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Aluminium-based titanium carbide ceramic self-lubricating wear-resistant material

An aluminum-based titanium carbide and wear-resistant material technology is applied in the field of aluminum-based titanium carbide cermet self-lubricating wear-resistant materials, which can solve the problem of reducing the strength, toughness and wear resistance of composite materials, unsuitable for high-load working conditions, and bearing material strength. Low problems, to achieve the effect of prolonging high temperature service performance, good toughness, and reducing friction coefficient

Inactive Publication Date: 2012-04-25
无锡爱斯特陶瓷复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are few solid lubricants that can withstand high sintering temperatures without losing lubricating properties, and their uneven distribution and damage to the continuity of the matrix will significantly reduce the strength, toughness and wear resistance of composite materials
In addition, due to the addition of solid lubricants (usually solid lubricant materials have non-wetting properties), the strength of the sintered bearing material is very low, the wear resistance is not good, and it is not suitable for high-load working conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Take by weight 35 parts of aluminum powder, 60 parts of titanium powder and carbon powder (the mol ratio of titanium powder and carbon powder should be 1: 1), 5 parts of boron nitride (BN); Dry and degas under high temperature and vacuum conditions, then ball mill and mix evenly; then use molding (pressure between 10-200Mpa) to press into a φ12 cm blank; put the pressed blank into the mold, vacuumize and ignite the blank ; After the blank is completely burned and still in a semi-molten state, the press is used to apply pressure to the blank through the mold. Since there is no air, a high-density cermet self-lubricating wear-resistant material can be obtained. Of course, if necessary, other substances such as some graphite can also be added.

[0015] The obtained wear-resistant material is detected, the three-point bending strength of the wear-resistant material reaches 800MPa, the crush strength is 1100MPa, and the friction coefficient is 0.24. The comparative friction ...

Embodiment 2

[0017] Take by weight 15 parts of aluminum powder, 70 parts of titanium powder and carbon powder (the mol ratio of titanium powder and carbon powder should be 1: 1), 15 parts of boron nitride (BN); Dry and degas under high temperature and vacuum conditions, then ball mill and mix evenly; then use molding (pressure between 10-200Mpa) to press into a φ12 cm blank; put the pressed blank into the mold, vacuumize and ignite the blank ; After the blank is completely burned and still in a semi-molten state, the press is used to apply pressure to the blank through the mold. Since there is no air, a high-density cermet self-lubricating wear-resistant material can be obtained.

[0018] The obtained wear-resistant material is tested, and the three-point bending strength of the wear-resistant material reaches 700MPa, the crush strength is 950MPa, and the friction coefficient is 0.21. The comparative friction test (the pressure is 15N, and the relative friction speed is 200m / s) shows that ...

Embodiment 3

[0020] Take by weight 42 parts of aluminum powder, totally 55 parts of titanium powder and carbon powder (the mol ratio of titanium powder and carbon powder should be 1: 1), 3 parts of boron nitride (BN); Dry and degas under high temperature and vacuum conditions, then ball mill and mix evenly; then use molding (pressure between 10-200Mpa) to press into a φ12 cm blank; put the pressed blank into the mold, vacuumize and ignite the blank ; After the blank is completely burned and still in a semi-molten state, the press is used to apply pressure to the blank through the mold. Since there is no air, a high-density cermet self-lubricating wear-resistant material can be obtained.

[0021] The obtained wear-resistant material is detected, the three-point bending strength of the wear-resistant material reaches 900MPa, the crush strength is 1200MPa, and the friction coefficient is 0.28. The comparative friction test (pressure is 15N, relative friction speed is 200m / s) shows that , the ...

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Abstract

The invention relates to an aluminium-based titanium carbide ceramic self-lubricating wear-resistant material used in the bearing preparation. According to the technical scheme provided by the invention, the aluminium-based titanium carbide ceramic self-lubricating wear-resistant material comprises the following components in parts by weight: 10-50 parts of At least, 40-80 parts of TiC and 0.1-15parts of BN. The wear-resistant material of the invention is characterized by high temperature resistance, high bearing capacity, self-lubricating property, good wear resistance and the like and can satisfy the requirement of the high-temperature high-speed bearing.

Description

technical field [0001] The invention belongs to the technical field of material synthesis, and relates to a wear-resistant material that can be used in the manufacture of high-temperature and high-speed bearings, in particular to an aluminum-based titanium carbide cermet self-lubricating wear-resistant material. Background technique [0002] Bearings used in aviation jet engines, metallurgical high-speed rolling mills, and machine tools are required to have good rigidity, low temperature rise, and be able to withstand large centrifugal forces because they work under high-speed and high-temperature conditions. Generally speaking, the dn value of high peripheral speed bearings used in jet engine main shafts can reach 2.2 million, while the dn value of high angular speed bearings used in dental drills can reach 630,000. The biggest problem with this kind of bearing working at high speed is centrifugal force and temperature rise. [0003] Ordinary alloy bearings mainly obtain h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C29/10C22C1/05
Inventor 王华彬
Owner 无锡爱斯特陶瓷复合材料有限公司