首页>
外国专利>
FUNCTIONALIZED METAL POWDERS BY SMALL PARTICLES MADE BY NON-THERMAL PLASMA GLOW DISCHARGE FOR ADDITIVE MANUFACTURING APPLICATIONS
FUNCTIONALIZED METAL POWDERS BY SMALL PARTICLES MADE BY NON-THERMAL PLASMA GLOW DISCHARGE FOR ADDITIVE MANUFACTURING APPLICATIONS
展开▼
机译:非热等离子体辉光放电制成的小颗粒功能金属粉末在制造中的应用
展开▼
页面导航
摘要
著录项
相似文献
摘要
The present invention discloses a non-thermal plasma treatment of metal powders in order to improve their processability by additive manufacturing (AM). The invention consists in bonding primary particles constituted of metals or metal alloys to a plurality of secondary particles constituted of metals, metal alloys, ceramics or polymers by the mean of a non-thermal plasma treatment. The primary particles have a larger mean diameter than the secondary. Both particles are injected through a non-thermal plasma glow discharge and/or in its afterglow region (region downstream the plasma discharge) where their surfaces are cleaned by removing contaminants and/or oxide layer and activated to react between each other. The functionalized metal powders are then collected and afterwards processed by AM leading to high quality parts. The functionalized metal powders produced by this plasma treatment improve the processability of metal by AM. Indeed, decreasing the reflectivity, removing contaminant and oxide layer, enhancing the isotropic solidification of melted materials and decreasing the sintering temperature enhance the efficiency of powder based AM processes.
展开▼