Coated article with enhanced oxidation resistance properties

US12410511B2 · kind B2 · utility

Assignee

• Oerlikon Surface Solutions AG, Pfäffikon · CH

Inventors

• Thomas Glechner · Wien, AT
• Jurgen Ramm · Maienfeld, CH
• Hans-Georg Oemer · Kronstorfberg, AT
• Helmut Riedl-Tragenreif · Kirchberg am Walde, AT
• Oliver HUNOLD · Wädenswil, CH
• Mirjam Arndt · Bad Ragaz, CH
• Peter Polcik · Reutte, AT

Key dates

• Filing date: Sep 22, 2022
• Grant date: Sep 9, 2025
• Expiry date: Sep 22, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23C14/5806
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A coated article includes a coated surface which consists of a substrate and a coating system. The coating system has at least one protective layer consisting of one or more transition metal borides and one dopant element, wherein: 13 the protective layer having chemical element composition defined by the formula TMxBySiq, where TM is one or more of the transition metal elements Chromium and Hafnium; Si is Silicon present in the protective layer as the dopant element; B is Boron; x is the concentration in atomic percent of TM; y is the concentration in atomic percent of B; and q is the concentration in atomic percent of Si, where x+y+q=1, 0.15≤x≤0.33, 0.40≤y≤0.67, and 0.1≤q≤0.40, and—the atomic concentration ratio of boron to the transition metals in the protective layer is higher or equal to 2, i.e. y/x≥2, and—the protective layer exhibits an AlB2 crystal structure.