ABSTRACT We tested boron-doped diamond (BDD) synthesized by chemical vapor deposition (CVD) as a heating element in a multi-anvil apparatus. We succeeded in manufacturing BDD into a tubular shape by laser cutting and electric discharging machining. The BDD tube shaped by the electric discharging machining was contaminated by discharging electrode materials (Mo and W), which affected the heating performance. The laser-cut BDD tube has a clean surface and, therefore, had a good heating performance. We succeeded in generating temperature as high as 2670 K at a pressure around 30 GPa with laser-cut heater. Heating reproducibility was confirmed through repeated heating and cooling cycles. The recovered sample shows that a higher temperature generation above 2670 K was prevented by eutectic melting of ZrO2 thermal insulator and Al2O3 sample. Owing to the commercial availability with a reasonable price, CVD–BDD heaters are more practical than a high-pressure synthesized BDD heaters for wide applications.

中文翻译：

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通过化学气相沉积合成的掺硼金刚石作为多砧装置中的加热元件

摘要 我们测试了通过化学气相沉积 (CVD) 合成的掺硼金刚石 (BDD) 作为多砧装置中的加热元件。我们通过激光切割和放电加工成功地将 BDD 制成管状。放电加工成型的BDD管被放电电极材料（Mo和W）污染，影响加热性能。激光切割的 BDD 管表面干净，因此具有良好的加热性能。我们成功地使用激光切割加热器在 30 GPa 左右的压力下产生了高达 2670 K 的温度。通过重复加热和冷却循环确认加热重现性。回收的样品表明，ZrO2 绝热体和 Al2O3 样品的共晶熔化阻止了高于 2670 K 的更高温度的产生。