Moderate temperature manganese phosphate conversion coating...

Details Moderate temperature manganese phosphate conversion coating... Moderate temperature manganese phosphate conversion coating...

C - Chemistry, Metallurgy

23

C

C23C 22/18 (2006.01)

Patent

CA 2244902

An aqueous solution of manganese phosphate and phosphoric acid, preferably with little or no content of any material conventionally recognized as an accelerator or of any divalent metal ions other than manganese and iron, forms a good quality paint undercoating phosphate conversion coating on metal substrates, particularly on steel and galvanized steel substrates, when contacted by spraying or immersion with the substrates at a temperature of 54 - 65 °C for a time of 0.5 - 5 minutes.

Une solution aqueuse de manganèse, de phosphate et d'acide phosphorique, contenant de préférence peu ou pas de substance qualifiée conventionnellement d'accélérateur ou d'ions métalliques divalents autres que le manganèse et le fer, forme une couche de conversion du phosphate de bonne qualité pour sous-couche de peinture sur des substrats métalliques, surtout ceux d'acier et d'acier galvanisé, lorsqu'elle est mise en contact par aspersion ou immersion avec ces substrats à une température de 54 à 65 DEG C pendant 0,5 à 5 minutes.

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