Method for preparing monocrystalline aluminum nitride
Abstract
Abstract A PROCESS FOR PRODUCING ALUMINUM NITRIDE AND METAL FLUORIDE SINGLE CRYSTALS EITHER SEPARATELY OR SIMULTANEOUSLY. THE PROCESS COMPRISES CONTACTING A SUBVALENT ALUMINUM COMPOUND, I.E. WHERE AL EXHIBITS A VALENCE OF LESS THAN 3, IN A GASEOUS STATE WITH A NITRIDING AGENT IN A GASEOUS STATE WHILE PROVIDING AN INERT SURFACE ON WHIHC THE CRYSTALS CAN FORM. TO PREPARE METAL FLUORIDE CRYSTALS, A SUBVALENT ALUMINUM FLUORIDE COMPOUND IN A GASEOUS STATE IN CONTACTED WITH A METAL IN A GASEOUS STATE UNDER AN INERT ATMOSPHERE AND PROVIDING AN INERT SURFACE ON WHICH THE METAL FLUORIDE CRYSTALS CAN FORM. TO FORM THE TWO CRYSTALS SIMULTANEOUSLY THE LATTER PROCEDURE IS MODIFIED BY CARRYING OUT THE REACTION IN A NITRIDING ATMOSPHERE.
Inventors
- 👤 James O Huml
- 👤 Gilbert S Layne
Bibliographic Details
Claims Analysis
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