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Surface treatment method for improvement of wear-resistance of titanium or titanium alloy

A surface treatment and titanium alloy technology, applied in the direction of cleaning methods using liquids, cleaning methods and utensils, chemical instruments and methods, etc., can solve the problem that the wear resistance of titanium and titanium alloys cannot meet the requirements, and titanium and titanium alloy substrates Poor mechanical properties, complex manufacturing process and other problems, to achieve the effect of reduced friction coefficient, low cost, and few process parameters

Inactive Publication Date: 2006-07-19
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

[0004] In short, the existing surface treatment methods for improving the wear resistance of titanium and titanium alloys have the following deficiencies: the wear resistance of treated titanium and titanium alloys cannot meet the requirements; the treatment method makes the mechanical properties of titanium and titanium alloy substrates worse; The production process is complicated and the cost is high

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0022] A specific embodiment of the present invention is as follows: take a commercially available titanium material (pure titanium or titanium alloy), wash it with acetone, ethanol and deionized water successively under ultrasonic conditions, dry it at room temperature, place it in a heat treatment furnace, and heat it at 5°C. Raise the temperature at a constant heating rate per second to 500°C, keep the temperature for 20 minutes, and then cool down to room temperature with the furnace. Apparently, the heat treatment furnace in this embodiment communicates with the air, and the titanium material is oxidized on the surface in the air atmosphere.

Embodiment 2

[0024] This embodiment is basically the same as Embodiment 1, except that: the temperature is raised to 600° C. at a constant heating rate of 10° C. / second, and the temperature is kept for 30 minutes.

Embodiment 3

[0026] This embodiment is basically the same as Embodiment 1, except that: the temperature is raised to 800° C. at a constant heating rate of 20° C. / second, and the temperature is kept for 60 minutes.

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Abstract

The surface treatment method comprises: putting the cleaned and dried Ti or Ti alloy into thermal treatment furnace or tube furnace, leading oxygen; or putting itno quartz tube furnace, leading water vapor; heating to 500-800Deg with constant speed as 5-20Deg / s, holding for 20-60min; cooling to room temperature together. This invention changes no the material original mechanical performance, improves its wear-resistance, reduces friction factor with low cost.

Description

Technical field [0001] The invention relates to a surface treatment method for improving the wear resistance of titanium and titanium alloys. Background technique [0002] Titanium and titanium alloys are light in weight, high in specific strength, and good in corrosion resistance. Widely used in aerospace, mechanical instruments, biomedical materials and daily industry and other fields. However, due to its poor wear resistance and high friction coefficient, its application is limited. There are two main ways to improve its tribological properties, one is surface modification, and the other is overall modification. Because friction and wear occur on the surface of the material, surface treatment is usually more effective and economical and has become a common method. However, there are certain problems in the existing processing methods. [0003] Such as: thermal spraying method, the spraying material is alumina (Al 2 o 3 ), zirconia (ZrO 2 ), titanium carbide (TiC), ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/10C23G1/32B08B3/12
Inventor 冯波周仲荣屈树新朱旻昊翁杰
Owner SOUTHWEST JIAOTONG UNIV
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