Rare earth oxide fluoride nanoparticles and hydrothermal method for forming nanoparticles

US6316377A · kind A · utility

Assignee

• Battelle Memorial Institute · CH

Inventors

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

Key dates

• Filing date: Sep 10, 1999
• Grant date: Nov 13, 2001
• Expiry date: Sep 10, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/5296
• 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.