Making fine particulate aluminum nitride

A method of making fine particulate aluminum nitride, including the steps of reacting gaseous aluminum trichloride introduced via conduit (18) with aluminum-containing metallic material (12) at elevated temperature in a reactor (10) to convert some of the trichloride to monochloride gas; introducing...

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Bibliographic Details
Main Authors SOOD, RAMAN RADHA, SOUTHAM, FREDERICK WILLIAM, RAGHAVAN, NARASIMHA SRINIVASA
Format Patent
LanguageEnglish
French
German
Published 22.03.1989
Edition4
Subjects
CHEMISTRY
COMPOUNDS THEREOF
INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OFSOLID INORGANIC COMPOUNDS
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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Summary:A method of making fine particulate aluminum nitride, including the steps of reacting gaseous aluminum trichloride introduced via conduit (18) with aluminum-containing metallic material (12) at elevated temperature in a reactor (10) to convert some of the trichloride to monochloride gas; introducing a gaseous nitrogen source via conduit (22) to the monochloride-containing gas for reacting nitrogen with the monochloride to form fine particulate aluminum nitride in the reactor (10); conducting a flow of gas (19) comprising aluminum trichloride having the particulate nitride entrained therein to a cooling locality (24); there condensing the trichloride and accumulating the condensed trichloride and particulate nitride; and periodically reevaporating and removing the trichloride from the cooling locality (24) for separating out and recovering the accumulated nitride. The reevaporated trichloride is conducted to a condenser vessel (30) and collected in receptacle (34).
Bibliography:Application Number: EP19880308209