National Center for Manufacturing Sciences

Other

Jerome Joseph Moleski

Thomas Hubert Van Steenkiste

John Robert Smith

Daniel William Gorkiewicz

Richard Earl Teets

Frederick E Pinkerton

Martin Stephen Meyer

A low porosity, strong, composite magnetostrictive coating is formed on a substrate by low temperature, high velocity spraying of a particulate mixture of a magnetostrictive REFe composition and a strong metallic matrix material. The practice is particularly useful for forming circumferential bands of composite magnetostrictive material on a round shaft such as an automobile steering column. An example of a composite material is the magnetostrictive SmFe compound and iron or copper as the strengthening matrix material.

Method of forming a magnetostrictive composite coating

An apparatus is disclosed for kinetic spray coating of substrate surfaces by impingement of air or gas entrained powders of small particles in a range up to at least 106 microns accelerated to supersonic velocity in a spray nozzle. Preferably powders of metals, alloys, polymers and mixtures thereof or with semiconductors or ceramics are entrained in unheated air and passed through an injection tube into a larger flow of heated air for mixing and acceleration through a supersonic nozzle for coating of an article by impingement of the yieldable particles. A preferred apparatus includes a high pressure air supply carrying entrained particles exceeding 50 microns through an injection tube into heated air in a mixing chamber for mixing and acceleration in the nozzle. The mixing chamber is supplied with high pressure heated air through a main air passage having an area ratio relative to the injection tube of at least 80/1.

Kinetic spray coating apparatus

A method and apparatus is disclosed for kinetic spray coating of substrate surfaces by impingement of air or gas entrained powders of small particles in a range up to at least 106 microns accelerated to supersonic velocity in a spray nozzle. Preferably powders of metals, alloys, polymers and mixtures thereof or with semiconductors or ceramics are entrained in unheated air and passed through an injection tube into a larger flow of heated air for mixing and acceleration through a supersonic nozzle for coating of an article by impingement of the yieldable particles. A preferred apparatus includes a high pressure air supply carrying entrained particles exceeding 50 microns through an injection tube into heated air in a mixing chamber for mixing and acceleration in the nozzle. The mixing chamber is supplied with high pressure heated air through a main air passage having an area ratio relative to the injection tube of at least 80/1.

Kinetic spray coating method and apparatus

Growing community of inventors

Clinton Township, MI, United States of America

Jerome Joseph Moleski