Method for preparing Cr2AlC by molten salt process

A molten salt method and powder technology, which is applied in the field of non-oxygen ceramic powder preparation, can solve irrelevant Cr2AlC powder research reports and other problems, and achieve the effect of simple and easy preparation process, environmental protection and good powder activity
CN1884064AInactive Publication Date: 2006-12-27SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
Publication Date
2006-12-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparing method of Cr2AlC powder through molten salt method, which comprises the following steps: (1) adopting chromium powder, aluminum powder and graphite as raw material; allocating materials according to Cr2AlC chemical gauge with surplus aluminum; (2) heating to 900-1200 deg.c at 10-40 deg.c per min protected by Ar gas; insulating; cooling to prepare Cr2AlC powder. The invention can provide high-purity powder, which is fit for examining study and industrial manufacturing.
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Description

Technical field

[0001] The invention relates to a method for preparing high-purity aluminum carbon dichromium (Cr 2 AlC) powder method, more precisely, using chromium powder, aluminum powder and graphite as raw materials, through the molten salt method to prepare Cr 2 The weight percentage of AlC phase is greater than 90% of the powder. It belongs to the field of preparation of non-oxygen ceramic powder. Background technique

[0002] M n+1 AX n Series (M is a transition metal element, A is a IIIA or IVA element, X is a C or N) is a kind of promising structural and functional integration materials, because they have the plasticity, electrical conductivity, heat conduction and potential of metals. Processability, while having the high strength, low density and excellent high temperature resistance and oxidation resistance of ceramics.

[0003] Nowotny and its collaborators reported on it as early as the 1970s (H. Nowotny, "Struktuchemie Einiger Verbindungen der Ubergangsmetalle mit...

Claims

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