- 必威体育下载

姓名
邮箱
手机号码
标题
留言内容
验证码

Abstract

Since the invention of split sphere multianvil apparatus, the maximum sample size that can be obtained on tungsten carbide (WC) anvils with a certain size has always been a neglected issue. The maximum volume of loaded gaskets and the maximum multianvil cell assembly operating on given size WC anvils are calculated by a simplified geometric model. As a concrete example, the maximum volume of loaded gaskets in different assemblies (18/11, 25/17 (octahedral edge-length/anvil truncation edge-length, in millimetre)) and different initial shapes of octahedrons (octahedron chamfered or not) running on WC anvils with 25.4 mm edge-length are calculated. The maximum initial sizes of gaskets in different assemblies are also calculated according to the maximum volume of loaded gaskets. Using the pyrophyllite octahedron as the pressure transmission medium, the pressure calibration of 14/8, 18/11, and 25/17 assembly are carried out on WC cubes, of which the edge-length is 25.4 mm, to verify the calculated results. The cell pressure is calibrated by in situ observing resistance change caused by phase transition of pressure calibration material at high pressure. All assemblies run stably and no blow-out phenomenon occurs. The experimental results show that the pressure transfer efficiency of 18/11 and 25/17 assembly with chamfered octahedron are better than previous reported results in the same pressure range. The experimental results also indicate that the calculations of the gasket in this work are valid. And the 25/17 assembly with chamfered octahedron can run stably on WC cube with 25.4 mm edge-length. In addition, using graphite tubes as heater, heating structure designs of different assemblies (14/8, 18/11, 25/17) are completed, in which the 14/8 assembly can achieve the highest temperature of 2300 ℃. The diameter of sample chamber is almost one centimeter in 25/17 assembly. This work contributes to the development of assembly techniques for secondary anvil made of polycrystalline diamond materials to obtain larger sample volumes under higher pressure conditions.

Keywords:

Authors and contacts

Corresponding author:Wang Wen-Dan,wendan.wang@yahoo.com

Funds:Project supported by the National Natural Science Foundation of China (Grant Nos. 51402245, 11902276) and the National Key Laboratory for Shock Wave and Detonation Physics of China (Grant No. JCKYS2019212007)

FullText HTML: translate this paragraph

References

[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]

Cited By

DownLoad: Full-Size Img PowerPoint

符号	符号的含义
a	八面体初始边长
b	碳化钨立方块截角边长
l	立方块二级压砧的边长
R_max	一个密封平面上密封边形成的圆形区域的最大半径, ${R_{\max }} = l + t/2$
S₁	加载结束后八面腔内剩余的八面体传压介质在一个密封平面上的投影面积, ${S_1} = {b^2} + {t^2} + 2\sqrt 2 bt$
S₂	部分八面体传压介质流入一个密封平面内形成的区域, $ {S}_{2}t=\Delta V/3=(0.9{V}_{0}-{V}_{\text{八面体}})/3$
S₃	一个密封平面内预先放置的叶腊石预密封条受挤压形成的区域, ${S_3} = {\text{π}}{R^2} - {S_1} - {S_2}$
t₀	叶腊石预密封条的初始厚度, ${t_0} = \sqrt 2 (a - b)/3$^[12]
t	加载结束后密封边的厚度
V₀	八面体传压介质的初始体积, ${V_0} = \sqrt 2 {a^3}/3$
V_八面体	加载结束后八面腔内剩余的八面体传压介质的体积, $ {V}_{\text{八面体}}=\sqrt{2}{b}^{3}/3+3{b}^{2}t+3\sqrt{2}b{t}^{2}+{t}^{3}$^[12]
ΔV	加载结束后流入相互垂直的3个密封平面内的部分八面体传压介质的总体积, $ \Delta V=0.9{V}_{0}-{V}_{\text{八面体}}$
V_{叶腊石密封边}	一个密封平面上叶腊石预密封条形成的密封边的体积, $ {V}_{\text{叶腊石密封边}}={S}_{3}t=({\text{π}}{R}^{2}-{S}_{1}-{S}_{2})\times t$
V_{max叶腊石密封边}	一个密封平面上叶腊石预密封条形成的密封边的最大体积, $ {V}_{\mathrm{max}}{}_{\text{叶腊石密封边}}=[{\text{π}}{(l+t/2)}^{2}-{S}_{1}-{S}_{2}]\times t$
V_预密封条	一个预密封条的体积, $ {V}_{\text{预密封条}}={S}_{\text{梯形}}\times {t}_{0}=(a+w)w\times {t}_{0}$
V_{max预密封条}	一个密封平面上叶腊石预密封条的最大体积, $ {V}_{\mathrm{max}{\text{预密封条}}}=4{V}_{\text{预密封条}}=4(a+w)w\times {t}_{0}={V}_{{\max}{\text{叶腊石密封边}}}/0.9$
w	预密封条宽度
w_max	预密封条的最大宽度

DownLoad: CSV

组装类型	预留密封条厚度t₀/mm	八面体初始边长a/mm	八面体初积V₀/mm³	二级压砧截角边长b/mm	八面体倒棱宽度/mm	二级压砧边长l/mm
18/11磨倒棱	3.3	15.66	1900.6	11	3.3	25.4
18/11未磨倒棱	3.3	18	2748.8	11	0	25.4
25/17磨倒棱	3.8	22.31	5464.6	17	3.8	25.4
25/17未磨倒棱	3.8	25	7364.6	17	0	25.4
注: 表中预密封条初始厚度t₀的具体计算方法可参考文献[12]; 倒棱八面体见图3, 倒棱八面体的初始体积V₀通过构建数学几何模型计算得出.

DownLoad: CSV

组装类型	加载后密封边的厚度t/mm	对应的预密封条最大宽度w_max/mm
18/11磨倒棱	1.4	8.03
	1.6	9.05
	1.8	10.03
18/11未磨倒棱	1.4	6.86
	1.6	7.89
	1.8	8.87
25/17磨倒棱	1.8	6.37
	2.0	7.19
	2.2	7.98
25/17未磨倒棱	1.8	4.74
	2.0	5.57
	2.2	6.38

DownLoad: CSV

[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]

[1]	Pei Bo-Yang, Zhuang Ge, Xie Jin-Lin, Zhou Yi-Nan.Absolute calibration method of electron cyclotron emission imaging system on EAST tokamak. Acta Physica Sinica, 2024, 73(13): 135202.doi:10.7498/aps.73.20240497
[2]	Tian Yi, Du Ming-Hao, Zhang Jia-Wei, He Duan-Wei.Research on pressure transmission and sealing performance of pyrophyllite in a cubic large chamber static high-pressure device. Acta Physica Sinica, 2024, 73(1): 019101.doi:10.7498/aps.73.20231087
[3]	Qi Yun-Ping, Zhang Ting, Guo Jia, Zhang Bao-He, Wang Xiang-Xian.High performance temperature and refractive index dual-purpose sensor based on the ethanol-sealed metal-dielectric-metal waveguide. Acta Physica Sinica, 2020, 69(16): 167301.doi:10.7498/aps.69.20200405
[4]	Shi Wen-Jun, Yi Ying-Yan, Li Min.Pressure dependence of refractive index of Ge near the absorption edge. Acta Physica Sinica, 2016, 65(16): 167801.doi:10.7498/aps.65.167801
[5]	Tang Fei, Chen Li-Ying, Liu Xiu-Ru, Wang Jun-Long, Zhang Lin-Ji, Hong Shi-Ming.A strip anvil apparatus with linear uniform pressure distribution. Acta Physica Sinica, 2016, 65(10): 100701.doi:10.7498/aps.65.100701
[6]	Jiang Jian-Jun, Li He-Ping, Dai Li-Dong, Hu Hai-Ying, Zhao Chao-Shuai.Raman spectra based pressure calibration of the non-gauge sapphire anvil cell at high temperature and high pressure. Acta Physica Sinica, 2015, 64(14): 149101.doi:10.7498/aps.64.149101
[7]	Wang Hai-Kuo, He Duan-Wei, Xu Chao, Liu Fang-Ming, Deng Ji-Rui, He Fei, Wang Yong-Kun, Kou Zi-Li.Calibration of pressure to 35 GPa for the cubic press using the diamond-cemented carbide compound anvil. Acta Physica Sinica, 2013, 62(18): 180703.doi:10.7498/aps.62.180703
[8]	Guan Jun-Wei, He Duan-Wei, Wang Hai-Kuo, Peng Fang, Xu Chao, Wang Wen-Dan, Wang Kai-Xue, He Kai.Influence of mechanical configuration and hardness of last stage anvil on high pressure producing efficiency for octahedral cell. Acta Physica Sinica, 2012, 61(10): 100701.doi:10.7498/aps.61.100701
[9]	Zhang Li-Chao, Hou Lan-Tian, Zhou Gui-Yao.Study on dispersion compensation property of octagonal photonic crystal fibers. Acta Physica Sinica, 2011, 60(5): 054217.doi:10.7498/aps.60.054217
[10]	Guo Yan-Yan, Hou Lan-Tian.Design of all-solid octagon photonic crystal fiber with large mode area. Acta Physica Sinica, 2010, 59(6): 4036-4041.doi:10.7498/aps.59.4036
[11]	Yang Qian-Qian, Hou Lan-Tian.Octagonal photonic crystal fiber of birefringence. Acta Physica Sinica, 2009, 58(12): 8345-8351.doi:10.7498/aps.58.8345
[12]	Lü Shi-Jie, Luo Jian-Tai, Su Lei, Hu Yun, Yuan Chao-Sheng, Hong Shi-Ming.A slide-type multianvil ultrahigh pressure apparatus and calibrations of its pressure and temperature. Acta Physica Sinica, 2009, 58(10): 6852-6857.doi:10.7498/aps.58.6852
[13]	Wang Fu-Long, He Duan-Wei, Fang Lei-Ming, Chen Xiao-Fang, Li Yong-Jun, Zhang Wei, Zhang Jian, Kou Zi-Li, Peng Fang.Design and assembly of split-sphere high pressure apparatus based on the hinge-type cubic-anvil press. Acta Physica Sinica, 2008, 57(9): 5429-5434.doi:10.7498/aps.57.5429
[14]	Zhang Dan, Su Liang-Bi, Xu Jun, Yang Qiu-Hong, Zhang Lian-Han, Li Hong-Jun.Spectroscopic behavior of Cr4+ in octahedral sites. Acta Physica Sinica, 2006, 55(6): 3193-3196.doi:10.7498/aps.55.3193
[15]	JIN QING-HUA, SUN PING-CHUAN, WANG JING-ZHONG, LI ZI-YUAN, DING DA-TONG.STUDIES ON DEALUMINIZATION PROCESS OF FAUJASITE BY MONTE-CARLO METHOD. Acta Physica Sinica, 1991, 40(8): 1371-1376.doi:10.7498/aps.40.1371
[16]	JIANG SHAN, ZHU HAO-RONG, SHEN XUE-CHU, J. SCHILZ.THE PRESSURE DEPENDENCE OF ENERGY GAP FOR MIXED CRYSTAL Hg0.3Cd0.7Te. Acta Physica Sinica, 1989, 38(11): 1858-1863.doi:10.7498/aps.38.1858
[17]	Shan Wei, Shen Xue-chu, Zhao Min-guang, Zhu Hao-rong.PRESSURE DEPENDENCE OF THE ABSORPTION EDGE OF SEMIMAGNETIC SEMICONDUCTORS Cd1-xMnxTe. Acta Physica Sinica, 1986, 35(10): 1290-1298.doi:10.7498/aps.35.1290
[18]	ZHA CHANG-SHENG, GUO CHANG-XIN.MEASUREMENT OF HYDROSTATIC PRESSURE EFFECT ON OPTICAL ABSORPTION EDGE OF AMORPHOUS As2S3 USING HIGH-PRESSURE MICROSPECTROSCOPIC SYSTEM. Acta Physica Sinica, 1982, 31(11): 1564-1568.doi:10.7498/aps.31.1564
[19]	WEN ZHEN-YI.A UNITARY GROUP TREATMENT FOR STRONG CRYSTAL FIELD IN OCTAHEDRAL SYMMETRY. Acta Physica Sinica, 1979, 28(1): 88-103.doi:10.7498/aps.28.88
[20]	.高压力下液体之比电容. Acta Physica Sinica, 1934, 1(2): 1-55.doi:10.7498/aps.1.1-1

Catalog

Vol. 70, Issue 14 - 2021-07-20

Metrics

Abstract views:4253
PDF Downloads:64
Cited By:0

Search

Article