TiAl intermetallic compound-based solid seif-lubricating composite material and preparation method thereof

An intermetallic compound, solid self-lubricating technology is applied in the field of TiAl intermetallic compound-based solid self-lubricating composite materials and their preparation, and achieves the effects of reducing synthesis cost, strong feasibility and simple equipment

Inactive Publication Date: 2012-06-13
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of its synthetic products are loose and cracked, with a large number of holes

Method used

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  • TiAl intermetallic compound-based solid seif-lubricating composite material and preparation method thereof
  • TiAl intermetallic compound-based solid seif-lubricating composite material and preparation method thereof
  • TiAl intermetallic compound-based solid seif-lubricating composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 Shown, a kind of preparation method of TiAl intermetallic compound base solid self-lubricating composite material, it comprises the steps:

[0037] 1) Using Ti powder, Al powder, Cr powder, Nb powder and B powder as matrix raw materials, Ti 3 SiC 2 The powder (powder material) is the lubricant reinforcement phase, according to the molar ratio of Ti:Al:Cr:Nb:B=48:47:2:2:1, weigh 11.88 grams of Ti powder, 6.56 grams of Al powder, 0.54 grams of Cr powder, 0.96 gram of Nb powder, 0.06 gram of B powder, a total of 12g, mixed to obtain mixed powder; then add 0.6 gram of high-purity Ti 3 SiC 2 Powder (purity ≥ 99.5%) is added to the above-mentioned mixed powder to obtain ingredients (batch);

[0038] 2) Put the above-mentioned ingredients and steel balls in a stainless steel vacuum ball mill tank, and wet-mill them on a planetary ball mill for 5 hours; the wet-milling medium is alcohol; wherein: the speed of the ball mill is 150 rpm, and the mass ratio of ...

Embodiment 2

[0043] A preparation method of a TiAl intermetallic compound-based solid self-lubricating composite material, comprising the steps of:

[0044] 1) Using Ti powder, Al powder, Cr powder, Nb powder and B powder as matrix raw materials, Ti 3 SiC 2 Powder is the lubricant reinforcement phase, according to the molar ratio of Ti:Al:Cr:Nb:B=48:47:2:2:1, weigh 11.88 grams of Ti powder, 6.56 grams of Al powder, 0.54 grams of Cr powder, 0.96 grams Nb powder, 0.06 gram of B powder, a total of 12g, mixed to obtain mixed powder; then add 1.2 gram of high-purity Ti 3 SiC 2 Powder (purity ≥ 99.5%) is added to the above-mentioned mixed powder to obtain ingredients;

[0045] 2) Put the above-mentioned ingredients and steel balls in a stainless steel vacuum ball mill tank, and wet mill them on a planetary ball mill for 5 hours; the wet milling medium is alcohol; wherein: the speed of the ball mill is 180 rpm, and the mass ratio of balls to materials is 10:1, The vacuum degree in the stainle...

Embodiment 3

[0050] A preparation method of a TiAl intermetallic compound-based solid self-lubricating composite material, comprising the steps of:

[0051] 1) Using Ti powder, Al powder, Cr powder, Nb powder and B powder as matrix raw materials, Ti 3 SiC 2 Powder is the lubricant reinforcement phase, according to the molar ratio of Ti:Al:Cr:Nb:B=48:47:2:2:1, weigh 11.88 grams of Ti powder, 6.56 grams of Al powder, 0.54 grams of Cr powder, 0.96 grams Nb powder, 0.06 gram of B powder, a total of 12g, mixed to obtain mixed powder; then add 1.8 gram of high-purity Ti 3 SiC 2 Powder (purity ≥ 99.5%) is added to the above-mentioned mixed powder to obtain ingredients (batch);

[0052] 2) Put the above-mentioned ingredients and steel balls in a stainless steel vacuum ball mill tank, and wet mill them on a planetary ball mill for 5 hours; the wet milling medium is alcohol; wherein: the speed of the ball mill is 200 rpm, and the mass ratio of balls to materials is 10:1, The vacuum degree in the...

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Abstract

The invention relates to a TiAl intermetallic compound-based solid seif-lubricating composite material which comprises Ti3SiC2, Ti2AlC and C which are used as the ternary composite lubricating phase and TiC which is used as the reinforced phase, and a preparation method thereof. The TiAl intermetallic compound-based solid seif-lubricating composite material is characterized in that the material is prepared from Ti powder, Al powder, Cr powder, Nb powder, B powder and Ti3SiC2 powder, wherein the molar ratio of Ti, Al, Cr, Nb and B is 48:47:2:2:1 and the dosage of the Ti3SiC2 powder is 5-20wt.% of the total weight of the Ti powder, Al powder, Cr powder, Nb powder and B powder. The TiAl / Ti3SiC2-Ti2AlC-C / TiC intermetallic compound-based solid seif-lubricating composite material synthesized by the method is novel in component design (the intermetallic compound matrix, the composite lubricating phase and the reinforced phase), high in density, good in tribological properties, stable in technological parameters, fast and simple in preparation process and easy in operation and the method is suitable to be used to prepare the high performance TiAl intermetallic compound-based solid seif-lubricating composite material.

Description

technical field [0001] The present invention relates to a kind of containing Ti 3 SiC 2 、Ti 2 The invention discloses a TiAl intermetallic compound-based solid self-lubricating composite material of AlC and C ternary composite lubricating phase and reinforcing phase TiC and a preparation method thereof. Background technique [0002] Solid self-lubricating materials with good tribological properties from room temperature to high temperature are urgent problems to be solved in cutting-edge industrial fields. Compared with traditional liquid lubricants, solid lubricants have advantages in the field of high-temperature friction. Rational use of the synergistic lubrication effect of multiple lubricants is one of the effective methods to achieve lubrication in a wide temperature range from room temperature to high temperature. Recently, material scientists are constantly researching new high-performance high-temperature self-lubricating and wear-resistant materials, which not ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/05
Inventor 史晓亮彭美超章桥新徐增师翟文正冯四平张崧王玉伏
Owner WUHAN UNIV OF TECH
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