Kennametal Inc.

Danie Jacobus Dewet

James B C Wu

David A Lee

Heidi Lynette De Villiers-Lovelock

A multilayer, wear- and corrosion-resistant coating on a metal substrate comprising a first metal coating layer comprising a composite carbide material; a second metal coating layer over the first metal coating layer comprising at least about 50 wt % of a metal selected from the group consisting of Co, Ni, and Fe; and a surface metal coating layer comprising a cemented carbide material having a third-layer carbide material and a third-layer Co-based or Ni-based binder material.

Spallation-resistant multilayer thermal spray metal coatings

A wear- and corrosion-resistance coating over a metal substrate having a first-layer carbide material, a second metal coating layer over the first metal coating layer, and a surface metal coating layer over the second metal coating layer; and thermal spray method for applying the coating.

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Kingston, Canada

Danie Jacobus Dewet