Energies and Grooving Kinetics of [001] Tilt Boundaries in Nickel Oxide
Energies and Grooving Kinetics of [001] Tilt Boundaries in Nickel Oxide
复制标题
氧化镍中[001]倾斜边界的能量和开槽动力学
DOI：
10.1111/j.1151-2916.1968.tb11873.x
复制
发表时间：
1968
影响因子：
3.9
通讯作者：
R. E. Jech
中科院分区：
文献类型：
--
作者：
D. Readey;R. E. Jech
用表面轮廓仪从槽底二面角测定了氧化镍双晶中对称[001]倾斜晶界的相对能量。在1535°C下，在空气中，相对晶界能随着倾斜角增加到约20度，然后随着角度增加保持相对恒定。一个很强的温度依赖性的边界能量的解释偏析的点缺陷的边界。开槽动力学控制的镍的体积扩散，并给出了非化学计量固体中的质量传输的理论讨论，在一定条件下预测这种行为。
Relative energies of symmetrical [001] tilt boundaries in nickel oxide bicrystals were determined from the dihedral angle at the groove root with a surface profilometer. At 1535°C in air, the relative grain boundary energy increases with tilt angle up to about 20 degrees and then remains relatively constant with increasing angle. A strong temperature dependence of boundary energy is explained by segregation of point defects to the boundary. Grooving kinetics are controlled by volume diffusion of nickel, and a theoretical discussion of mass transport in nonstoichio-metric solids is given, predicting this behavior under certain conditions.