Kennametal Inc.

David A Lee

James B C Wu

Heidi Lynette De Villiers-Lovelock

Danie Jacobus Dewet

Qingjun Zheng

Matthew Yao

Abdelhakim Belhadjhamida

Cobalt-based alloy compositions are described herein having properties compatible with thermal spray and sintering techniques. Such alloy compositions can provide claddings to a variety of metallic substrates having complex geometries, wherein the claddings exhibit desirable density, hardness, wear resistance and corrosion resistance. Briefly, an alloy composition described herein comprises 15-25 wt. % chromium, 15-20 wt. % molybdenum, 0-15 wt. % tungsten, 10-20 wt. % nickel, 2.5-3.5 wt. % boron, 2.5-4.5 wt. % silicon, 1-2 wt. % carbon and the balance cobalt, wherein a ratio of boron to silicon (B/Si) in the alloy composition ranges from 0.5 to 1.0.

Wear resistant and corrosion resistant cobalt-based alloy powders and applications thereof

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.

Growing community of inventors

Ligonier, IN, United States of America

David A Lee