SURFACE ENERGIES OF SOLID OXIDES AND CARBIDES
SURFACE ENERGIES OF SOLID OXIDES AND CARBIDES
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DOI：
10.1111/j.1151-2916.1956.tb15606.x
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发表时间：
1956-01-01
影响因子：
3.9
通讯作者：
MURRAY, P
中科院分区：
文献类型：
--
作者：
LIVEY, DT;MURRAY, P
碱金属卤化物的表面能被认为是在有关的各种参数，如晶格能，摩尔体积，和热的形成。得出的结论适用于氧化物的表面能的考虑，其范围从250尔格每平方英寸的值。厘米对于PbO至> 1420尔格/sq.厘米对于BeO。这些关系式的预测值与可用数据之间的一致性通常良好，除了含有重金属离子的氧化物，如Cd++和Pb++，其中金属离子的极化倾向于产生较低能量的表面，以及含有高极化能力阳离子的氧化物，如B3+和Si 4+，其中氧阴离子的极化和阳离子的表面屏蔽也产生低能表面。的氧化物的表面能进行了比较，从润湿实验确定的耐火一碳化物。一碳化物的表面能的值范围从800尔格每平方英寸。厘米对于ZrC为1675尔格/平方。厘米并与生成热呈线性关系。
The surface energies of the alkali halides are considered in relation to various parameters such as lattice energy, molar volume, and heat of formation. The conclusions derived are applied to a consideration of the surface energies of the oxides, which range in value from 250 ergs per sq. cm. for PbO to > 1420 ergs per sq. cm. for BeO. Agreement is generally good between the predicted value from those relations and the available data except for those oxides which contain heavy‐metal ions, such as Cd++and Pb++, where polarization of the metal ion tends to produce surfaces of lower energy, and those oxides containing cations of high polarizing power, such as B3+and Si4+, where polarization of the oxygen anions and surface screening of the cations also produce low‐energy surfaces. The surface energies of the oxides are compared with those of the refractory monocarbides as determined from wetting experiments. The surface energies of the monocarbides range in value from 800 ergs per sq. cm. for ZrC to 1675 ergs per sq. cm. for VC and show a linear relationship with the heat of formation.