Boron suboxide composite material

US8426330B2 · kind B2 · utility

Inventors

• Anthony Clive Andrews · Milnerton, ZA
• Iakovos Sigalas · Johannesburg, ZA
• Mathias Herrmann · Sachsen, DE

Key dates

• Filing date: Apr 24, 2008
• Grant date: Apr 23, 2013
• Expiry date: Apr 1, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2982
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention provides a boron suboxide composite material comprising boron suboxide and a secondary phase, wherein the secondary phase contains a rare earth metal oxide. The rare earth metal oxide may be selected from the oxides of scandium, yttrium, which is preferred, and elements of the lanthanide series, and may be a mixture of rare earth metal oxides. The secondary phase may also include, in addition to the rare earth metal oxide(s), a further oxide or mixture of oxides of an element of the Groups IA, MA, MIA, and IVA of the periodic table. Moreover, the secondary phase may also contain a boride, and particularly a boride selected from the borides of transition metals of the fourth to eighth groups of the periodic table.