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Modification method for improving high-temperature oxidation resistance of titanium-based alloy

A high-temperature oxidation-resistant, titanium-based alloy technology, applied in the direction of electrolytic coatings, surface reaction electrolytic coatings, coatings, etc., can solve the problems of unsuitability for industrial production, decline in oxidation resistance, and poor effects, and achieve low modification costs , improve utilization, easy to achieve effect

Active Publication Date: 2020-12-25
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] In order to solve the problem that although the existing titanium-based alloys generally have good oxidation resistance, their oxidation resistance drops sharply when the service temperature exceeds 750°C, and the existing technologies either have high costs or poor effects. , or there are problems such as being unsuitable for industrialized production, the present invention provides a modification method for improving the high temperature oxidation resistance of titanium-based alloys

Method used

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  • Modification method for improving high-temperature oxidation resistance of titanium-based alloy
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  • Modification method for improving high-temperature oxidation resistance of titanium-based alloy

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Embodiment 1

[0072] A modification method for improving the high-temperature oxidation resistance of titanium-based alloys, the method comprising:

[0073] The surface of the Ti-Al alloy that has undergone conventional pretreatment such as degreasing is subjected to sandblasting treatment, and then placed in a fluorine-containing system for anodic oxidation.

[0074] The specific operating parameters are shown in Table 1 below.

[0075] Table 1: Example 1 operating parameters

[0076]

[0077]

Embodiment 2

[0079] A modification method for improving the high-temperature oxidation resistance of titanium-based alloys, the method comprising:

[0080] The surface of the Ti-Al alloy that has undergone conventional pretreatment such as degreasing is subjected to sandblasting treatment, and then placed in a fluorine-containing system for anodic oxidation.

[0081] The specific operating parameters are shown in Table 2 below.

[0082] Table 2: Embodiment 2 operating parameters

[0083]

Embodiment 3

[0085] A modification method for improving the high-temperature oxidation resistance of titanium-based alloys, the method comprising:

[0086] The surface of the Ti-Al alloy that has undergone conventional pretreatment such as degreasing is subjected to sandblasting treatment, and then placed in a fluorine-containing system for anodic oxidation. The specific operating parameters are shown in Table 3 below.

[0087] Table 3: Embodiment 3 operating parameters

[0088]

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Abstract

The invention belongs to the field of metal material surface treatment, and particularly relates to a modification method for improving high-temperature oxidation resistance of a titanium-based alloy.The method includes the steps that sand blasting treatment is conducted on the surface of the titanium-based alloy, and then the titanium-based alloy is placed in a fluorine-containing system for anodic oxidation. According to the method, the high-temperature oxidation resistance of the titanium-based alloy can be effectively improved; the whole modification process is simple and efficient, chemical pollution and dust pollution can be effectively avoided, the material utilization rate is high, and the characteristic of green chemical engineering is achieved; the modification cost is low, therequirements for equipment and materials are low, and implementation is easy; the method is suitable for industrial production and popularization; and the thermal shock resistance of the titanium-based alloy can be further improved.

Description

technical field [0001] The invention belongs to the field of surface treatment of metal materials, and in particular relates to a modification method for improving the high-temperature oxidation resistance of titanium-based alloys. Background technique [0002] Titanium is an important structural metal developed in the 1950s. Titanium alloys have high strength, good corrosion resistance, and high heat resistance. In the 1950s and 1960s, it mainly developed high-temperature titanium alloys for aero-engines and structural titanium alloys for airframes. In the 1970s, a batch of corrosion-resistant titanium alloys were developed. Since the 1980s, corrosion-resistant titanium alloys and high-strength titanium alloys have been further developed. develop. The service temperature of heat-resistant titanium alloys has increased from 400°C in the 1950s to 600°C in the 1990s. [0003] 650°C. A 2 (Ti 3 The emergence of Al) and r(TiAl)-based alloys has made titanium advance from the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26B24C1/06
CPCC25D11/26B24C1/06
Inventor 包雅婷伍廉奎唐谊平侯广亚
Owner ZHEJIANG UNIV OF TECH
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