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应力腐蚀敏感指数是表征材料在特定介质中抗应力腐蚀能力大小的一个特征参数,也是材料的一个极其重要的参数。遗憾的是至今还没有一个统一而公认的计算公式,以此来表征材料抗应力腐蚀的能力。原则上讲,只要空气中的慢拉伸曲线上任何一个参数与在介质中慢拉伸曲线上同一参数进行比较,其比较值都可以用来表征材料在该介质中的抗应力腐蚀能力。以图1、2为例,图1是00Cr18Ni14Mo2Cu在135℃空气和135℃的51%硫氰酸钠介质中的
Stress corrosion sensitivity index is a characterization of materials in a particular medium, the size of the capacity of anti-stress corrosion characteristic parameters, but also a material of the extremely important parameters. Unfortunately, so far there is no uniform and accepted calculation formula, in order to characterize the material resistance to stress corrosion. In principle, as long as any parameter on the slow stretch curve in air is compared with the same parameter on the slow stretch curve in the medium, its comparative value can be used to characterize the material’s resistance to stress corrosion. Taking FIG. 1 and FIG. 2 as an example, FIG. 1 is a schematic diagram of the growth of 00Cr18Ni14Mo2Cu in 135 ° C. air and 51% sodium thiocyanate at 135 ° C.