C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 22/34 (2006.01) C23C 22/50 (2006.01)
Patent
CA 2597630
This invention comprises an acidic aqueous solution for treating metal substrates to improve the adhesion bonding and corrosion protection of the metal surface which comprises effective amounts of water soluble trivalent chromium compounds, fluorozirconates, effective amounts of at least one corrosion inhibitors such as benzotriazole, fluorometallic compounds, zinc compounds, thickeners, surfactants, and at least about 0.001 mole per liter of the acidic solution of a polyhydroxy and/or carboxylic compound as a stabilizing agent for the aqueous solution.
Cette invention concerne une solution aqueuse acide utilisée pour traiter des substrats métalliques pour améliorer la liaison adhésive et la protection contre la corrosion de la surface métallique, laquelle solution comprend des quantités efficaces de composés chrome trivalent hydrosolubles, des fluorozirconates, des quantités efficaces d'au moins un inhibiteur de corrosion tel que le benzotriazole, des composés fluorométalliques, des composés zinc, des agents épaississants, des tensioactifs et au moins environ 0,001 mole par litre de la solution acide d'un composé polyhydroxy et/ou carboxylique comme agent stabilisant pour la solution aqueuse.
Matzdorf Craig A.
Nickerson William C. Jr.
Mcfadden Fincham
The United States Of America As Represented By The Secretary Of The Nav Y.
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