초록 ▼

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 REFe2 composition and a strong metallic matrix material. The practice is particularly useful for forming circumferential bands

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 REFe2 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 SmFe2 compound and iron or copper as the strengthening matrix material.

대표청구항 ▼

1. A method of forming a composite coating of magnetostrictive material on a substrate, said method comprising spraying a powder mixture of magnetostrictive REFe2 particles and matrix metal particles carried in a spray gas stream flowing at supersonic velocity against a substrate to form an adherent

1. A method of forming a composite coating of magnetostrictive material on a substrate, said method comprising spraying a powder mixture of magnetostrictive REFe2 particles and matrix metal particles carried in a spray gas stream flowing at supersonic velocity against a substrate to form an adherent coating on said substrate of said REFe2 particles embedded in a matrix of said metal, where RE is one or more rare earth elements including yttrium, and the magnetostrictive character of said ReFE2 particles is retained in said coating.