 上饶 334604)
Effect of Y2O3 on High-Temperature Wear Resistance of Plasma Cladding WC-Modified Co-Based Coating
LIU Rixin1, LUO Xianzhi1, YIN Kaizhen2, SUN Yunlong3, HUANG Yu4, LIU Dewu1, XU Jie1, PENG Wenyi2
(1. Dexing Copper Mine， Jiangxi Copper Co.， Ltd.， Dexing 334224， China；2. School of Physics and Materials，Nanchang University， Nanchang 330031， China；3. Jiangxi Copper Technology Institute Co.， Ltd.， Nanchang 330096， China；4. Jiangxi Depu Mining Equipment Co.， Ltd.， Shangrao 334604， China)
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投稿时间：2024-05-16    修订日期：2024-09-14
中文摘要: 本文研究了添加不同质量分数 Y2O3（0%，0.2%，0.6%，1%）对等离子熔覆 WC-Co基（含 40% WC）涂层组织和性能的影响。结果表明，Y2O3改性涂层主要由γ-Co相、FeNi相、Cr23C6相以及含W相构成。随着Y2O3质量分数的逐步增加，涂层的微观组织先细化后粗化，涂层的平均显微硬度先增大后减小，涂层的高温（600 ℃）耐磨性能先上升后下降。当Y2O3质量分数为0.6%时，涂层的显微硬度与耐磨性最好［显微硬度为HV 996，磨损率为(2.06×10-5) mm3/(N·m)］，相较未添加Y2O3的涂层，磨损率降低了34.8%。对含有不同质量分数Y2O3的WC-Co基涂层的高温磨损机制分析表明，适量添加Y2O3可降低WC-Co基涂层的氧化磨损和粘着磨损。
中文关键词: 等离子熔覆  Y2O3  WC-Co基涂层  高温磨损性能  显微组织
Abstract:In this paper, the effects of adding different mass fraction of Y2O3 (0%, 0.2%, 0.6%, 1%) on microstructure and properties of plasma-melted WC-Co-based coatings (containing 40% WC) were investigated. The results showed that Y2O3 modified coatings were mainly composed of γ-Co phase, FeNi phase, Cr23C6 phase, and W-containing phase. With the gradual increase of Y2O3 mass fraction, the microstructure of the coating is first refined and then coarsened, the average microhardness of the coating is first increased and then decreased, and the high-temperature (600 ℃) wear resistance of the coating is first increased and then decreased. When Y2O3 mass fraction was 0.6%, the best microhardness and wear resistance of the coating was obtained: the microhardness was HV 996 and the wear rate was 2.06 × 10-5 mm3/(N·m), which was 34.8% lower than that of the coating with 0% Y2O3 added. The analysis of the high-temperature wear mechanisms of WC-Co-based coatings with different mass fraction of Y2O3 showed that moderate addition of Y2O3 could reduce the oxidative and adhesive wear of WC-Co-based coatings.
keywords: plasma cladding  Y2O3  WC-Co-based coating  high-temperature wear resistance  microstructure
文章编号：20240516001     中图分类号：TG17；TG13
基金项目:国家自然科学基金项目（52301014）；江西省重点研发项目（20212BBE53043）
引用文本： 刘日新,罗显芝,尹凯真,孙云龙,黄雨,刘德武,许杰,彭文屹.Y2O3改性WC-Co基涂层高温磨损性能的研究[J].铜业工程,2025,(1):104-111