文献类型：期刊文献

中文题名：VC增强激光熔覆AlCoCrFeNi高熵合金涂层的耐磨及耐腐蚀性能研究

英文题名：Wear Behavior and Corrosion Resistance of Laser Cladded AlCoCrFeNi High Entropy Alloy Coatings Enhanced with VC

作者：李树发[1,2];占雪萌[1];李昕诺[1];黄江[1,2];师文庆[3]

机构：[1]广东海洋大学电子与信息工程学院,广东湛江524088;[2]广东海洋大学广东省南海海洋牧场智能装备重点实验室,广东湛江524088;[3]广东海洋大学材料科学与工程学院,广东阳江529500

年份：2026

卷号：55

期号：7

起止页码：163

中文期刊名：热加工工艺

外文期刊名：Hot Working Technology

收录：北大核心2023、、北大核心

基金：广东省普通高校重点领域专项项目(2020ZDZX2061);广东省科技专项资金项目(SDZX2023004);阳江市合金材料与五金刀剪重点产业人才振兴计划专项资金项目(RCZX2024012);广东省南海海洋牧场智能装备重点实验室资助课题(2023B1212030003)。

语种：中文

中文关键词：高熵合金;激光熔覆;耐磨性;耐腐蚀性;VC

外文关键词：high entropy alloy;laser cladding;wear resistance;corrosion resistance;VC

中文摘要：采用激光熔覆技术在Q235B钢材上制备了Al CoCrFeNi+xwt%VC(x=0,6,9)高熵合金复合涂层。通过配备能谱仪的扫描电子显微镜、X射线衍射仪、维氏硬度计、电化学工作站及摩擦磨损试验机,系统分析了涂层的微观结构、物相组成、显微硬度、耐磨性能及耐腐蚀性能。结果表明:VC的添加使涂层从单一BCC相结构转变为BCC+FCC双相共存结构,并诱导晶格畸变和晶粒细化。Al CoCrFeNi涂层的硬度显微硬度约是基材的3.6倍。添加VC后,涂层的硬度变化不大,耐磨性能显著增强,耐腐蚀性能得到有效提升。随着VC含量的增加,涂层的腐蚀电压增大,腐蚀电流密度降低。当添加9%VC时,涂层表现出最优的耐磨性能,其磨损率比未添加VC的涂层降低66.5%,涂层的腐蚀电压最高、腐蚀电流密度最低,表现出最佳的耐腐蚀性。本研究为提高Al CoCrFeNi高熵合金涂层的耐磨性能与耐腐蚀性能提供了试验支撑。

外文摘要：AlCoCrFeNi+xwt%VC(x=0,6,9)high entropy alloy composite coatings were prepared on Q235B steel substrate by laser cladding technique.The microstructure,phase,microhardness,wear resistance and corrosion resistance of the coatings were systematically investigated by scanning electron microscope,energy dispersive spectrometer,X-ray diffraction(XRD),Vickers hardness tester,electrochemical workstation,and friction and wear tester.The results show that the addition of VC causes the phase composition of the coating to transform from a single BCC phase structure to the BCC-FCC dual-phase coexistence structure,inducing lattice distortion and grain refinement.And the hardness of the AlCoCrFeNi coatings is about 3.6 times of that of the substrate.After adding VC,the hardness of the coating changes little,the wear resistance of the coating is significantly enhanced,and its corrosion resistance is effectively improved.With the increase of VC content,the corrosion voltage of the coating gets higher,and the corrosion current density gets lower.When 9%VC is added,the coating exhibits the best wear resistance,with a the rate is 66.5%lower than that of the coating without VC.The coating also has the highest corrosion voltage and the lowest corrosion current density,demonstrating the best corrosion resistance.This study provides experimental support for improving the wear resistance and corrosion resistance of AlCoCrFeNi high-entropy alloy coatings.