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Thermally-Sprayed WC-Based Cermet Coatings for Corrosion Resistance Applications

机译:用于耐腐蚀应用的热喷涂的WC基金属陶瓷涂料

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摘要

Thermally-sprayed tungsten carbide (WC)-based cermet coatings have been widely used for a large variety of wear resistance applications. More recently, these coatings are being used as an alternative to hard chrome plating, especially in the aerospace and automotive industries. Utilizing the automated spray systems and the commercial availability of spray grade powders with different compositions, the WC-based cermet coatings that are conventionally used for wear protection are now being extended for simultaneous corrosion protection. Therefore, the corrosion behavior of various WC-based cermet coatings as a function of matrix composition, feedstock type and deposition technique exposed to a variety of corrosion mediums has been critically reviewed. The corrosion mechanisms of WC-based cermet coatings studied using various analytical tools have also been comprehensively discussed. The interrelationship between the microstructural integrity and the corrosion behavior has been critically assessed. Further, the influence of pre- and post-treatments to improve the overall corrosion resistance of the coatings has also been highlighted.
机译:基于热喷涂的碳化钨(WC)的金属陶瓷涂料已广泛用于各种耐磨性应用。最近,这些涂层被用作硬铬镀层的替代品,特别是在航空航天和汽车工业中。利用自动化喷雾系统和具有不同组成的喷雾级粉末的商业可用性,现在延长了常规用于磨损保护的WC基金属陶瓷涂层以同时腐蚀保护。因此,作为基质组合物的函数,暴露于各种腐蚀介质的原料型和沉积技术的各种基于WC的金属陶瓷涂层的腐蚀行为已经受到严重回顾。讨论了使用各种分析工具研究的基于WC的金属陶瓷涂层的腐蚀机制。微观结构完整性与腐蚀行为之间的相互关系已经严重评估。此外,还突出了前后处理改善涂层整体腐蚀性的影响。

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  • 来源
    《JOM》 |2018年第11期|共14页
  • 作者单位

    International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI);

    International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI);

    International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI);

    International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI);

    International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI);

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 有色金属冶炼;金属学与金属工艺;
  • 关键词

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