Bridgman压砧上叶蜡石封垫预烧工艺与内加热方式的改进

袁朝圣; 刘秀茹; 何竹; 洪时明

doi:10.11858/gywlxb.2016.04.002

Bridgman压砧上叶蜡石封垫预烧工艺与内加热方式的改进

doi: 10.11858/gywlxb.2016.04.002

袁朝圣^{1, 2,},
刘秀茹¹,
何竹¹,
洪时明¹

1.
西南交通大学物理科学与技术学院，材料先进技术教育部重点实验室，四川成都 610031
2.
郑州轻工业学院高压科学与技术研究中心，河南郑州 450002

基金项目:

国家自然科学基金 10299040

国家自然科学基金 11004163

国家自然科学基金 21503194

中央高校基础科研业务费 2682014ZT31

河南省教育厅科学技术研究重点项目 12B140018

河南省教育厅科技攻关项目 152102210143

详细信息

作者简介:
袁朝圣 (1980—), 男，博士，讲师，主要从事高压下高分子材料的制备及性能研究.E-mail:zzyuancs@163.com

中图分类号: O521.3
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出版历程
- 收稿日期: 2015-03-25
- 修回日期: 2015-05-21

Improvement on Roasting Course of Pyrophyllite Gasket andInternal Heating Assembly in Bridgman Anvil

1.
Laboratory of High Pressure Physics, Southwest Jiaotong University, Chengdu 610031, China
2.
High Pressure Research Center of Science and Technology, Zhengzhou University of Light Industry, Zhengzhou 450002, China

摘要

摘要: 在Bridgman压砧上研究了不同预烧工艺对叶蜡石封垫高压性能的影响，发现提高焙烧温度有助于提高叶蜡石封垫的临界厚度和中心弹性区面积，能有效扩大样品腔尺寸，并对高温焙烧(最高900℃)的叶蜡石封垫进行了压力标定。在此基础上，对叶蜡石封垫的内加热组装方式进行了改进，并在常压和高压下分别测试了新组装方式的加热性能，实现了4.0GPa高压下1300℃温度范围内的加热。这些实验工作为进一步开展在Bridgman压砧上制备大尺寸亚稳材料提供了实验条件。
- Bridgman压砧 /
- 叶蜡石 /
- 焙烧温度 /
- 内加热 /
- 石墨
Abstract: We investigated the effects of the roasting course on behaviors of the pyrophyllite gasket under high pressures using Bridgman anvils.The results show that high roasting temperature is beneficial to increase the critical thickness and enlarge the area of the elastic central region of pyrophyllite gaskets, which helps to effectively enlarge the size of the sample chamber.The pressure calibration was carried out using the high-temperature (maximum 900℃) roasted pyrophyllite gasket.And based on this calibration, we measured the temperature at the center of the sample cavity with the improved internal heating assembly under ambient and high pressures respectively.The improved internal heating assembly expanded the heating range up to 1300℃ under 4.0GPa, which provides a much greater variety of conditions for the preparation of bulk metastable materials in the Bridgman anvils.
- Bridgman anvil /
- pyrophyllite gasket /
- roasting temperature /
- internal heating /
- graphite

HTML全文

图 1 Bridgman压砧和样品的组装示意图^[9]

Figure 1. Sketch of Bridgman anvil and sample location^[9]

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图 2 样品组装方式示意图

Figure 2. Sketch of sample assembly

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图 3 经不同温度程序焙烧的叶蜡石圆片的初始厚度和回收厚度的实测结果

Figure 3. The measured initial and recovered thicknesses of pyrophyllite wafers roastedthrough different temperature courses

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图 4 油压和Bi丝电阻随时间的变化

Figure 4. Oil pressure and resistanceof Bi varying with time

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图 5 0.1GPa压力下样品腔中心温度和输入电压的关系

Figure 5. Temperature curve at the center of sample cavityplotted against input voltage under 0.1GPa

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图 6 4.0GPa压力下样品腔中心温度和输入电压的关系

Figure 6. Temperature curve at the center of sample cavityplotted against input voltage under 4.0GPa

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参考文献(14)

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