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TiNx-Ti3SiC2 composite material and preparation method of TiNx-Ti3SiC2 composite material

A technology of composite materials and raw materials, applied in the field of composite materials, can solve problems such as low strength, poor wear resistance, and low material hardness, and achieve the effects of improving friction and wear performance, self-lubricating performance, and low preparation cost

Active Publication Date: 2020-04-10
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But Ti 3 SiC 2 The material has performance defects such as low hardness, low strength and poor wear resistance, which lead to Ti 3 SiC 2 The scope of application is limited by the larger bureau

Method used

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  • TiNx-Ti3SiC2 composite material and preparation method of TiNx-Ti3SiC2 composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] First, prepare TiN 0.3 powder. Weigh the Ti powder and urea according to the molar ratio of n(Ti):n(urea)=6:1 in the Ar gas environment of the glove box, and put the weighed raw materials into the WC hard disk in the Ar gas environment of the glove box. Then, put WC cemented carbide balls in the ball mill jar (the diameter of the large ball is 8mm; the diameter of the small ball is 5mm; the mass ratio of the large and small balls is 7:3). The mass ratio of ball to material is 20:1. And add dispersant in raw material powder, described dispersant is industrial ethanol (purity is analytical grade), and dispersant addition is to add 0.4mL in every 100g mixed powder. Then, it is ball milled at a uniform speed on a ball mill. The speed of the ball mill is 400r / min; the ball milling time is 50h; each revolution is 60min, stop for 20min to dissipate heat; and run alternately forward and reverse to produce TiN finer than 150nm 0.3 powder.

[0045] Second, the preparation of...

Embodiment 2

[0049] First, prepare TiN 0.3 powder. In the Ar gas environment of the glove box, the Ti powder and urea are weighed according to the molar ratio of n(Ti):n(urea)=6:1, and the weighed raw materials are put into the WC in the Ar gas environment of the glove box. Carbide ball milling jar; then, put WC carbide balls (large ball diameter 8mm; small ball diameter 5mm; mass ratio of large and small balls is 7:3) in the ball mill jar. The mass ratio of ball to material is 20:1. And add dispersant in raw material powder, described dispersant is industrial ethanol (purity is analytical grade), and dispersant addition is to add 0.4mL in every 100g mixed powder. Then, it is ball milled at a uniform speed on a ball mill. The speed of the ball mill is 400r / min; the ball milling time is 50h; each revolution is 60min, stop for 20min to dissipate heat; and run alternately forward and reverse to produce TiN finer than 150nm 0.3 powder.

[0050] Second, the preparation of TiN 0.3 -Ti 3 SiC...

Embodiment 3

[0054] First, prepare TiN 0.3 powder. In the Ar gas environment of the glove box, the Ti powder and urea are weighed according to the molar ratio of n(Ti):n(urea)=6:1, and the weighed raw materials are put into the WC in the Ar gas environment of the glove box. Carbide ball milling jar; then, put WC carbide balls (large ball diameter 8mm; small ball diameter 5mm; mass ratio of large and small balls is 7:3) in the ball mill jar. The mass ratio of ball to material is 20:1. And add dispersant in raw material powder, described dispersant is industrial ethanol (purity is analytical grade), and dispersant addition is to add 0.4mL in every 100g mixed powder. Then, it is ball milled at a uniform speed on a ball mill. The speed of the ball mill is 400r / min; the ball milling time is 50h; each revolution is 60min, stop for 20min to dissipate heat; and run alternately forward and reverse to produce TiN finer than 150nm 0.3 powder.

[0055] Second, the preparation of TiN 0.3 -Ti 3 S...

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Abstract

The invention discloses a TiNx-Ti3SiC2 composite material and a preparation method thereof, and belongs to the technical field of composite materials. The composite material is composed of a TiNx reinforced phase and a Ti3SiC2 matrix, wherein 0.3 < = x < = 0.9 or 1.1 < = x < = 1.3. The preparation method of the TiNx-Ti3SiC2 composite material comprises the following steps that S1, Ti powder and urea are subjected to ball milling to prepare TiNx powder, S2, TiNx-Ti3SiC2 mixed raw material powder is prepared, S3, the TiNx-Ti3SiC2 mixed powder is pretreated, and S4, the TiNx-Ti3SiC2 composite material is prepared through SPS sintering. The preparation method disclosed by the invention is simple to operate and short in preparation period, and the prepared TiNx-Ti3SiC2 composite material not only has relatively low friction coefficient and wear rate under the condition of room temperature, but also has the properties of high bearing capacity, high strength and the like, and is suitable forbatch production of friction-reducing and wear-resisting materials such as friction plates under severe working conditions.

Description

technical field [0001] The invention belongs to the technical field of composite materials, in particular to a Ti 3 SiC 2 Composite materials and methods for their preparation. Background technique [0002] Ti 3 SiC 2 Ti 3 SiC 2 Not only has metal properties such as thermal conductivity, electrical conductivity and good machinability comparable to metal materials, but also has good corrosion resistance, oxidation resistance and high strength stability of ceramic materials. But Ti 3 SiC 2 The material has performance defects such as low hardness, low strength and poor wear resistance, which lead to Ti 3 SiC 2 The scope of application is limited by larger bureaus. While the Ti prepared by adding the reinforcing phase 3 SiC 2 matrix composites improve the Ti 3 SiC 2 The performance defect of the material has the advantages of high hardness, strength and good wear resistance, which expands the Ti 3 SiC 2 field of application. [0003] at Ti 3 SiC 2 In the stud...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/56C04B35/58C04B35/622C04B35/626C04B35/64
CPCC04B35/5615C04B35/58014C04B35/622C04B35/62605C04B35/64C04B2235/666
Inventor 李艳国邹芹邹娟王明智赵玉成娄志超
Owner YANSHAN UNIV
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