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高温下NaCl和KCl晶体的等温体积弹性模量与温度间的关系 被引量:3
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作者 叶频 《安徽师范大学学报(自然科学版)》 CAS 北大核心 2009年第5期433-435,439,共4页
从Singh等人提出的关于固体的热膨胀系数与等温体积弹性模量的关系式出发,利用Anderson-Grüneisen参量的定义,得出等温体积弹性模量和热膨胀系数与温度间关系的表达式,再根据相关定义进一步得出体积热膨胀与温度间的方程式,并将得... 从Singh等人提出的关于固体的热膨胀系数与等温体积弹性模量的关系式出发,利用Anderson-Grüneisen参量的定义,得出等温体积弹性模量和热膨胀系数与温度间关系的表达式,再根据相关定义进一步得出体积热膨胀与温度间的方程式,并将得到的关系式应用至碱卤晶体NaCl和KCl,结果表明理论值与实验值符合得很好. 展开更多
关键词 等温体积弹性模量 热膨胀系数 体积热膨胀 NACL KCL
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非立方矿物的弹性常数和等压膨胀对温度的依赖性(英文)
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作者 邢玲玲 彭雪城 方正华 《安徽师范大学学报(自然科学版)》 CAS 2007年第5期560-563,566,共5页
根据固体的弹性模量对温度的依赖性能了解高温下的热弹性性质,我们得到了弹性模量与等压体积膨胀存在精确的指数形式公式,并计算了和这两种物质在不同温度下的弹性常数.所有计算结果和实验之吻合很好.
关键词 弹性常数 Anderson-Gruneisen参数 体积热膨胀
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Study of the Liquid Phase Volume Expansion for CO_2/Organic Solvent Systems 被引量:1
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作者 LI Zhiyi(李志义) +7 位作者 XIA Yuanjing(夏远景) LIU Xuewu(刘学武) DENG Xiaoliang(邓小亮) Hu Dapeng(胡大鹏) 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2005年第4期504-509,共6页
The supercritical antisolvent (SAS) process has been developed in recent years for the tormation of nanoand micro-particles. It is necessary to study the liquid phase volume expansion (LPVE) and find the relations... The supercritical antisolvent (SAS) process has been developed in recent years for the tormation of nanoand micro-particles. It is necessary to study the liquid phase volume expansion (LPVE) and find the relationships between the operating conditions and the LPVE in order to develop a practical method for determining the operation conditions and selecting an organic solvent for SAS process. The PR equation of state with vdW-1 mixing rule is used to calculate the LPVE for CO2/toluene, CO2/acetone and CO2/ethyl acetate systems, and the results show that the LPVE for each CO2/organic solvent system decreases as the temperature increases. The relationship between the LPVE and the solubility of CO2 in the liquid phase for CO2/organic solvent systems is investigated, and the results show that the LPVE is determined directly by the solubility of CO2 in the liquid phase, xCO2, and can be related to xCO2 independently. No matter what system of CO2/organic solvent is and how different the temperature is, the LPVEs have little difference as long as the solubility of CO2 in the liquid phase, xCO2, keeps constant. The lower temperature is always favorable to the SAS process. The higher the solubility of CO2 in an organic solvent under certain operation condition, the more suitable it is to the SAS process. 展开更多
关键词 supercritical antisolvent process liquid phase volume expansion carbon dioxide organic solvent
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铝活塞热应力损坏的常见形式
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作者 李昌良 《河北农机》 1997年第3期15-15,共1页
关键词 热应力损坏 铝活塞 活塞顶部 活塞环槽 金属材料 活塞材料 强度下降 冷却水温 热膨胀体积 共晶铝硅合金
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Investigation on thermophysical properties of reactive powder concrete 被引量:13
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作者 JU Yang LIU HongBin +3 位作者 LIU JinHui TIAN KaiPei WEI Song HAO Song 《Science China(Technological Sciences)》 SCIE EI CAS 2011年第12期3382-3403,共22页
The thermophysical properties,such as thermal conductivity,thermal diffusivity,specific heat capacity and linear thermal expansion of reactive powder concrete(RPC) with different steel fiber volumetric fractions are i... The thermophysical properties,such as thermal conductivity,thermal diffusivity,specific heat capacity and linear thermal expansion of reactive powder concrete(RPC) with different steel fiber volumetric fractions are investigated by means of high temperature tests. The thermophysical characteristics of RPC with different fiber volumes under different temperatures are analyzed and compared with those of the common high-strength concrete and high-performance concrete. The empirical relationships of thermophysical properties with temperature and fiber volume are identified. By the heat transfer and solid physics methods,the microscopic physical mechanism of heat transfer process and heat conduction properties of RPC are investigated,and the theoretical formulas of specific heat capacity and thermal expansion coefficient are derived,respectively. The effects of temperature and steel fibers on the specific heat capacity and the thermal expansion coefficient are quantitatively analyzed and the discriminant conditions are provided. It is shown that the experimental results are consistent with the theoretical prediction. 展开更多
关键词 reactive powder concrete (RPC) thermophysical properties high temperature fiber reinforcement heat conduction specific heat capacity thermal expansion coefficient
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