There are hundreds of non-corrosive metal coatings, including Parkerizing, the old phosphatizing
process used on many military arms.
In present anticorrosive coating research, great attention is paid to the use of inorganic-organic hybrid sol-gel coatings modified with inorganic particles or extenders for replacement of pretreatments such as phosphatizing
with or without primer in combination with the aqueous adhesive results in fairly durable bonds;
On the coatings side, Lord has developed MetalJacket, a new metal treatment and coating system that eliminates zinc phosphatizing
and the need for adhesive primers, while providing "whole part" corrosion protection without post-painting.
The unique MetalJacket metal treatment and coating system eliminates the cost and environmental issues associated with zinc phosphatizing
, zinc dichromate, or other heavy metal containing pretreatments, while providing excellent corrosion protection.
The significant improvement brought by phosphoric acid can be explained by the in-situ phosphatizing
concept proposed by Lin et al.
Besides parts washers, potential applications include phosphatizing
baths and other solutions containing emulsified oils.
It contains no hazardous volatile organic components, generates no hazardous wastes or sludge such as in zinc phosphatizing
, and uses no toxic acids or heavy metals such as in zinc plating.