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Low Temperature Microwave and Vacuum Sintering of Sputter Coated 316L Powders

机译:溅射涂覆的316L粉末的低温微波和真空烧结

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Microwave (MW) sintering can be an efficient, economic and valuable approach for the processing of some PM parts. Previous work with powder particles' surface modification via sputter deposition of nanometric layers, showed that not only interparticle friction decreases (facilitating die filling), but also powders' reactivity is enhanced, increasing their sinterability. Low temperature sintering cycles were performed on uniaxially compacted specimens of 316L powder blends with and without coating, at 950 and 1000°C in both 2.45 GHz-1000 W MW oven and vacuum furnace. Low temperature cycles revealed the nanometric layer effect on sintering behaviour when compared to uncoated powders.
机译:微波烧结是处理某些粉末冶金零件的一种有效,经济和有价值的方法。先前通过溅射沉积纳米层对粉末颗粒进行表面改性的工作表明,不仅颗粒间的摩擦减小(有利于模具填充),而且粉末的反应性得到增强,从而提高了可烧结性。在2.45 GHz-1000 W MW烤箱和真空炉中,在950和1000°C下,对有和没有涂层的316L粉末混合物的单轴压实样品进行低温烧结循环。与未涂覆的粉末相比,低温循环揭示了纳米层对烧结行为的影响。

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