General Electric Company

Michael Francis X Gigliotti, Jr

Shyh-Chin Huang

Lawrence Bernard Kool

Thomas James Batzinger

Stephen Francis Rutkowski

Robert S Gilmore

Richard DiDomizio

Paul Steven Svec

Josef Robert Unternahrer

Phillip Randall Staver

Roger John Petterson

William Taylor Lotshaw

William Randall Thompson

Anatoli Kogan

David Carr

Brian Stephen Noel

An organic coating composition is described, which can be used to enrich the surface region of a metal-based substrate with aluminum. The composition comprises an aluminum-based powder and at least one organic resin, e.g., alkyds, epoxies, or silicone materials. At least some of the aluminum-based powder is in the form of substantially spherical powder particles. The coating composition is substantially free of hexavalent chromium. It can be applied to the substrate by a variety of techniques, such as spraying. It is then heat-treated, to cause diffusion of aluminum into the surface region of the substrate, e.g., a turbine engine component. The composition exhibits good thermal and chemical stability for extended periods of time. Related articles are also described.

Organic coating compositions for aluminizing metal substrates, and related methods and articles

A mold is provided for enabling casting of single crystal metallic articles including a part-defining cavity, a sorter passage positioned vertically beneath and in fluid communication with the part-defining cavity, and a seed cavity positioned vertically beneath and in fluid communication with the sorter passage. The sorter passage includes a shape suitable for encouraging a single crystal structure in solidifying molten metal. Additionally, a portion of the mold between the sorter passage and the part-defining cavity includes a notch for facilitating breakage of a cast article proximate the notch during thermal stress build-up, so as to prevent mold breakage or the inclusion of part defects.

Apparatus and method for producing single crystal metallic objects

A method for laser shock peening a surface is disclosed. A laser beam pulse from a laser apparatus is produced. The laser pulse has a cross-section taken perpendicular to the laser beam, a fluence profile across the cross-section. The pulse against an area on said surface. The fluence profile is controlled such that process induced defects are reduced.

Laser shock peening method and apparatus

Growing community of inventors

Scotia, NY, United States of America

Michael Francis X Gigliotti, Jr