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Ni3Al intermetallic-based solid self-lubricating composite material and preparation method thereof

An intermetallic compound, solid self-lubricating technology, applied in the field of Ni3Al intermetallic compound-based solid self-lubricating composite material and its preparation, can solve the problem of the wettability of lubricant and matrix, the difficulty in controlling interface reaction and interface structure, and the improvement of lubricating performance. The effect is not obvious, the stability of the lubricant is difficult to guarantee, etc., to achieve the effect of excellent tribological properties, shortened sintering time, and excellent comprehensive performance.

Inactive Publication Date: 2013-11-20
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A small amount of lubricant added to the composite material has no obvious effect on improving the lubricating performance, while an excessive amount of lubricant added will lead to a significant decline in mechanical properties. At the same time, it is difficult to control the wettability between the lubricant and the matrix, the interface reaction and the interface structure. , the stability of the lubricant in the process of preparing the matrix is ​​also difficult to guarantee; while the life of the lubricating coating is limited, once it fails, it will cause catastrophic consequences
Simple enhancement relative to Ni 3 The improvement of the tribological properties of Al is also very limited

Method used

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  • Ni3Al intermetallic-based solid self-lubricating composite material and preparation method thereof
  • Ni3Al intermetallic-based solid self-lubricating composite material and preparation method thereof
  • Ni3Al intermetallic-based solid self-lubricating composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Ni 3 Al intermetallic compound-based solid self-lubricating composite material is characterized in that it consists of Ni powder, Al powder, Cr powder, Mo powder, Zr powder, B powder and Ti 3 SiC 2 Powder prepared, where the molar ratio of Ni:Al:Cr:Mo:Zr:B=4.5:1:0.333:0.243:0.0047:0.0015, Ti 3 SiC 2 The amount of powder added is 5% of the total mass of Ni powder, Al powder, Cr powder, Mo powder, Zr powder and B powder.

[0051] The above Ni 3 The preparation method of Al intermetallic compound base solid self-lubricating composite material, it comprises the steps:

[0052] 1) Using Ni powder, Al powder, Cr powder, Mo powder, Zr powder and B powder as the base material, Ti 3 SiC 2 The powder (powder material) is the lubricant reinforcement phase. According to the molar ratio of Ni:Al:Cr:Mo:Zr:B=4.5:1:0.333:0.243:0.0047:0.0015, weigh 7.952 grams of Ni powder and 0.81 grams of Al powder , 0.523 grams of Cr powder, 0.702 grams of Mo powder, 0.013 grams of Zr powder a...

Embodiment 2

[0058] Ni 3 Al intermetallic compound-based solid self-lubricating composite material is characterized in that it consists of Ni powder, Al powder, Cr powder, Mo powder, Zr powder, B powder and Ti 3 SiC 2 Powder prepared, where the molar ratio of Ni:Al:Cr:Mo:Zr:B=4.5:1:0.333:0.243:0.0047:0.0015, Ti 3 SiC 2 The amount of powder added is 10% of the total mass of Ni powder, Al powder, Cr powder, Mo powder, Zr powder and B powder.

[0059] The above Ni 3 The preparation method of Al intermetallic compound base solid self-lubricating composite material, it comprises the steps:

[0060] 1) Using Ni powder, Al powder, Cr powder, Mo powder, Zr powder and B powder as the matrix raw materials, Ti 3 SiC 2 The powder is the lubricant reinforcement phase, according to the molar ratio of Ni:Al:Cr:Mo:Zr:B=4.5:1:0.333:0.243:0.0047:0.0015, weigh 7.952 grams of Ni powder, 0.81 grams of Al powder, 0.523 grams of Cr powder, 0.702 grams of Mo powder, 0.013 grams of Zr powder and 0.0005 gram...

Embodiment 3

[0066] Ni 3 Al intermetallic compound-based solid self-lubricating composite material is characterized in that it consists of Ni powder, Al powder, Cr powder, Mo powder, Zr powder, B powder and Ti 3 SiC 2 Powder prepared, where the molar ratio of Ni:Al:Cr:Mo:Zr:B=4.5:1:0.333:0.243:0.0047:0.0015, Ti 3 SiC 2 The amount of powder added is 15% of the total mass of Ni powder, Al powder, Cr powder, Mo powder, Zr powder and B powder.

[0067] The above Ni 3 The preparation method of Al intermetallic compound base solid self-lubricating composite material, it comprises the steps:

[0068] 1) Using Ni powder, Al powder, Cr powder, Mo powder, Zr powder and B powder as the matrix raw materials, Ti 3 SiC 2 The powder is the lubricant reinforcement phase, according to the molar ratio of Ni:Al:Cr:Mo:Zr:B=4.5:1:0.333:0.243:0.0047:0.0015, weigh 7.952 grams of Ni powder, 0.81 grams of Al powder, 0.523 grams of Cr powder, 0.702 gram of Mo powder, 0.013 gram of Zr powder and 0.0005 gram o...

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Abstract

The invention provides an Ni3Al intermetallic-based solid self-lubricating composite material containing a Ti3SiC2-C binary composite lubricating phase and a reinforcing phase TiC and a preparation method thereof. The Ni3Al intermetallic-based solid self-lubricating composite material is prepared from Ni powder, Al powder, Cr powder, Mo powder, Zr powder, B powder and Ti3SiC2 powder, where in the Ni:Al:Cr:Mo:Zr:B mol ratio is 4.5:1:0.333:0.243:0.0047:0.0015; and the addition amount of the Ti3SiC2 powder accounts for 5-20% of the total weight of the Ni powder, Al powder, Cr powder, Mo powder, Zr powder and B powder. The Ni3Al intermetallic-based solid self-lubricating composite material provided by the invention has the advantages of novel component design, high density and favorable tribological properties. The preparation method has the advantages of quick and simple process and stable technological parameters, is easy to operate, and is suitable for preparing the high-performance Ni3Al intermetallic-based solid self-lubricating composite material.

Description

technical field [0001] The present invention relates to a kind of containing Ti 3 SiC 2 Ni and C binary composite lubricating phase and reinforcing phase TiC 3 Al intermetallic compound-based solid self-lubricating composite material and its preparation method. Background technique [0002] With the development of modern aviation, aerospace and military industry technology, the friction, wear and lubrication of materials under high temperature conditions have been paid more and more attention. General lubricating grease is easy to evaporate in high temperature environment, and cannot meet the work requirements. Solid lubricating materials have broken through the effective limit of traditional grease lubrication, and can effectively achieve lubrication in some extreme working conditions such as high temperature, ultra-low temperature, ultra-high vacuum, strong radiation and other environments. In order to more effectively solve the problems of lubrication and wear failure...

Claims

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Application Information

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IPC IPC(8): C22C32/00C22C19/03C22C1/05
Inventor 史晓亮翟文正王莽章桥新祝志伟徐增师冯四平张崧王玉伏
Owner WUHAN UNIV OF TECH
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