IMPROVEMENTS IN PROTECTING ALUMINUM ALLOYS AGAINST CORROSION
Patent
·
OSTI ID:4059516
The rate of corrosion of Al-Ni alloy fuel cans containing 0.5 to 2.5% nickel, 0.5 to 1% iron and 0.1 to 0.2% silicon and which are cooled by water at 150 to 350 deg C is greatly reduced by adding 800 to 1000 ppm SiO/sub 2/ to the coolant. The pH of the latter should be at least 5. The SiO/sub 2/ can be added as a soluble silicate, the cation being removed by ion exchange. Preferably the cans are given a pretreatment in the stagnant coolant during at least one day in order to create a protective aluminum silicate layer on their surface. (NPO)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-15-014673
- OSTI ID:
- 4059516
- Report Number(s):
- FR 1204092 .
- Country of Publication:
- France
- Language:
- English
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