Crystallographic effects in corrosion of austenitic stainless steel 316L
Crystallographic effects in corrosion of austenitic stainless steel 316L
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奥氏体不锈钢 316L 腐蚀中的晶体学效应
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
R. Pettersson
中科院分区：
文献类型：
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作者：
D. Lindell;R. Pettersson
电子背散射衍射和共聚焦激光显微镜已被用来量化的结晶各向异性的程度在腐蚀过程中的AISI 316 L在两个测试解决方案。在体积分数为30%的硫酸中的腐蚀表现出明显的晶体学各向异性，其中腐蚀速率以{111} < {110}<${100}的顺序增加。腐蚀最慢的{111}面与快腐蚀的{100}面之比约为3。FeCl 3和AlCl 3在乙醇/甘油中的溶液中的点蚀与其他报道的观察结果一致，即高原子密度表面{111}和{100}不太容易发生点蚀，但影响相对较小。
Electron backscatter diffraction and confocal laser microscopy have been used to quantify the degree of crystallographic anisotropy during corrosion of AISI 316L in two test solutions. Corrosion in 30 vol% H2SO4 sulphuric acid shows pronounced crystallographic anisotropy in which the corrosion rate increases in the order {111} < {110} ≲ {100}. The ratio between the slowest corroding {111} and the fasting corroding {100} surfaces is about 3. Pitting corrosion in a solution of FeCl3 and AlCl3 in ethanol/glycerol agrees with other reported observations that high‐atomic density surfaces {111} and {100} are less prone to pit nucleation, however the effect was relative small.