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首页> 外文会议>Materials Science Technology Conference and Exhibition >CAVITATION EROSION, SLURRY EROSION AND SOLID PARTICLE EROSION PERFORMANCE OF METAL MATRIX COMPOSITE (MMC) COATINGS SPRAYED WITH MODERN HIGH VELOCITY THERMAL SPRAY PROCESSES
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CAVITATION EROSION, SLURRY EROSION AND SOLID PARTICLE EROSION PERFORMANCE OF METAL MATRIX COMPOSITE (MMC) COATINGS SPRAYED WITH MODERN HIGH VELOCITY THERMAL SPRAY PROCESSES

机译：金属基质复合材料（MMC）涂层的空化糜烂，浆料腐蚀和固体颗粒腐蚀性能，用现代高速热喷涂工艺喷涂

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Thermally sprayed metal-matrix composite (MMC) coatings are widely used to protect components and surfaces against wear in various applications. Hard and wear resistant coatings increase the component lifetime and allow the refurbishment of the worn components. This produces significant savings and promotes ecological manufacturing. The current state-of-the-art coatings are produced with high velocity oxygen-fuel (HVOF) spray processes, while modern high velocity air-fuel (HVAF) spray process has become increasingly available in production and research. The current study focuses on the performance of tungsten carbide (WC-10Co4Cr) and chromium carbide (Cr_3C_2-25NiCr) based MMC coatings sprayed with gaseous and liquid fuelled HVOF processes and a modern HVAF spray process. Two powder feedstock types, i.e. dense particles with fine carbides and porous particles with coarse carbides, were selected for both compositions. The results show significant improvements especially for WC-10Co4Cr coatings sprayed with HVAF when compared to HVOF sprayed coatings. In addition, Cr_3C_2-25NiCr coatings sprayed from the dense powder resulted in improved wear resistance compared to conventional feedstock powder.
机译：热喷涂的金属 - 基质复合物（MMC）涂层广泛用于保护各种应用中的组件和表面造成磨损。坚硬耐磨涂层增加了部件寿命并允许翻新磨损的部件。这产生了显着的储蓄和促进生态制造业。目前最先进的涂料具有高速氧气 - 燃料（HVOF）喷涂工艺，而现代高速空气燃料（HVAF）喷涂过程越来越多地提供生产和研究。目前的研究侧重于碳化钨（WC-10CO4CR）和碳化铬（CR_3C_2-25NICR）的MMC涂层的性能，喷洒气态和液体加油HVOF工艺和现代HVAF喷雾过程。为两种组合物选择两个粉末原料类型，即用细碳化物和具有粗碳化物的多孔颗粒的致密颗粒。与喷涂涂层相比，该结果特别适用于用HVAF喷涂的WC-10CO4CR涂层的显着改进。另外，与常规原料粉末相比，从致密粉末喷射的CR_3C_2-25NICR涂层导致耐磨性改善。

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