Direct high-speed micro video recording data proved the existence of highly overheated zones at contacts of powder particles through which electric current pulses about 1 ms long were sent. The overheating might exceed 1600 K and could give rise to liquid-phase sintering necks, the sizes of which correlated well with the sizes of the overheated zones. Temperature field microheterogeneities during electric pulse heating of the powder medium gave an insight into unusually high rates of consolidation of powder materials during spark plasma sintering.

中文翻译：

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钛粉电脉冲固结过程中颗粒与颗粒接触过程的直接观察

直接高速微视频记录数据证明粉末颗粒接触处存在高度过热区域，通过该区域发送约 1 ms 长的电流脉冲。过热可能超过 1600 K，并可能产生液相烧结颈，其尺寸与过热区的尺寸相关。粉末介质电脉冲加热过程中的温度场微观不均匀性让我们深入了解放电等离子体烧结过程中粉末材料的异常高固结率。