Preparation method of ferrum-aluminum titanium carbide composite material

A composite material and titanium carbide technology, which is applied in the field of preparation of Fe3Al-TiC composite materials, can solve problems such as the reduction of plasticity at room temperature, and achieve the effect of improving hardness

Inactive Publication Date: 2013-06-26
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lack of low high temperature strength of the alloy can be made up for by ceramic reinforcement, but the ro

Method used

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  • Preparation method of ferrum-aluminum titanium carbide composite material
  • Preparation method of ferrum-aluminum titanium carbide composite material
  • Preparation method of ferrum-aluminum titanium carbide composite material

Examples

Experimental program
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Effect test

Example Embodiment

[0011] Example 1:

[0012] Weigh the mass percentage Fe 3 85% of Al powder and 15% of TiC powder are put into a sealed tank, and dry mixed in a ball mill for 4 hours at a speed of 200r / min to obtain Fe 3 The composite powder of Al and 15% TiC, the mixed composite powder is put into a graphite mold, and placed in a vacuum hot press sintering furnace for hot press molding and sintering, the vacuum degree is 1×10 -1 Pa, the heating rate is 10°C / min, the sintering temperature is 1250°C, the sintering pressure is 30MPa, and the sintering time is 30min. After sintering, cool to room temperature and take out the material to obtain Fe 3 Al-15%TiC composite material, the material properties are given in the table below.

[0013]

Example Embodiment

[0014] Example 2:

[0015] Weigh the mass percentage Fe 3 Al powder 75%, TiC powder 25%, put into a sealed tank, dry mixed in a ball mill for 6 hours, the speed of which is 200r / min, to obtain Fe 3 The composite powder of Al and 25% TiC, put the mixed composite powder into a graphite mold, and place it in a vacuum hot-pressing sintering furnace for hot-press molding and sintering, the vacuum degree is 1×10 -1 Pa, the heating rate is 10°C / min, the sintering temperature is 1300°C, the sintering pressure is 35MPa, and the sintering time is 35min. After sintering, cool to room temperature and take out the material to obtain Fe 3 Al-25%TiC bulk composite material, the material properties are given in the table below.

[0016]

Example Embodiment

[0017] Example 3:

[0018] Weigh the mass percentage Fe 3 Al powder 65%, TiC powder 35%, put into a sealed tank, dry mixed in a ball mill for 6 hours, the speed of which is 250r / min, to obtain Fe 3 The composite powder of Al and 35% TiC, put the mixed composite powder into a graphite mold, and place it in a vacuum hot-press sintering furnace for hot-press molding and sintering, the vacuum degree is 1×10 -2 Pa, the heating rate is 15°C / min, the sintering temperature is 1300°C, the sintering pressure is 40MPa, and the sintering time is 40min. After sintering, the furnace is cooled to room temperature, and the material is taken out to obtain Fe 3 Al-35%TiC bulk composite material, the material properties are given in the table below.

[0019]

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Abstract

The invention discloses a preparation method of a ferrum-aluminum titanium carbide composite material. According to the preparation method, a TiC ceramic phase is added in order to improve the hardness, the strength and the abrasion resistance of a Fe3Al composite material. The composite material is excellent in chemical performance, has the hardness of 4.70 to 11.50Gpa, bending strength of 1000 to 1400MPa, compressive strength of 1600 to 1900MPa, and relative density up to more than 99%, and has outstanding resistance to high temperature oxidation, resistance to high temperature corrosion and high wear resistance, and is also a high-temperature structural material with important potential application. The preparation method is expected to being widely applied to the aviation field and the high-temperature wear resisting field, such as a high-temperature bearing, a shaft sleeve, a bearing bush and a seal component.

Description

technical field [0001] The present invention describes a Fe 3 The preparation method of the Al-TiC composite material, the prepared composite material has high strength, hardness and excellent wear resistance, and can be used as a wear-resistant, high-temperature-resistant and corrosion-resistant structural component. Background technique [0002] Because Fe 3 Al has light weight, high specific strength, low cost (does not contain strategic elements), low thermal expansion coefficient, good thermal stability and thermal conductivity, electrical conductivity, and wear resistance and resistance to oxidation, corrosion and sulfur under high temperature conditions A series of advantages such as corrosion, and the raw material resources are abundant and the price is low, so the preparation and production of Fe 3 Al-based composite materials are more economical and easy to promote and apply, so they have received widespread attention in recent years and are expected to become ne...

Claims

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Application Information

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IPC IPC(8): C22C32/00C22C1/05C22C38/14C22C33/02
Inventor 杨军刘维民张兴华毕秦岭马吉强
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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