Solution for processing of metal replacement with metal aluminum or aluminum alloy and method for surface processing using such solution

A method for surface processing of metal aluminum or an aluminum alloy comprising the steps of:

• contacting a material for processing, containing metal aluminum or an aluminum alloy on a surface thereof, with the a processing solution for metal replacement, for use on metal aluminum or an aluminum alloy, the processing solution at least containing a metal salt capable of being replaced for aluminum, and an alkaline compound, wherein the alkaline compound is a quaternary ammonium hydroxide;
• removing an oxide film on the metal aluminum or aluminum alloy;
• and
• performing the processing of metal replacement of replacing the aluminum with the metal contained in the processing solution for metal replacement to form a film of the metal.

A method for surface processing of metal aluminum or an aluminum alloy comprising the steps of:

• contacting a material for processing, containing metal aluminum or an aluminum alloy on a surface thereof, with a processing solution for metal replacement, for use on metal aluminum or an aluminum alloy, the processing solution at least containing a metal salt capable of being replaced for aluminum, and an alkaline compound, wherein the alkaline compound is a quaternary ammonium hydroxide, wherein the quaternary ammonium hydroxide contains an alkyl group and/or a hydroxyalkyl group;
• removing an oxide film on the metal aluminum or aluminum alloy;
• and
• performing the processing for metal replacement of replacing the aluminum with the metal contained in the processing solution for metal replacement to form a film of the metal.

A method for surface processing of metal aluminum or an aluminum alloy comprising the steps of:

• contacting a material for processing, containing metal aluminum or an aluminum alloy on a surface thereof, with a processing solution for metal replacement, for use on metal aluminum or an aluminum alloy, the processing solution at least containing a metal salt capable of being replaced for aluminum, and an alkaline compound, wherein the alkaline compound is a quaternary ammonium hydroxide, wherein the quaternary ammonium hydroxide is tetramethylammonium hydroxide and/or trimethyl (2-hydroxyethyl) ammonium hydroxide;
• removing an oxide film on the metal aluminum or aluminum alloy;
• and
• performing the processing for metal replacement of replacing the aluminum with the metal contained in the processing solution for metal replacement to form a film of the metal.

A method for surface processing of metal aluminum or an aluminum alloy comprising the steps of:

• contacting a material for processing, containing metal aluminum or an aluminum alloy on a surface thereof, with a processing solution for metal replacement, for use on metal aluminum or an aluminum alloy, the processing solution at least containing a metal salt capable of being replaced for aluminum, and an alkaline compound, wherein the alkaline compound is a quaternary ammonium hydroxide, wherein the metal is zinc;
• removing an oxide film on the metal aluminum or aluminum alloy;
• and
• performing the processing for metal replacement of replacing the aluminum with the metal contained in the processing solution for metal replacement to form a film of the metal.