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一种适用于极端高温条件的六面顶压机实验组装

DOI: 10.11858/gywlxb.2014.02.003, PP. 145-151

Keywords: 六面顶压机,实验组装设计,高温稳定性,热电偶布局

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Abstract:

参考活塞-圆筒高压设备常用的实验组装中热电偶的布局方式,设计了一种适用于极端高温条件的六面顶压机实验组装。在新的实验组装中,热电偶不再横穿石墨加热炉,而是在石墨炉中纵向分布,从石墨炉顶端横向引出。与传统的六面顶压机实验组装相比,这种新组装具有更强的高温稳定性。测试表明:在5GPa压力下,1600℃时实验组装的稳定性能够保持48h以上,1800℃时能够保持约30h,2000℃时能够保持约10h。温度梯度测试表明,当组装的中心温度为1454℃时,在组装中央4mm的范围内平均温度梯度仅有27℃/mm,低于中心温度的2%。较长的保温时间以及低温度梯度能进一步提高六面顶压机在地球科学研究领域中的应用。

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