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TiAl/Ti3SiC2 composite plate material and preparation method thereof

A composite plate, a combined technology, applied in chemical instruments and methods, layered products, ceramic layered products, etc., can solve the problems of blank preparation methods, and achieve the effects of good diffusion ability, less impurities, and uniform performance distribution.

Active Publication Date: 2014-09-24
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation of layered composite materials is concentrated in the field of intermetallic compound composite plates. The preparation method of TiAl / Ti3SiC2 cermet layered composite materials is still blank. The present invention proposes a method for preparing TiAl by using a pre-coated powder method. / Ti3SiC2 composite sheet method

Method used

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  • TiAl/Ti3SiC2 composite plate material and preparation method thereof
  • TiAl/Ti3SiC2 composite plate material and preparation method thereof
  • TiAl/Ti3SiC2 composite plate material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0026] Ti 3 SiC 2 The composition of the ceramic raw material powder is Ti, Si and C powder, wherein the molar percentage of Ti is 50%, the molar percentage of Si is 17%, and the molar percentage of C is 33%. The weighed powder is mixed with an appropriate amount of absolute ethanol, and then the mixture is placed on an electromagnetic stirring device for electromagnetic stirring. Stirring time is not less than 24 hours. After fully stirring, the mixture was put into a drying oven, and dried at 75° C. for 24 hours. After the powder is completely dry, take it out and put it into a Φ60mm graphite mold, use a tablet press to hold the pressure for 10 minutes under a pressure of 5MPa, and compact the powder to obtain Ti 3 SiC 2 The raw material of ceramics. The composition of the TiAl raw material powder is Ti powder and Al powder, wherein the mole percentage of Ti is 51%, and the mole percentage of Al is 49%. Mix the weighed powder with an appropriate amount of absolute etha...

Embodiment 2

[0035] (1) Ti 3 SiC 2 The composition of the ceramic raw material powder is Ti, Si and C powder, wherein the molar percentage of Ti is 50%, the molar percentage of Si is 17%, and the molar percentage of C is 33%. The weighed powder is mixed with an appropriate amount of absolute ethanol, and then the mixture is placed on an electromagnetic stirring device for electromagnetic stirring. Stirring time is not less than 24 hours. After fully stirring, the mixture was put into a drying oven, and dried at 75° C. for 24 hours. After the powder is completely dry, take it out and put it into a Φ60mm graphite mold, use a tablet press to hold the pressure for 10 minutes under a pressure of 5MPa, and compact the powder to obtain Ti 3 SiC 2 The raw material of ceramics. (2) The composition of the TiAl raw material powder is Ti powder and Al powder, wherein the molar percentage of Ti is 51%, and the molar percentage of Al is 49%. Mix the weighed powder with an appropriate amount of abs...

Embodiment 3

[0044] Ti 3 SiC 2 The composition of the ceramic raw material powder is Ti, Si and C powder, wherein the molar percentage of Ti is 50%, the molar percentage of Si is 17%, and the molar percentage of C is 33%. The weighed powder is mixed with an appropriate amount of absolute ethanol, and then the mixture is placed on an electromagnetic stirring device for electromagnetic stirring. Stirring time is not less than 24 hours. After fully stirring, the mixture was put into a drying oven, and dried at 75° C. for 24 hours. After the powder is completely dry, take it out and put it into a Φ60mm graphite mold, use a tablet press to hold the pressure for 10 minutes under a pressure of 5MPa, and compact the powder to obtain Ti 3 SiC 2 The raw material of ceramics. The composition of the TiAl raw material powder is Ti powder and Al powder, wherein the molar percentage of Ti is 51%, and the molar percentage of Al is 49%. Mix the weighed powder with an appropriate amount of absolute et...

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Abstract

The invention relates to a TiAl / Ti3SiC2 composite plate material and a preparation method thereof, which belongs to the field of composite material preparation. The TiAl / Ti3SiC2 composite plate material comprises a TiAl base alloy layer and a Ti3SiC2 ceramic layer, wherein a raw material blank of Ti3SiC2 ceramic is overlapped with a raw material blank of TiAl base alloy; more than two layers are overlapped; an obtained layered blank material is subjected to vacuum hot-pressing and sintering for 1-3 hours at 1400-1600 DEG C under the sintering pressure of 20-30MPa, thereby obtaining the TiAl / Ti3SiC2 composite plate material. The preparation of the TiAl / Ti3SiC2 composite plate material can be accomplished by one-time operation, the production process is simple and feasible, and the preparation cost is low. The preparation process is free of pollution, the composite plate material is good in boundary binding, and the number of alternative overlapped layers of the TiAl layers and the Ti3SiC2 layers can be adjusted.

Description

technical field [0001] The present invention relates to a kind of TiAl / Ti 3 SiC 2 A composite board and a preparation method thereof belong to the field of composite material preparation. Background technique [0002] Ti3SiC2 has many advantages of both metal and ceramics, and is an excellent high-temperature structural ceramic material. However, due to its low hardness, high brittleness and low creep strength at room temperature, its application is seriously hindered, and the preparation of layered composites is an effective way to overcome the above defects. TiAl-based alloys are often used as strengthening phases of ceramic composites due to their high specific strength, specific stiffness, high yield strength and creep strength, and good oxidation resistance. More importantly, the thermal expansion coefficient of TiAl-based alloys is close to that of Ti3SiC2. At the same time, TiAl-based alloys have good stress compatibility with Ti3SiC2 ceramics, which can be used to...

Claims

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Application Information

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IPC IPC(8): B32B18/00B22F7/04C04B35/56C22C14/00
Inventor 陈国清付雪松于铁汤华平
Owner DALIAN UNIV OF TECH
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