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Densification behavior of Mo nanopowders prepared by mechanochemical processing

机译:机械化学法制备钼纳米粉的致密化行为

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摘要

The sintering behavior of molybdenum (Mo) nanopowder was investigated in comparison to that of commercial Mo powder. At a sintering temperature of 1400 deg C, the relative density of Mo nanopowder (94 percent) was found to be higher than that of commercial powder (74 percent). In samples of the same relative density, the measured hardness values were 2.34 GPa for nanopowder and 1.87 GPa for commercial powder. The sintered Mo nanopowder exhibited greater hardness compared with the commercial powders. The sintering mechanism and hardness are discussed based on the linear shrinkage behavior and observed microstructural characteristics.
机译:与商用钼粉相比,研究了钼(Mo)纳米粉的烧结行为。在1400摄氏度的烧结温度下,发现Mo纳米粉的相对密度(94%)高于商业粉末的相对密度(74%)。在相同相对密度的样品中,测得的硬度值对于纳米粉末为2.34 GPa,对于商业粉末为1.87 GPa。与市售粉末相比,烧结的Mo纳米粉末显示出更高的硬度。基于线性收缩行为和观察到的微观结构特征,讨论了烧结机理和硬度。

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