Materials compatibility testing for a pilot-scale oxide reduction system.

Totemeier, T. C. ; Herrmann, S. D.

Technical Information Center Oak Ridge Tennessee

关键词: Corrosion tests;    Steels;    Compatibility;    Oxides;    Testing;   

RP-ID  :  DE2001757525

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Materials compatibility tests were performed on five candidate steels for the pilot-scale oxide reduction system currently under development at Argonne National Laboratory-West. Three stainless steels (type 316L, 304, 347) and two alloy steels (2.25Cr-1Mo and 9Cr-1Mo-V) were evaluated. Small, Swagelok-sealed capsules constructed from each steel were loaded with a LiC1 salt solution and exposed at 725degC for 30, 60, and 90 days. The LiC1 salt solution contained 3.5 wt% Li2O, 1 wt% Li3N, and was saturated with Li metal. The extent of corrosion was assessed following exposure by destructive metallographic examination of each capsule. The extent of corrosion observed varied widely, from essentially none to full penetration of the capsule wall. The primary form of corrosion for all steels was grain boundary porosity and depletion of Cr from the exposed surface.