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CERIUM CONVERSION COATINGS FOR USE IN CORROSION PROTECTION OF ALUMINUM ALLOYS

标题

ADDITIVE-ASSISTED CERIUM-BASED ELECTROLYTIC COATING PROCESS FOR CORROSION PROTECTION OF ALUMINUM ALLOYS

详细技术说明

None

*Abstract

Abstract of US Patent 6,818,116 - Additive-assisted cerium-based electrolytic coating process for corrosion protection of aluminum alloys: The corrosion resistance of an aluminum or aluminum alloy component is enhanced by immersing an aluminum alloy to act as a cathode and an oxygen-evolving anode in an electrolyte comprising water, cerium ions, and an additive selected from among animal gelatin, derivatives of animal gelatin, and amino acids, then passing an electrical current through the electrolyte to deposit a cerium-based coating onto the aluminum-based component.Abstract of US Patent 5,932,083 - Electrodeposition of cerium-based coatings for corrosion protection of aluminum alloys: A process for enhancing the corrosion resistance of an aluminum-containing component with a cerium based coating. An aluminum-containing cathode and an oxygen-evolving anode are immersed in an electrolyte comprising water, solvent, oxidizing agent and cerium ions. An electrical current is passed through the electrolyte by applying electrical current to deposit a cerium based coating onto the cathode. An electrolyte for use in depositing a cerium based coating. An electrodeposited cerium-based coating. An aluminum aircraft structural component having a cerium-based coating thereon.Non-Confidential Abstract of Invention: A conversion coating employing cerium salts as the primary active agents has been developed to improve the resistance of aluminum to corrosion. The main use of the coating would be as a substitute for the environmentally undesirable chromate materials now being used. The cerium is deposited by means of an electrochemical process.

*IP Issue Date

Nov 16, 2004

*IP Publication Date

Feb 12, 2004

*Principal Investigation

Name: James Stoffer, Curators' Professor

Department:

Name: Thomas O'Keefe, Curatorss' Professor Emeritus

Department:

Name: XUAN LIN

Department:

Name: Eric Morris

Department:

Name: Pu Yu

Department:

Name: SRINIVAS SITARAM

Department:

Name: Scott Hayes

Department:

Name: Alexander Williams

Department:

附加资料

Patent Number: US5932083A
Application Number: US1997928899A
Inventor: Stoffer, James O. | O'Keefe, Thomas J. | Lin, Xuan | Morris, Eric | Yu, Pu | Sitaram, Srinivas Pravin
Priority Date: 12 Sep 1997
Priority Number: US5932083A
Application Date: 12 Sep 1997
Publication Date: 3 Aug 1999
IPC Current: C23C002800 | C25D000300 | C25D001118
US Class: 205261 | 205194 | 205203
Assignee Applicant: The Curators of the University of Missourilumbia
Title: Electrodeposition of cerium-based coatings for corrosion protection of aluminum alloys
Usefulness: Electrodeposition of cerium-based coatings for corrosion protection of aluminum alloys
Summary: The components are used in aerospace and comprise aircraft skin and bulk structural pieces.
Novelty: Increasing corrosion resistance of components containing aluminium

主要类别

化工/材料

细分类别

化工/材料应用

申请日期

Aug 8, 2002

申请号码

6,818,116

其他

国家/地区

美国