Light-Scattering Study of the Glass Transition in Lubricants
Light-Scattering Study of the Glass Transition in Lubricants
复制标题
润滑剂中玻璃化转变的光散射研究
DOI：
10.1115/1.3453201
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发表时间：
1978
期刊：
影响因子：
--
通讯作者：
D. O'shea
中科院分区：
文献类型：
--
作者：
M. Alsaad;W. 0. Winer;F. Medina;D. O'shea
利用布里渊散射测量了四种润滑剂的声速与温度和压力的关系。作为温度或压力的函数的速度的斜率的变化允许的玻璃化转变温度和压力的测定。玻璃化转变数据用于构建每种润滑剂的相图。数据表明，玻璃化转变温度随压力以120至200 C/GPa的速率增加。获得的最大压力为0.69GPa，温度范围为25 - 100 ℃。
The sound velocity of four lubricants has been measured as a function of temperature and pressure using Brillouin scattering. A change in slope of the velocity as a function of temperature or pressure allowed the determination of the glass transition temperature and pressure. The glass transition data were used to construct a phase diagram for each lubricant. The data indicate that the glass transition temperature increased with pressure at a rate which ranged from 120 to 200 C/GPa. The maximum pressure attained was 0.69 GPa and the temperature range was from 25 to 100 C.