不同加载压力下平面对顶砧间叶蜡石封垫力学状态的演变

胡云; 陈丽英; 刘秀茹; 彭小娟; 苏磊; 洪时明

doi:10.11858/gywlxb.2015.06.001

不同加载压力下平面对顶砧间叶蜡石封垫力学状态的演变

doi: 10.11858/gywlxb.2015.06.001

胡云^{1, 2,},
陈丽英^{1, 3},
刘秀茹¹,
彭小娟^{1, 4},
苏磊^{1, 5},
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.
成都信息工程学院光电技术学院，四川成都 610225
3.
武汉理工大学物理系，湖北武汉 430070
4.
中国工程物理研究院流体物理研究所冲击波物理与爆轰物理实验室，四川绵阳 621999
5.
郑州轻工业学院技术物理系，河南郑州 450002

基金项目: 国家自然科学基金(10299040，11004163)

详细信息

作者简介:
胡云：胡云(1982—), 女，博士，讲师，主要从事材料制备及性能研究.E-mail:huyun@cuit.edu.cn

通讯作者:
洪时明(1947—), 男，博士，教授，主要从事高压物理和非晶材料研究.E-mail: smhong@home.swjtu.edu.cn

中图分类号: O344.3
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出版历程
- 收稿日期: 2014-12-11

Evolution of the Mechanical Behavior of Pyrophyllite Gasket between Flat Anvils under Different Loading Pressures

HU Yun^{1, 2
,},
CHEN Li-Ying^{1, 3},
LIU Xiu-Ru¹,
PENG Xiao-Juan^{1, 4},
SU Lei^{1, 5},
HONG Shi-Ming^{1,*
, ,}

1.
School of Physical Science and Technology, Key Laboratory of Advanced Technologies of Materials, Ministry of Education of China, Southwest Jiaotong University, Chengdu 610031, China
2.
College of Optoelectronic Technology, Chengdu University of Information Technology, Chengdu 610225, China
3.
College of Science, Wuhan University of Technology, Wuhan 430070, China
4.
National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, Mianyang 621999, China
5.
Department of Physics, Zhengzhou University of Light Industry, Zhengzhou 450002, China

摘要

摘要: 以Wakatsuki提出的恒定加载压力下封垫的压缩模型为基础，采用直径20 mm的硬质合金平面对顶压砧，测量了不同外部加载压力下叶蜡石封垫的临界厚度、弹性区半径以及回弹率等数据；结合对中心压力的标定，以及对回收封垫的图像处理分析和相关计算，给出了封垫内弹性区和塑性区的压力分布随外加压力变化的规律，并估算了准静水压区范围。实验表明：平面对顶压砧间封垫塑性区内的剪切强度随压力提高而增加，中心的压力随外加压力的提高而增加，其增加的比率具有逐渐上升的特点。
- 平面对顶压砧 /
- 叶蜡石封垫 /
- 剪切强度 /
- 压力分布
Abstract: On the basis of the compressible gasket model presented by Wakatsuki, we investigated the squeezing behavior of a pyrophyllite gasket using a Bridgman type high pressure apparatus with an anvil top diameter of 20 mm.A series of data including the critical thickness, the elastic region diameter, the compression spring-back rate etc., were measured under different loading forces.Combining with the pressure calibration at the center of the gasket, the image-analysis of recovered discs and related calculations, we described the evolution of the mechanical state and pressure distribution in the elastic and plastic regions of gasket along with the increase of the loading force, and then estimated the region of quasi-hydrostatic pressure in the gasket.The experimental results show that the increase rate of the center pressure with the loading force shows an upward trendency, which is a feature of the Bridgman anvils.
- Bridgman anvil /
- pyrophyllite gasket /
- shearing strength /
- distribution of pressure

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图 1 (a) 平面对顶压砧与封垫的关系; (b)封垫内压力p(r)和剪切应力τ(r)的分布示意图^[4]

Figure 1. (a) Relationship between flat-face supported anvils and gasket; (b) Distributions of pressure p(r) and shear force τ(r) in gasket^[4]

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图 2 叶蜡石圆片的图像分析处理过程示意图

Figure 2. Process of image analysis for gasket plate

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图 3 B组叶蜡石初始厚度与卸压前、后厚度的关系(平均面压1.44 GPa)

Figure 3. Relationship between initial thickness (h_i) and pressed thickness (h) or residual thickness (h_r) of gaskets in group B (Average pressure is 1.44 GPa)

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图 4 封垫圆片的弹性区和塑性区(白色部分)划分示意图

Figure 4. Division of gaskets' elastic and plastic (White) areas

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图 5 不同外加压力下封垫内压力分布示意图

Figure 5. Pressure distributions in gasket under different loading forces

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图 6 弹性区平均面压与全片平均面压的关系(初始厚度为1.2 mm)

Figure 6. Relationship between the average pressure on elastic area and the average pressure on whole disc (h_i=1.2 mm)

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图 7 压力梯度与塑性区环内平均压力之间的关系

Figure 7. Relationship between pressure gradient and median pressure in the inner ring of plastic area

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图 8 叶蜡石圆片封垫中心区域Bi丝电阻随油压的变化

Figure 8. Behavior of bismuth resistance in the center area of pyrophyllite gasket

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图 9 不同外加压力(F₄>F₃>F₂>F₁)下封垫圆片内压力分布变化示意图

Figure 9. Behavior of pressure distribution in gasket under different loading forces (F₄ > F₃ > F₂ > F₁)

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图 10 不同直径的叶蜡石封垫中心压力标定结果

Figure 10. Center pressure calibrations for gaskets with different diameters

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表 1 叶蜡石封垫的实验条件与结果

Table 1. Experimental conditions and results of pyrophyllite gaskets

Sample No.	Color	p/(GPa)	h_c/(mm)	h/(mm) (h_i＞h_c)	h_r/(mm) (h_i＞h_c)	$\frac{\overline{h_{\mathrm{r}}}-\bar{h}}{\overline{h_{\mathrm{r}}}} /(\%)$	$\frac{h_{\mathrm{c}}}{2 a}$
A	Red	1.44	1.67	1.33	1.59	16.35	0.08
B	Red	1.44	1.92	1.36	1.82	25.27	0.10
C	White	1.44	1.72	1.08	1.68	35.71	0.09
D	White	0.72	1.90	1.24	1.79	30.73	0.10
E	White	0.36	2.09	1.68	2.00	16.00	0.11
Note:p is the average pressure on the whole disc，and 2a is the diameter of the gasket, a=10 mm.

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表 2 不同外加压力下叶蜡石圆片的测量和计算结果(初始厚度为1.2 mm)

Table 2. Measured and calculated results of pyrophyllite gaskets under different loading forces (h_i=1.2 mm)

Sample	p/(GPa)	r_n/(mm)	$\overline{p_{\mathrm{e}}} /(\mathrm{GPa})$	n	Δr_n/(mm)	$\frac{p_{n-1}+p_{n}}{2} /(\mathrm{GPa})$	Δp_n/Δr_n	p_c/(GPa)
B1	0.36	10.0	0.36	0				0.85
B2	0.54	10.0	0.54	0				1.28
B3	0.71	10.0	0.71	0				1.70
B4	0.89	7.31	0.95	1	2.69	0.83	0.09	2.13
B5	1.07	7.05	1.25	2	1.48	1.04	0.27	2.55
B6	1.25	6.83	1.55	3	1.06	1.32	0.44	2.98
B7	1.44	6.23	1.96	4	0.94	1.68	0.46	3.45
Note: $\frac{p_{n-1}+p_{n}}{2}$ is the median pressure in the inner ring of the plastic area, and p_c is the center pressure of calibrated experiment.

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参考文献(25)

[1]	Bridgeman P W. Collected Experimental Papers(Seven Volumes)[M]. Cambridge, MA: Harvard University Press, 1964.
[2]	Wentorf R H Jr. Modern Very High Pressure Techniques[M]. London: Butterworths Press, 1962: 1-50, 163-180.
[3]	Hall H T. Ultra-high pressure apparatus[J]. Rev Sci Instrum, 1960, 31: 125-131. doi: 10.1063/1.1716907
[4]	Wakatsuki M, Ichinose K, Aoki T. Notes on compressible gasket and Bridgman-anvil type high pressure apparatus[J]. Jpn J Appl Phys, 1972, 11: 578-590. doi: 10.1143/JJAP.11.578
[5]	Hemley R J, Mao H K, Shen G Y, et al. X-ray imaging of stress and strain of diamond, iron, and tungsten at megabar pressures[J]. Science, 1997, 276: 1242-1245. doi: 10.1126/science.276.5316.1242
[6]	Erements M I. High Pressure Experimental Methods[M]. New York: Oxford University Press, 1996: 18-48.
[7]	William A B. Diamnod anvil cell, 50th birthday[J]. High Pressure Research, 2009, 29: 163-186. doi: 10.1080/08957950802597239
[8]	Macavei J, Schulz H. Beryllium gaskets suitable for pressures up to 10 GPa[J]. Rev Sci Instrum, 1990, 61: 2236-2238. http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5063710
[9]	Zou G, Ma Y Z, Mao H K, et al. Application of diamond gasket on the XRD study at high pressure and high temperature[C]//Manghnani M H, Nellis W J, Nicol M F. Proceedings of AIRAPT 17. Honolulu, HI: Universities Press(India)Limited, 2000, 2: 1107-1108.
[10]	Lin J F, Shu J F, Mao H K, et al. Amorphous boron gasket in diamond anvil cell research[J]. Rev Sci Instrum, 2003, 74: 4732. doi: 10.1063/1.1621065
[11]	He D W, Zhao Y S, Sheng T D, et al. Bulk metallic glass gasket for high pressure in situ X-ray diffraction[J]. Rev Sci Instrum, 2003, 74: 3012-3016. doi: 10.1063/1.1575926
[12]	Zou G T, Ma Y Z, Mao H K, et al. A diamond gasket for the laser-heated diamond anvil cell[J]. Rev Sci Instrum, 2001, 72: 1298-1301. doi: 10.1063/1.1343864
[13]	Vaisnys R J, Montgomery P W. Materials for ultrahigh pressure sealing in Bridgman anvil devices[J]. Rev Sci Instrum, 1964, 35: 985-989. doi: 10.1063/1.1718969
[14]	Forsgren K F, Drickamer H G. Design variables for a high pressure cell with supported taper pistons[J]. Rev Sci Instrum, 1965, 36: 1709-1712. doi: 10.1063/1.1719446
[15]	Bandyopadhyay A K, Chatterjee S, Gopal E S R, et al. Optimization of gasket thickness in a Bridgman anvil system[J]. Rev Sci Instrum, 1981, 52: 1232-1235. doi: 10.1063/1.1136746
[16]	Chan K S, Huang T L, Grzybowski T A, et al. Pressure concentrations due to plastic deformation of thin films or gaskets between anvils[J]. J Appl Phys, 1982, 53: 6607-6612. doi: 10.1063/1.330091
[17]	Dunstan D J. Theory of the gasket in diamond anvil high pressure cells[J]. Rev Sci Instrum, 1989, 60: 3789-3795. doi: 10.1063/1.1140442
[18]	Kashigin E N. Gasket for sealing high pressure equipment[J]. Chem Petrol Eng, 1993, 29: 122-124. doi: 10.1007/BF01149361
[19]	Polotnyak S B, Idesman A V. Numerical modeling of the mechanical state of deformable gaskets in diamond anvil cell[J]. J Mater Process Tech, 1996, 60: 685-690. doi: 10.1016/0924-0136(96)02405-3
[20]	聂崇礼, 陈琦.超高压装置中的封垫问题[J].高压物理学报, 1988, 2: 113-118. http://www.cnki.com.cn/Article/CJFDTotal-GYWL198802002.htm Nie C L, Chen Q. Gasket problem in the ultra-high pressure apparatus[J]. Chinese Journal of High Pressure Physics, 1988, 2: 113-118. (in Chinese) http://www.cnki.com.cn/Article/CJFDTotal-GYWL198802002.htm
[21]	陈丽英, 刘秀茹, 吴学华, 等.用Bridgman压砧研究我国几种叶蜡石的剪切强度[J].珠宝科技, 2004, 16: 6-10. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zbkj200404002 Chen L Y, Liu X R, Wu X H, et al. Investigation of shear strength several Chines pyrophyllites by using Bridgman anvils[J]. Jewellery Science and Technology, 2004, 16: 6-10. (in Chinese) http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zbkj200404002
[22]	周开勇, 俞新陆.超高压封垫材料力学的测试技术[J].高压物理学报, 1990, 4(1): 7-16. http://www.cnki.com.cn/Article/CJFDTotal-GYWL199001001.htm Zhou K Y, Yu X L. A mechanical test technique for super high pressure gasket material[J]. Chinese Journal of High Pressure Physics, 1990, 4(1): 7-16. (in Chinese) http://www.cnki.com.cn/Article/CJFDTotal-GYWL199001001.htm
[23]	Bean V E, Akimoto S, Bell P M, et al. Another step toward an international practical pressure scale: 2nd AIRATP IPPS task group report[J]. Physica, 1988, 139: 52-54. http://www.sciencedirect.com/science/article/pii/0378436386905218
[24]	陈丽英.快速大幅度增压法测量NaCl的Grüneisen参数[D].成都: 西南交通大学, 2005. Chen L Y. Measuring Grüneisen parameter of NaCl by double-quick and larger range compression[D]. Chengdu: Southwest Jiaotong University, 2005. (in Chinese)
[25]	吕世杰, 罗建太, 苏磊, 等.滑块式六含八超高压实验装置及其压力温度标定[J].物理学报, 2009, 58: 6852-6857. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=wlxb200910031 Lü S J, Luo J T, Su L, et al. A slide-type multi-anvil ultrahigh pressure apparatus and calibrations of its pressure and temperature[J]. Acta Physica Sinica, 2009, 58: 6852-6857. (in Chinese) http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=wlxb200910031