Stabilized lanthanum sulphur compounds

US4545967A · kind A · utility

Assignee

• The United States of America as represented by the United States National Aeronautics and Space Administration · US

Inventors

• George H. Reynolds · Houston, US
• Norbert B. Elsner · Village of La Jolla, US
• Clyde H. Shearer · San Diego, US

Key dates

• Filing date: Feb 25, 1983
• Grant date: Oct 8, 1985
• Expiry date: Feb 25, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01F17/38
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Lanthanum sulfide is maintained in the stable cubic phase form over a temperature range of from 500.degree. C. to 1500.degree. C. by adding to it small amounts of calcium, barium, or strontium. This novel compound is an excellent thermoelectric material.