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2 163 181

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IPC

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Application

98101412/02, 1998-01-23

(24)

Start date

1998-01-23

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Actual filing date

1998-01-23

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Published

2001-02-20

(72)

Inventor

Amosov A.P.Bichurov G.V.Kosmacheva N.V.Trusov D.V.

(73)

Holder

Samarskij Gosudarstvennyj Tekhnicheskij Universitet

METHOD OF PRODUCING POWDER COMPOSITIONS BASED ON NITRIDES OF ELEMENTS Russian patent published in 2001 - IPC

Abstract RU 2163181 C2

FIELD: powder metallurgy, particularly, production of refractory materials; applicable in aerospace, chemical-metallurgical, tool making and other industries. SUBSTANCE: method includes preparation of exothermic mixture containing at least one powder of nitrided element and complex ammonium fluoride salt; ignition of mixture in nitrogen medium under pressure. In this case, exothermic mixture contains at least another nitrided element included into composition of complex ammonium fluoride salt or into composition of element fluoride, and azide of alkali or alkali-earth metal. EFFECT: increased degree of purity of desired products above 90% and higher safety of process. 2 tbl

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RU 2 163 181 C2

Authors

Amosov A.P.

Bichurov G.V.

Kosmacheva N.V.

Trusov D.V.

Dates

2001-02-20—Published

1998-01-23—Filed

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