Geng Xie , Bin Zhang , Hailong Liu , Dongqun Xin , Yan Cai , Weidong Mu
{"title":"HVOF法同时增强纳米ceo2改性多尺度WC-10Co-4Cr涂层的硬度和韧性","authors":"Geng Xie , Bin Zhang , Hailong Liu , Dongqun Xin , Yan Cai , Weidong Mu","doi":"10.1016/j.matlet.2025.138418","DOIUrl":null,"url":null,"abstract":"<div><div>This study presents a novel design strategy for enhancing performance of WC-10Co-4Cr coatings by incorporation of nano-CeO<sub>2</sub> into multi-scale WC particles, applied via high-velocity oxygen fuel (HVOF) spraying. The aim is to concurrently improve hardness and toughness, addressing trade-off typically observed in these coatings. Four types of coatings were prepared: submicrostructured, nanostructured, multi-scale, and nano-CeO<sub>2</sub>-modified multi-scale coatings. The results demonstrated that multi-scale coating, particularly when modified with nano-CeO<sub>2</sub>, exhibited superior hardness and fracture toughness compared to conventional micron or nano-structured coatings. Addition of nano-CeO<sub>2</sub> effectively inhibited decarburization during HVOF process, reducing formation of brittle W<sub>2</sub>C phases and lowering porosity. This led to a more uniform distribution of WC particles and enhanced interfacial bonding, resulting in a denser and more resilient coating structure. Nano-CeO<sub>2</sub>-modified multi-scale coating achieved an optimal balance between hardness and toughness, offering a promising pathway for development of high-performance WC-Co(Cr) coatings for demanding industrial applications.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"390 ","pages":"Article 138418"},"PeriodicalIF":2.7000,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Simultaneous enhancement of hardness and toughness of nano-CeO2 modified multi-scale WC-10Co-4Cr coating via HVOF\",\"authors\":\"Geng Xie , Bin Zhang , Hailong Liu , Dongqun Xin , Yan Cai , Weidong Mu\",\"doi\":\"10.1016/j.matlet.2025.138418\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study presents a novel design strategy for enhancing performance of WC-10Co-4Cr coatings by incorporation of nano-CeO<sub>2</sub> into multi-scale WC particles, applied via high-velocity oxygen fuel (HVOF) spraying. The aim is to concurrently improve hardness and toughness, addressing trade-off typically observed in these coatings. Four types of coatings were prepared: submicrostructured, nanostructured, multi-scale, and nano-CeO<sub>2</sub>-modified multi-scale coatings. The results demonstrated that multi-scale coating, particularly when modified with nano-CeO<sub>2</sub>, exhibited superior hardness and fracture toughness compared to conventional micron or nano-structured coatings. Addition of nano-CeO<sub>2</sub> effectively inhibited decarburization during HVOF process, reducing formation of brittle W<sub>2</sub>C phases and lowering porosity. This led to a more uniform distribution of WC particles and enhanced interfacial bonding, resulting in a denser and more resilient coating structure. Nano-CeO<sub>2</sub>-modified multi-scale coating achieved an optimal balance between hardness and toughness, offering a promising pathway for development of high-performance WC-Co(Cr) coatings for demanding industrial applications.</div></div>\",\"PeriodicalId\":384,\"journal\":{\"name\":\"Materials Letters\",\"volume\":\"390 \",\"pages\":\"Article 138418\"},\"PeriodicalIF\":2.7000,\"publicationDate\":\"2025-03-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materials Letters\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0167577X25004471\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Letters","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0167577X25004471","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Simultaneous enhancement of hardness and toughness of nano-CeO2 modified multi-scale WC-10Co-4Cr coating via HVOF
This study presents a novel design strategy for enhancing performance of WC-10Co-4Cr coatings by incorporation of nano-CeO2 into multi-scale WC particles, applied via high-velocity oxygen fuel (HVOF) spraying. The aim is to concurrently improve hardness and toughness, addressing trade-off typically observed in these coatings. Four types of coatings were prepared: submicrostructured, nanostructured, multi-scale, and nano-CeO2-modified multi-scale coatings. The results demonstrated that multi-scale coating, particularly when modified with nano-CeO2, exhibited superior hardness and fracture toughness compared to conventional micron or nano-structured coatings. Addition of nano-CeO2 effectively inhibited decarburization during HVOF process, reducing formation of brittle W2C phases and lowering porosity. This led to a more uniform distribution of WC particles and enhanced interfacial bonding, resulting in a denser and more resilient coating structure. Nano-CeO2-modified multi-scale coating achieved an optimal balance between hardness and toughness, offering a promising pathway for development of high-performance WC-Co(Cr) coatings for demanding industrial applications.
期刊介绍：
Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review.
Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials.
Contributions include, but are not limited to, a variety of topics such as:
• Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors
• Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart
• Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction
• Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots.
• Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing.
• Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic
• Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive
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