Rare earth oxide fluoride nanoparticles and hydrothermal method for forming nanoparticles

US6667019B2 · kind B2 · utility

Assignee

• Battelle Memorial Institute · CH

Inventors

• John L. Fulton · Northampton, US
• Markus Hoffmann · Wolfschlugen, DE

Key dates

• Filing date: Sep 7, 2001
• Grant date: Dec 23, 2003
• Expiry date: Sep 7, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S977/775
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A hydrothermal method for forming nanoparticles of a rare earth element, oxygen and fluorine has been discovered. Nanoparticles comprising a rare earth element, oxygen and fluorine are also described. These nanoparticles can exhibit excellent refractory properties as well as remarkable stability in hydrothermal conditions. The nanoparticles can exhibit excellent properties for numerous applications including fiber reinforcement of ceramic composites, catalyst supports, and corrosion resistant coatings for high-temperature aqueous solutions.