Stock material or miscellaneous articles – Composite – Of quartz or glass
Patent
1988-04-29
1990-01-23
Silverberg, Sam
Stock material or miscellaneous articles
Composite
Of quartz or glass
148261, C23C 2207
Patent
active
048956082
ABSTRACT:
The invention relates to aluminum conversion coating compositions and the resulting aluminum alloy protected with the conversion coating. The aluminum or aluminum alloy is coated with a composition having as its essential ingredients phosphate ions, aluminum ions and nitrate ions with the preferred coating having the phosphate ions supplied by phosphoric acid and the nitrate ions supplied by aluminum nitrate with the aluminum ions present in at least 900 ppm, the phosphate ions present in at least 3170 ppm and the nitrate ions present in at least 6200 ppm.
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Sanchem, Inc.
Silverberg Sam
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