超高压复合传压介质制备的研究
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摘要
以高岭土、滑石、氧化镁、绢云母四种矿物为原料,设计不同配比配制四个配方,经充分研磨,压制成型和在不同的温度下进行烧结得到复合传压介质的样品。测试样品的晶体结构、热膨胀系数、密度和抗弯强度,并与叶腊石的性能进行了比较。结果表明:样品的晶体结构与天然叶腊石不同,样品的热膨胀系数和密度都小于叶腊石,在800℃烧结得到样品抗弯强度较高。
Using four minerals of kaolinite,talc,magnesium oxide,and silk mica as raw materials,and designing four different formulations,the ultra-high pressure composite pressure media were prepared by full grinding,pressing and sintering at different temperatures. The crystal structure,thermal expansion coefficient,density and bending strength of the samples were tested,and the properties of the samples were compared with that of pyrophyllite. The results showed that the crystal structure of the samples and natural pyrophyllite are not the same,the thermal expansion coefficient and density of samples are less than that of pyrophyllite,in addition,the values of flexural strength sample are higher at 800 ℃.
Using four minerals of kaolinite,talc,magnesium oxide,and silk mica as raw materials,and designing four different formulations,the ultra-high pressure composite pressure media were prepared by full grinding,pressing and sintering at different temperatures. The crystal structure,thermal expansion coefficient,density and bending strength of the samples were tested,and the properties of the samples were compared with that of pyrophyllite. The results showed that the crystal structure of the samples and natural pyrophyllite are not the same,the thermal expansion coefficient and density of samples are less than that of pyrophyllite,in addition,the values of flexural strength sample are higher at 800 ℃.
引文
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[3]罗斌.一种新型传压介质制作工艺及其金刚石合成实验[J].超硬材料工程,2006,18(4):19-20.
[4]杨炳飞,刘杰.高岭石质密封传压介质金刚石合成扩大试验研究[J].人工晶体学报,2012,41(6):1581-1586.
[5]王海阔,贺端威,许超,等.复合型多晶金刚石末级压砧的制备并标定六面顶压机6-8型压腔压力至35 GPa[J].物理学报,2013,62(18):180703-1-7.
[6]杨炳飞,刘杰.42 mm腔体高岭石-白云石质传压密封介质金刚石合成扩大试验[J].高压物理学报,2013,27(1):34-39.