Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Patent
1992-11-30
1994-01-18
Zimmerman, John
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
428659, 428939, B32B 1518
Patent
active
052799034
ABSTRACT:
A steel product having a coating based on a hypereutectic zinc-aluminium alloy made by passing it through a zinc bath containing aluminium and silicon wherein the aluminium content is approximately 55% by weight, the silicon content is 1% to 2% by weight, and the bath further includes strontium in a quantity in the range 0.0001% to 0.2% by weight and at least one other element selected from among vanadium in a quantity in the range of 0.02% to 0.2% by weight and chromium in a quantity in the range of 0.005% to 0.2% by weight. The addition of strontium and chromium and/or vanadium stabilizes the structure of the coating and reduces the formation of acicular precipitates of silicon. The coating has an improved adherence and ductility which permits it to be formed without cracking, while retaining an excellent resistance to corrosion. The resulting crystallization pattern of the coating is also finer and more regular and is independent of the substrate.
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Lamberigts Marcel
Leroy Vincent
Centre de Recherches Metallurgiques - Centrum Voor Research in d
Zimmerman John
LandOfFree
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