Metal sheet with a ZnAlMg coating having a particular microstructure, and corresponding production method

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United States of America Patent

PATENT NO 9598757
APP PUB NO 20150368778A1
SERIAL NO

14766344

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Abstract

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A metal sheet including a substrate having at least one face coated by a metallic coating is provided. The metallic coating has an aluminum content by weight tAl of between 3.6 and 3.8% a magnesium content by weight tMg of between 2.7 and 3.3%. The coating has a microstructure comprising a lamellar matrix of eutectic ternary Zn/Al/MgZn2 and possibly:

    dendrites of Zn with an accumulated surface content exceeding 5.0%,flowers of binary eutectic of Zn/MgZn2 with an accumulated surface content less than or equal to 15.0%,dendrites of binary eutectic Zn/Al surface with an accumulated surface content of less than 1.0%islets of MgZn2 with an accumulated surface content below 1.0%.

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Patent Owner(s)

Patent OwnerAddress
ARCELORMITTAL1160 LUXEMBOURG

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Allely, Christian Maizieres-les-Metz, FR 45 135
Diez, Luc Metz, FR 18 82
Machado, Amorim Tiago Metz, FR 27 49
Mataigne, Jean-Michel Senlis, FR 29 130

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