Segregation on the Surface of Steels in Heat Treatment and Oxidation
Segregation on the Surface of Steels in Heat Treatment and Oxidation
复制标题
热处理和氧化过程中钢材表面的偏析
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
H. Viefhaus
中科院分区：
文献类型：
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作者：
H. Grabke;V. Leroy;H. Viefhaus
在钢的退火期间，在钢表面上观察到不同种类的富集。溶解元素的平衡偏析导致在单层范围内富集，两个相互作用的元素可以通过共偏析形成二维化合物，并且化学吸附诱导偏析导致单层表面化合物。如果浓度或压力超过了形成三维本体化合物所必需的浓度或压力，则由于表面沉淀而发生富集。氧化另一方面，氧化会引起溶解元素在氧化膜下的偏析或聚集，本文对这些不同的现象进行了讨论，并列举了一些实例，这对钢的生产和性能有重要意义。
During annealing of steels different kinds of enrichments are observed on steel surfaces. Equilibrium segregation of a dissolved element leads to enrichment in the range of a monolayer, two interacting elements can form two-dimensional compounds by cosegregation and also chemisorption induced segregation leads to monolayer surface compounds. If the concentrations or pressures are exceeded which are necessary for the formation of three-dimensional bulk compounds, enrichments occur due to surface precipitation resp. oxidation. On the other hand, oxidation can cause segregation or accumulations of dissolved elements beneath the oxide scale.These different phenomena are fundamentally discussed and examples are presented, which are important in the steel production and for the steel properties.