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Technological method for preparing TiX (X=c,N) compound powder by direct reducing washingtonite

A technology of composite powder and process method, applied in the field of preparation of TiX composite powder, can solve the problems of complex process conditions, high price and high energy consumption, and achieve the effects of simple and practical process, low cost and high resource utilization rate

Inactive Publication Date: 2002-12-18
CHONGQING UNIV
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Problems solved by technology

This process method can effectively solve key problems such as high energy consumption, complex process conditions, and high price in the preparation process of TiX (X=C, N) powder, and can effectively reduce TiC, TiN or Ti (C, N) powder body manufacturing cost

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  • Technological method for preparing TiX (X=c,N) compound powder by direct reducing washingtonite
  • Technological method for preparing TiX (X=c,N) compound powder by direct reducing washingtonite
  • Technological method for preparing TiX (X=c,N) compound powder by direct reducing washingtonite

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Embodiment Construction

[0009] Below in conjunction with accompanying drawing, the technical scheme of the present invention is further described: in the embodiment of the present invention, can carry out batching according to the molar ratio of ilmenite and graphite 1: 2.5~4.5, then mix the material for 5~50 hours, mix the material Put it in a reaction furnace, under the mixed atmosphere condition of 1450°C, react and synthesize for 0.5-10 hours, cool to room temperature and then process the sintered sample to obtain Fe-containing TiX composite powder. attached figure 1 The X-ray diffraction pattern of the given TiX composite powder shows that the TiX (X=C, N) composite powder containing Fe is obtained, with figure 2 "△" in △ indicates the diffraction peak of TiX, and "·" indicates the diffraction peak of Fe. The TiX composite powder containing Fe contained in the process method is leached in hydrochloric acid for 6 to 24 hours to obtain the TiX (X=C, N) powder.

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Abstract

The present invention relates to a technological process for prparing TiX(X=C and N) composite powder by means of direct reduction of titanic iron ore. Said invention uses titanic iron ore (FeTiO3) containing two main elements of Fe and Ti as raw material for reaction, under the condition of mixed atmosphere in the reaction furnace the TiX(X=C and N) composite powder body containing Fe can be synthesized. By utilizing the control of materials-mixing time, reaction temp., reaction time, reaction atmosphere and mixing ratio of titanic iron core and reducing agent the invented composite powder body whose components are uniform and grain size and C and N content can be controlled can be obtained. Said ivnention method is also applicable to preparation of TiC, TiN and Ti(C and N) powder bodiescontaining no Fe.

Description

Technical field [0001] The invention belongs to the preparation process of TiX (X=C, N) composite powder in powder metallurgy, in particular to a process for preparing TiX composite powder by direct reduction of ilmenite. Background technique [0002] In the prior art, the usual TiC, TiN and Ti(C, N) have the advantages of high strength, high hardness, high temperature resistance, acid and alkali resistance, wear resistance and good electrical and thermal conductivity, so they are widely used in the preparation of metal Ceramics, cutting tools, moulds, crucibles for smelting metals, electrodes for molten salt electrolysis of metals, etc. In recent years, the ultrafine powder of TiX has been used as a reinforcing phase of composite materials, and its development value and application prospects have attracted more and more attention. At present, the common method of preparing TiC (or TiN) powder is to use the Haijin-shaped titanium powder obtained by sodium reduction or the t...

Claims

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Application Information

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IPC IPC(8): C04B35/52C04B35/58
Inventor 潘复生汤爱涛李奎王雨张静丁培道庞华甄永达杨佳
Owner CHONGQING UNIV