The Valeron Corporation

Crucible Materials Corporation

Crucible Corporation

Frederick C Holtz, Jr

Dennis J Rich

James H Adams, Sr

Fully dense consolidated powder alloys of iron, cobalt and/or nickel characterized by having an ultrafine microstructure exhibiting a substantially uniformly dispersed harding phase of particle size essentially less than 3 microns, are produced from prealloyed powders by rapidly quenching an atomized molten alloy charge and subjecting the solidified alloy powder particles to the step of hot consolidation to produce substantially fully dense metal stock directly from prealloyed powder.

Alloy composition and process

Sintered high speed tool steel alloy composition

High-toughness, high-wear resistance cutting tool based on alumina are formed by additions of zirconia and optionally refractory metal carbides or nitrides.

High toughness ceramic cutting tool

Extremely tough, strong and wear resistant cold pressed and sintered inserts consisting essentially of from about 4 to 20% zirconia, from about 1-15% titanium diboride, and up to about 10% grain growth inhibiting sintering aid with the balance being alumina.

Growing community of inventors

Birmingham, MI, United States of America

Frederick C Holtz, Jr