Invention Grant
- Patent Title: Zirconium-vanadium conversion coating compositions for ferrous metals and a method for providing conversion coatings
- Patent Title (中): 用于黑色金属的锆钒转化涂料组合物和提供转化涂层的方法
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Application No.: US11237267Application Date: 2005-09-28
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Publication No.: US07815751B2Publication Date: 2010-10-19
- Inventor: Joseph D. Pemberton , John P. Jandrists
- Applicant: Joseph D. Pemberton , John P. Jandrists
- Applicant Address: US IL Waukegan
- Assignee: Coral Chemical Company
- Current Assignee: Coral Chemical Company
- Current Assignee Address: US IL Waukegan
- Agency: Fitch, Even, Tabin & Flannery
- Main IPC: C23C22/42
- IPC: C23C22/42 ; C23C22/44 ; C23C22/34 ; C23C22/50
Abstract:
The invention provides a method and composition for coating a ferrous metal surface with a zirconium/vanadium conversion coating which is substantially free of an organic film forming composition and tannins. The method is a low temperature method which contemplates an aqueous conversion coating composition which is low in phosphates and which comprises zirconium, vanadium, fluoride, as well as phosphate ions in a ratio and a concentration effective for providing a conversion-coated ferrous metal surface.
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