A CONTRIBUTION TO THE EXPLANATION OF INTERGRANULAR CORROSION OF CHROMIUM- NICKEL STEEL
Intercrystiaine corrosion in chromium-nickel steels is considered from both a theoretical and practical standpoint. Laboratory tests were conducted to determine the effect of boiling sulfuric acid containing copper sulfate on Invar alloy and 1B chromium-9 nickel alloy. Specimens subjected to various heat treatment were tested. Polarization curves and passivation potentials of alloys are given. The use of a potentiostat proved helpful in determining intercrystalline corrosion susceptibility, especially for steels with a low carbon content and those containing stabilizing elements that demonstmate only a slight tendency to intercrystalline corrosion. The extent of intergranular corrosion depends on the amount of precipitated chromium carbide and on the redox potential of the solution. (auth)
- Research Organization:
- State Research Inst. for Materials Protection, Prague
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-15-000575
- OSTI ID:
- 4130853
- Journal Information:
- Corrosion, Journal Name: Corrosion Vol. Vol: 16
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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