A STUDY OF RELIABLE METHODS OF ASSESSMENT OF THE CORROSION RESISTANCE OF CHROMIUM-NICKEL AUSTENITIC STEELS IN NITRIC ACID. A REVIEW OF PROGRESS TO SEPTEMBER 1, 1952
Technical Report
·
OSTI ID:4293083
Data on the corrosion of 18/13/1 austenitic steel in boiling 70% nitric acid were suppliod by the manufacturers of the steel. The results from the various laboratories differed over a considerable range. It was found that the main factor producing these variations was the degree of contamination of the nitric acid by corrosion products of the steel. Further investigations revealed that the main influence was exercised by the presence or absence of chromate ions and that formation of these ions could be suppresard by using an internal or "cold finger" condenser. It was shown that the austeritic chromium-rickel steels are more susceptible to attach along edges percerdicular to the direction of hot rolling. Rapid peretration occurs along slag stringers included in the steel. In most canes, the penetration rate, initially quite low, slowly increased to a ceiling rate which then remained constant. The effeets of pretreatmeat on specimens, i.e., heat treatment, picking, and polishing, were investigated, sud the weight loss method of estimating corrosion was compared with other methods. Recommended methods of described. (auth)
- Research Organization:
- United Kingdom Atomic Energy Authority. Industrial Group. Culcheth Labs., Culcheth, Lancs, England
- NSA Number:
- NSA-13-005576
- OSTI ID:
- 4293083
- Report Number(s):
- RDB(C)/TN-16
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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