Cladding of bearing metal and process for production thereof

US4900639A · kind A · utility

Assignees

• 501 Glyco-Metall-Werke Daelen · DE
• Loos & Co., Inc. · US

Inventors

• Erich Hodes · Rosbach, DE
• Ulrich Engel · Schlangenbad, DE
• Heiko Gruner · Stuttgart, DE

Key dates

• Filing date: Apr 22, 1988
• Grant date: Feb 13, 1990
• Expiry date: Apr 22, 2008

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/12903
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Leakproof, adhesive, non-lamellar and pore-free antifriction coatings can be produced from essentially oxidation-sensitive dispersion alloys, with at least two metallic alloy components forming a miscibility gap in the solid state, by means of vacuum plasma-spraying with a practically homogeneous material distribution. Precipitation crystallites of alloy components are significantly below 5 .mu.m and fringe-crystal growth is definitely inhibited. By adding hard particles during the coating process further dispersion consolidation can be achieved. Such antifriction coatings improve longevity, corrosion resistance and emergency lubrication of sliding surfaces without reducing their running-in characteristics and their ability to bed in foreign matter. They can be deposited individually on to sliding bearing components or continuously on to supporting strips.