Method for improving magnesium oxide steel coatings

Details Method for improving magnesium oxide steel coatings Method for improving magnesium oxide steel coatings

C - Chemistry, Metallurgy

21

D

148/23, 148/8

C21D 1/68 (2006.01) C21D 1/70 (2006.01) C21D 8/12 (2006.01) C23C 22/74 (2006.01) C23C 24/00 (2006.01) H01F 1/147 (2006.01)

Patent

CA 1308339

TITLE OF THE INVENTION "METHOD FOR IMPROVING MAGNESIUM OXIDE STEEL COATINGS" ABSTRACT OF THE INVENTION This invention is directed to improved magnesium oxide slurries for use in coating silicon steels prior to high temperature annealing, comprising a calcination-modified magnesium oxide and water. Inorganic salts of barium, chromium, silicon, zinc or aluminum are added to magnesium hydroxide prior to calcination, resulting in a calcined magnesium oxide product having improved properties. This invention is also directed to an improved process for coating silicon steel, using the above described improved magnesium oxide product.

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