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结合某军品项目进行研究,对激光快速成型预烧结喷管件进行高温烧结和还原气氛二步烧结试验,测试制件的各项性能,确定此喷管件是否有进行还原气氛二步烧结的必要,并对Mo粉末高温烧结机理进行理论分析,探讨高温烧结改善坯体性能的原因。试验表明,经过还原气氛二步烧结的结构件才能达到某喷管的性能要求,还原气氛二步烧结是必要的,且高温烧结理论分析解释了这一原因。
Combined with a military project, the laser rapid prototyping pre-sintered nozzle is subjected to high-temperature sintering and reducing atmosphere two-step sintering test to test the properties of the workpiece to determine whether this nozzle has the need of two-step sintering in reducing atmosphere The mechanism of high temperature sintering of Mo powder was theoretically analyzed to discuss the reason of high temperature sintering to improve the performance of the green body. Experiments show that the structure of the two-step sintering after reducing atmosphere can meet the performance requirements of a nozzle. The two-step sintering of reducing atmosphere is necessary, and the theoretical analysis of high-temperature sintering explains this reason.