Abstract The new melting curve of cobalt (Co) was determined to be 12 GPa using the in situ high-pressure temperature measurement method (HPTM) in a high-volume cubic press using two melting criteria: first, plateaus in the temperature vs power functions in situ experiments, and second, the texture changes in the samples before and after high-pressure high-temperature (HP-HT) treatments with a scanning electron microscope (SEM). The slope of the melting point with increasing pressure was approximately 33 K/GPa in our experimental pressure range and progressively decreased under further compression. Our new melting curve of Co under high pressure is reasonably consistent with the simulation results using one-phase and two-phase calculations and has a similar trend with the reported melting curves of Fe and Ni.

中文翻译：

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钴在高压下的熔化曲线

摘要 钴 (Co) 的新熔化曲线被确定为 12 GPa 使用原位高压温度测量方法 (HPTM) 在大容量立方压机中使用两个熔化标准：首先，温度与功率函数的平台原位实验，其次，用扫描电子显微镜（SEM）进行高压高温（HP-HT）处理前后样品的织构变化。在我们的实验压力范围内，随着压力增加，熔点的斜率约为 33 K/GPa，并在进一步压缩下逐渐降低。我们在高压下新的 Co 熔化曲线与使用单相和两相计算的模拟结果相当一致，并且与报道的 Fe 和 Ni 熔化曲线具有相似的趋势。