University of Missouri

Gm Global Technolgoy Operations, Inc.

Matthew J O'Keefe

Thomas J O'Keefe

William Gene Fahrenholtz

Surender Maddela

Carlos E Castano Londono

Xuan Lin

Hong-Hsiang Kuo

Eric L Morris

Yar-Ming Wang

James O Stoffer

Scott A Hayes

Paul Yu

Alex Williams

Berny F Rivera Vasquez

Jane G O'Keefe, Legal Representative

Embodiments relate to a cerium-containing nano-coating composition, the composition including an amorphous matrix including one or more of cerium oxide, cerium hydroxide, and cerium phosphate; and crystalline regions including one or more of crystalline cerium oxide, crystalline cerium hydroxide, and crystalline cerium phosphate. The diameter of each crystalline region is less than about 50 nanometers.

Multifunctional cerium-based nanomaterials and methods for producing the same

Mixed-metal automotive vehicle bodies-in-white comprising ferrous metal surfaces, zinc surfaces, aluminum alloy surfaces, and magnesium alloy surfaces are cleaned and immersed in an aqueous bath comprising an adhesion promoter and an aqueous electrocoat bath (the adhesion promoter may be in the electrocoat bath. The adhesion promoter, which may be a cerium salt, is selected to react with each metal in the body surfaces to form an oxide layer that provides corrosion resistance for the surface and adherence for the deposited polymeric paint coating. The body is cathodic in the electrocoat deposition.

Protective conversion coating on mixed-metal substrates and methods thereof

Electrocoating process for mixed-metal automotive bodies-in-white

A cerium-based coating for corrosion resistance is applied by exposing a cleaned aluminum-based component to a corrosion-inhibiting cerium solution containing cerium ions in the presence of an oxidizing agent. The coating deposits spontaneously without an external source of electrons.

Cerium-based spontaneous coating process for corrosion protection of aluminum alloys

Growing community of inventors

Rolla, MO, United States of America

Matthew J O'Keefe