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Ted Mooney, P.E. RET
Pine Beach, NJ

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General introduction to chromate conversion coatings

Q. Can anyone help by giving informations about chromate conversion coating? I need information about the make up solution, the process and the maintenance, or maybe give me book reference on this topic.

Thanks,

Benny Lin
- Jakarta, Indonesia
2003

"Surface properties of Conversion Coated Aluminum"
by Raj & Ali
conv_coated_aluminum

on AbeBooks

or eBay or

Amazon

(affil links)

A. Chromate conversion coating on aluminium is widely used worldwide and fairly simple process. It is also used over zinc and cadmium plating to enhance corrosion protection. One can use proprietary chemical and can we brought locally from any electroplating supplier and supplier can also provide method and control procedure.

There are various international standards also exist on some of them are as follows:

ASTM B449 Standard specification for chromates on aluminium
MIL-DTL-81706 [on DLA] Chemical Conversion Materials for Coating Aluminium and Aluminium alloy
ASTM B201-80 Testing Chromate Coating on Zinc and Cadmium Surface
AS 1791 Chromate conversion Coatings Zinc and Cadmium

Dr. Raj Pathya
- Melbourne, Australia
2003

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