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(Ti,M)C nano solid solution powder and preparation method thereof

A solid solution and powder technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problem of high synthesis temperature of carbide powder, achieve easy carbon content, stable process, and precise control of carbon content Effect

Active Publication Date: 2018-03-06
自贡市泰昶硬质材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the above-mentioned deficiencies existing in the prior art, the purpose of the present invention is to provide a kind of (Ti, M) C nanometer solid solution powder and preparation method thereof, solve the problem that the existing carbide powder synthesis temperature is high

Method used

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  • (Ti,M)C nano solid solution powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In this embodiment, (Ti, M) C solid solution powder is prepared with Ti powder, W powder and carbon black powder, and the steps are as follows:

[0022] (1) Put 25.98g of Ti powder, 14g of W powder, and 10.02g of carbon black powder into a ball mill tank filled with 60mL of absolute ethanol, and perform high-energy ball milling for 6 hours with a ball-to-material ratio of 15:1 and a milling speed of 600 rpm / min, wherein Ti powder, W powder, carbon black powder particle size is -200 mesh;

[0023] (2) After ball milling, place the mixed slurry in a vacuum drying oven and dry at 50°C for 3 hours to obtain a highly reactive block mixture;

[0024] (3) Fill the 1 / 4 volume of the ceramic crucible with the above block mixture, and cover and fill the upper layer of the crucible with NaCl and KCl mixed powder with a molar ratio of 1:1; In the muffle furnace, keep warm at 900°C for 4 hours to carry out carbonization and solid solution reaction, and generate carbide solid solut...

Embodiment 2

[0028] In this embodiment, (Ti, M) C solid solution powder is prepared with Ti powder, Mo powder, Nb powder and carbon black powder, and the steps are as follows:

[0029] (1) Put 33.98g of Ti powder, 4g of Mo powder, 2g of Nb powder, and 10.02g of carbon black powder into a ball mill tank filled with 60mL of absolute ethanol, and perform high-energy ball milling for 8 hours with a ball-to-material ratio of 10:1. The rotating speed is 450 revs / min, wherein the Ti powder, Mo powder, Nb powder, and carbon black powder have a particle size of -250 mesh;

[0030] (2) After ball milling, place the mixed slurry in a vacuum drying oven and dry at 80°C for 1 hour to obtain a highly reactive block mixture;

[0031] (3) Fill 1 / 3 of the volume of the ceramic crucible with the above block mixture, and use NaCl and BaCl with a molar ratio of 1:1 2 The mixed powder covers and fills the upper layer of the crucible; then the crucible is tightly covered and placed in a muffle furnace with a f...

Embodiment 3

[0034] In this embodiment, (Ti, M) C solid solution powder is prepared from Ti powder, Ta powder, Cr powder, V powder and carbon black powder, and the steps are as follows:

[0035] (1) Put 36.78g of Ti powder, 2g of Ta powder, 1.2g of Cr powder, 0.4g of V powder and 10.02g of carbon black powder into a ball mill tank filled with 60mL of absolute ethanol, and perform high-energy ball milling for 10 hours. The ratio is 12:1, the ball milling speed is 300 rpm, and the particle sizes of Ti powder, Ta powder, Cr powder, V powder and carbon black powder are all -325 mesh;

[0036] (2) After ball milling, place the mixed slurry in a vacuum drying oven and dry at 80°C for 1 hour to obtain a highly reactive block mixture;

[0037] (3) Fill the 1 / 2 volume of the ceramic crucible with the above block mixture, cover and fill the upper layer of the crucible with NaCl powder; then cover the crucible tightly and place it in a muffle furnace with a flowing Ar atmosphere, at 1000 °C Insulate f...

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Abstract

The invention discloses (Ti,M)C nano solid solution powder and a preparation method thereof. The (Ti,M)C nano solid solution powder is prepared from the following components in percentage by weight: 35 to 79.9 percent of Ti, 0.1 to 35 percent of M and the balance of C, wherein the M is at least one of W, Mo, Cr, Ta, V and Nb. The preparation method comprises the following steps of mixing Ti powder, carbon black powder and a powdery raw material of the component M, carrying out high-energy ball milling, drying a mixture obtained after the ball milling, then putting the dried mixture into a crucible, adding a halogenating agent, afterwards, in the protection condition of an Ar gas, carrying out heat preservation for 2h to 4h at 900 to 1,000 DEG C, so as to obtain halogenating agent mixed (Ti,M)C nano solid solution powder, finally, dissolving the halogenating agent by using distilled water, centrifuging and drying, so that the (Ti,M)C nano solid solution powder is subsequently obtained.The method provided by the invention can be used for completing the carbonization and solid-solution reactions of (Ti,M)C at 900 to 1,000 DEG C; the prepared (Ti,M)C solid solution powder has the characteristic of a single-phase component and has the average particle size which is less than 100nm; the powder is high in purity and the content of the C is easy to precisely regulate and control.

Description

technical field [0001] The invention belongs to the field of metallurgical materials, and in particular relates to a (Ti, M)C nanometer solid solution powder and a preparation method thereof. Background technique [0002] Titanium carbide (TiC) has the advantages of high melting point and high hardness. It is mainly used as dispersion strengthening particles of steel materials, cemented carbide additives and component powders of cermets, etc., to improve the strength, toughness and wear resistance of materials. , It has a wide range of uses in industrial fields such as automobiles, electronics, machinery, metallurgy, aerospace, and new materials. However, the poor interfacial bonding between TiC powder and matrix materials is still a technical bottleneck hindering its industrial application. This interfacial bonding is closely related to the solubility, wettability, interfacial reactivity, and compatibility between phases (such as thermal expansion coefficient, thermal cond...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/907B82Y30/00
CPCB82Y30/00C01P2002/72C01P2004/03
Inventor 金永中蒋小朗郑星龙杨林李介文
Owner 自贡市泰昶硬质材料有限责任公司
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