Low absorption spinel formed by acidic and basic treatments

US10486977B2 · kind B2 · utility

Assignee

• The Government of the United States of America, as represented by the Secretary of the Navy · US

Inventors

• Woohong Kim · Lorton, US
• Guillermo R. Villalobos · Springfield, US
• Colin C. Baker · Alexandria, US
• Shyam S. Bayya · Ashburn, US
• Michael Hunt · Alexandria, US
• Bryan Sadowski · Falls Church, US
• Ishwar D. Aggarwal · Waxhaw, US
• Jasbinder S. Sanghera · Greenbelt, US

Key dates

• Filing date: Jul 26, 2016
• Grant date: Nov 26, 2019
• Expiry date: Mar 9, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/9653
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method of purifying a spinel powder includes contacting a spinel powder with an acid solution to form an acid-washed spinel composition and contacting the acid-washed spinel composition with a basic solution to form a purified composition. The purified powder is suited to formation of low-absorption shaped bodies, such as windows for high intensity laser devices.