Volume 23 Issue 6
Apr 2015
Turn off MathJax
Article Contents
HAN Liang, ZHOU Yong-Sheng, DANG Jia-Xiang, HE Chang-Rong, YAO Wen-Ming. Temperature Calibration for 3 GPa Molten Salt Medium Triaxial Pressure Vessel[J]. Chinese Journal of High Pressure Physics, 2009, 23(6): 407-414 . doi: 10.11858/gywlxb.2009.06.002
Citation: HAN Liang, ZHOU Yong-Sheng, DANG Jia-Xiang, HE Chang-Rong, YAO Wen-Ming. Temperature Calibration for 3 GPa Molten Salt Medium Triaxial Pressure Vessel[J]. Chinese Journal of High Pressure Physics, 2009, 23(6): 407-414 . doi: 10.11858/gywlxb.2009.06.002

Temperature Calibration for 3 GPa Molten Salt Medium Triaxial Pressure Vessel

doi: 10.11858/gywlxb.2009.06.002
More Information
  • Corresponding author: ZHOU Yong-Sheng
  • Received Date: 05 Mar 2009
  • Rev Recd Date: 09 Apr 2009
  • Publish Date: 15 Dec 2009
  • A triaxial deformation apparatus with 3 GPa molten salt medium pressure vessel was developed to study the mechanical behavior of the rock under high temperature and ultra-high pressure. It is based on the conventional Griggs design and the molten salt cell concept is after the concept of Green and Borch (1989) and Rybacki et al (1998). The pressure vessel is improved with respect to systems described previously by the use of different salt mixtures with low eutectic temperatures, and by a mechanically stable arrangement of the thermocouples. In this study, we focus on the temperatures distribution around the sample under confined pressure of 500 MPa. The experimental results show that there is a good linear correlation between temperatures monitored by the upper thermocouple (at the upper 1/3 position of the sample center, outside the sample) and others. Based on the linear slopes, we can identify temperature difference in positions of sample. The temperature difference between the upper and the lower thermocouple (at the lower 1/3 position of the sample center, outside the sample) is so small that both of them can be used as temperature controller for the heating system. The temperature in the center of the sample is by 4% lower than the ones monitored by the upper thermocouple. The temperature in the bottom of the sample is by 5% lower than that in the center of the sample. The temperature in the lower quarter of the sample is by 2% lower than that in the center of the sample. The temperature distribution in the sample show that vertical temperature gradient in the sample is constant (16 ℃/mm at 900 ℃). The temperature controlling resolution and temperature distribution in the pressure vessel are similar to the same type apparatuses in other laboratories of the world.

     

  • loading
  • Tullis T E, Tullis J. Experimental Rock Deformation Techniques [J]. Am Geophys Union, Geophys Monogr, 1986, 36: 297-324.
    Kronenberg A, Kirby S. Probing the Earth's Strength: Can We Measure Small Stress at High Pressure ? [J]. EOS, Trans Amer Geophys Union, 1992, 72: 453-454.
    Griggs D T. Hydrolytic Weakening of Quartz and Other Silicates, Geophys [J]. J R Astr Soc, 1967, 14: 19-31.
    Green H W, Borch R S. A New Molten Salt Cell for Precision Stress Measurements at High Pressure [J]. Eur J Mineral, 1989, 1: 213-219.
    Green H W, Borch R S. High Pressure and Temperature Deformation Experiments in a Liquid Confining Medium [J]. Am Geophys Union, Geophys Monogr, 1990, 56: 195-200.
    Gleason G C, Tullis J. Improving Flow Laws and Piezometers for Quartz and Feldspar Aggregates [J]. Geophys Res Lett, 1993, 20: 2111-2114.
    Tingle T N, Green H W, Young T E, et al. Improvements to Griggs-Type Apparatus for Mechanical Testing at High Pressures and Temperatures [J]. Pure Appl Geophys, 1993, 141: 523-543.
    Rybacki E, Renner J, Konrad K, et al. A Servohydraulically-Controlled Deformation Apparatus for Rock Deformation under Conditions of Ultra-High Pressure Metamorphism [J]. Pure Appl Geophys, 1998, 152: 579-606.
    Dang J X, Zhou Y S, He C R. Pressure Calibration for the Solid Medium Vessel of Piston-Cylinder Apparatus under High Pressure and High Temperature [J]. Seismology and Geology, 2007, 29(1): 133-143. (in Chinese)
    党嘉祥, 周永胜, 何昌荣. 活塞-圆桶式固体介质高温高压实验容器的压力标定方法 [J]. 地震地质, 2007, 29(1): 133-143.
    Dang J X, Zhou Y S, He C R, et al. The Method of Confined Pressure Calibration for Rock Rheometer under High Temperature and High Pressure [J]. Earth Science Frontiers, 2008, 15(3): 287-291. (in Chinese)
    党嘉祥, 周永胜, 何昌荣, 等. 高温高压岩石流变仪的围压标定方法 [J]. 地学前缘, 2008, 15(3): 287-291.
    Nelson D. Finite Element Analysis of the Temperature Distribution within a Griggs Apparatus Sample Assembly (Abst) [J]. EOS, Trans Am Geophys Union, 1977, 58: 513.
    Kirby S H, Kronenberg A K. Deformation of Clinopyroxenite: Evidence for Transition in Flow Mechanisms and Semibrittle Behavior [J]. J Geophys Res, 1984, 89(5): 3177-3192.
    Leistner H. Temperaturgradienten-Messungen in Piston-Zylinder Pressen [J]. Fortschr Mineral, 1979, 57(1): 81-82.
    Cemic L, Geiger C A, Hoyer W W, et al. Piston-CylinderTechniques: Pressure and Temperature Calibration of a Pyrophyllite-Based Assembly by Means of DTA Measurements, a Salt-Based Assembly, and a Cold Sealing Sample Encapsulation Method [J]. N Jb Miner Mh, 1990, H2: 49-64.
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views(10281) PDF downloads(993) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return