【摘要】 报道了一种新型二级6-8型大腔体静高压装置.该装置是以国产DS6×800T铰链式六面顶压机为构架,在其六面体压腔中直接放入二级6-8模(球分割)增压装置以产生10GPa以上的压力,还实验了不同规格的预密封边和不同密度的叶蜡石对压力产生效率的影响,在室温下用BiⅠ-Ⅱ(2.55GPa),Ⅲ-Ⅴ(7.7 GPa)和SnⅠ-Ⅱ(9.4GPa)在高压下的相变对14/8(8面体传压介质边长/8面体压腔边长)规格压腔进行了压力标定.实验结果表明,该系统可以在加载压力(油压)约为3×106N(~42 MPa)的情况下产生约10GPa的压力,样品尺寸可以达到3—4mm3.更多还原

【Abstract】 A new split-sphere large-volume high pressure apparatus has been developed to generate high pressure above 10 GPa.The apparatus is based on a domestic hinge-type cubic-anvil press known as the DS6×800T press.In this work,the split-sphere parts are directly placed in the cubic-anvil cell,and the effect of the gasket dimension and phyrophyllite density on pressure transmitting efficiency has been investigated.The relationship of cell pressure versus press load was calibrated at room temperature for the 14/8 (octahedral edge-length/anvil truncation edge-length,in millimeters) cell assembly using the phase transitions of Bi Ⅰ-Ⅱ(2.55 GPa),Ⅲ-Ⅴ(7.7 GPa),and SnⅠ-Ⅱ(9.4 GPa).The experimental results show that the cell pressure can reach about 10 GPa with a sample volume of 3—4 mm3 under an applied load of 290 ton.更多还原