Cercitrate, process for the manufacture and corrosion inhibitor with cercitrate
Patent Information
- Application Number
- DE602017087203
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2016-06-06
- Filing Date
- 2017-06-06
- Publication Date
- 2025-01-01
- Estimated Expiration
- 2037-06-06
AI Technical Summary
Existing corrosion inhibitors for metallic alloys, such as those using hexavalent chromium, are either ineffective or pose health risks, and alternative methods like cerium citrate synthesis with cerium chloride or nitrate introduce negative ions that compromise corrosion protection.
A method of synthesizing cerium citrate using cerium carbonate and citric acid to produce a hydrate form with high water content, free of negative ions, which is then combined with anodic inhibitors like zinc molybdate and applied as a corrosion inhibitor composition.
The method results in a corrosion inhibitor that effectively prevents corrosion on aluminum alloys by avoiding negative ion adsorption, enhancing protection and performance compared to traditional synthesis methods.