期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
Mineral cleavage nature and surface energy: Anisotropic surface broken bonds consideration 被引量:18
1
作者 高志勇 孙伟 胡岳华 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2014年第9期2930-2937,共8页
The population of surface broken bonds of some typical sulfide, oxide and salt-type minerals which may belong to cubic, tetragonal, hexagonal, or orthorhombic system, were calculated. In terms of the calculation resul... The population of surface broken bonds of some typical sulfide, oxide and salt-type minerals which may belong to cubic, tetragonal, hexagonal, or orthorhombic system, were calculated. In terms of the calculation results, the cleavage natures of these minerals were analyzed, and the relationship between surface broken bonds density and surface energy was also established. The results show that the surface broken bonds properties could be used to predict the cleavage nature of most of minerals, and the predicted cleavage planes agree well with those reported in previous literature. Moreover, this work explored a rule that, surface broken bonds density is directly related to surface energy with determination coefficient(R2) of over 0.8, indicating that the former is a dominant factor to determine the latter. Therefore, anisotropic surface broken bonds density can be used to predict the stability of mineral surface and the reactivity of surface atoms. 展开更多
关键词 surface broken bonds CLEAVAGE surface energy pyrite SPHALERITE CASSITERITE rutile HEMATITE
下载PDF
Anisotropic surface broken bond properties and wettability of calcite and fluorite crystals 被引量:19
2
作者 高志勇 孙伟 +1 位作者 胡岳华 刘晓文 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2012年第5期1203-1208,共6页
Anisotropic surface broken bond densities of six different surfaces of calcite and three surfaces of fluorite were calculated. In terms of the calculated results, the commonly exposed surfaces of the two minerals were... Anisotropic surface broken bond densities of six different surfaces of calcite and three surfaces of fluorite were calculated. In terms of the calculated results, the commonly exposed surfaces of the two minerals were predicted and the relations between surface broken bonds densities and surface energies were analyzed. Then the anisotropic wettability of the commonly exposed surfaces was studied by means of contact angle measurement. The calculation results show that the (101^-4), (213^-4)and (01 1^-8)surfaces for calcite and (111) for fluorite are the most commonly exposed surfaces and there is a good rectilinear relation between surface broken bond density and surface energy with correlation of determination (R^2) of 0.9613 and 0.9969, respectively. The anisotropic wettability of different surfaces after immersing in distilled water and sodium oleate solutions at different concentrations can be explained by anisotropic surface broken bond densities and active Ca sites densities, respectively. 展开更多
关键词 CALCITE FLUORITE surface broken bonds CLEAVAGE surface energy contact angle WETTABILITY
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部