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Preparation method for titanium alloy coating, titanium alloy coating and application

A technology of titanium alloy and composite coating, which is applied in the field of preparation of titanium alloy coating, can solve the problem that titanium alloy coating does not have the function of preventing titanium fire, and achieves the effect of excellent thermal shock resistance and excellent heat insulation performance

Inactive Publication Date: 2017-09-29
CHINESE ACAD OF AGRI MECHANIZATION SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to propose a preparation method of titanium alloy, titanium alloy coating and its application, so as to solve the technical defect that the prior art titanium alloy coating does not have the function of preventing titanium fire

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  • Preparation method for titanium alloy coating, titanium alloy coating and application
  • Preparation method for titanium alloy coating, titanium alloy coating and application
  • Preparation method for titanium alloy coating, titanium alloy coating and application

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preparation example Construction

[0027] The preparation method of the titanium alloy composite coating proposed by the present invention includes: step 1: depositing the amorphous material TiZrNiCuBe on the titanium alloy by electric spark deposition technology to form an anti-titanium flame-retardant coating; The thermal insulation coating was prepared by plasma spraying on the flame retardant coating. That is, the preparation method of the composite coating of the present invention adopts electric spark deposition equipment to deposit TiZrNiCuBe amorphous alloy on the surface of titanium alloy, and then sprays ZrO2 with supersonic plasma spraying equipment. 2 .7-8%Y 2 o 3 Coating, forming a composite functional coating with anti-titanium fire, flame retardant and heat insulation properties. Among them, in step 1, the amorphous material TiZrNiCuBe is better optimized through a comparison test of flame retardancy before deposition.

[0028] The method is as follows: first, clean the surface of the titanium...

Embodiment

[0030] This embodiment is a method for preparing a heat-insulating and anti-titanium fire composite functional coating by combining electric spark deposition technology and supersonic plasma spraying technology. The specific implementation steps are as follows:

[0031] 1. Clean the titanium alloy surface in an ultrasonic cleaning tank with alcohol for 5-10 minutes, and then blow dry after cleaning.

[0032] 2. Deposit the TiZrNiCuBe amorphous alloy on the surface of the titanium alloy with an electric spark deposition equipment to obtain an anti-titanium flame-retardant coating. The EDM deposition process is: voltage 60-110V, frequency 2kHz; discharge capacitance gradually increases from 40μF to 120μF, and then gradually decreases from 120μF to 40μF, in order to achieve the purpose of first thickening and then polishing; specific deposition time 5min / cm 2 , The thickness is 0.1-0.15mm, and the deposition process is protected by argon gas, and the flow rate of argon gas is 20L...

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Abstract

The invention discloses a preparation method for a titanium alloy composite coating. The preparation method comprises the following steps: step 1, depositing a non-crystalline material TiZrNiCuBe on a titanium alloy through electric spark to form a titanium-fire-free flame-retardant coating; and step 2, preparing a heat-isolation coating on the titanium-fire-free flame-retardant coating through plasma spraying. The TiZrNiCuBe non-crystalline alloy coating is deposited on the surface of the titanium alloy through the electric spark deposition process, so that the titanium alloy composite coating has a titanium-fire-free function, and further forms micrometallurgic bonding with a matrix and can replace a bonding layer of a traditional thermal barrier coating; and the ZrO2.7-8%Y2O3 heat-isolation coating is prepared on the TiZrNiCuBe non-crystalline alloy coating by virtue of a supersonic plasma technology, so that the composite function coating with a heat-isolation function, the titanium-fire-free function and high bonding strength can be prepared on the surface of the titanium alloy.

Description

technical field [0001] The invention relates to the field of surface modification of metal materials, in particular to a preparation method of a titanium alloy coating. Background technique [0002] Due to its high specific strength and specific modulus, low density, and strong damage resistance, titanium alloys have great application prospects in aerospace components such as compressor casings and blades of advanced aero-engines. However, due to the high temperature environment, titanium alloys will catch fire and burn when subjected to severe friction, and will spread rapidly, resulting in titanium fire accidents, which seriously restricts the application of titanium alloys in advanced aero-engines. Preparation of anti-titanium fire and flame-retardant coating on the surface of titanium alloy parts is one of the measures to prevent titanium fire from burning. In addition, the titanium alloy parts of advanced aero-engines are subject to higher and higher operating temperat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C28/00C23C26/02C23C4/11C23C4/134
CPCC23C4/11C23C4/134C23C26/02C23C28/323C23C28/3455
Inventor 汪瑞军马小斌詹华袁涛
Owner CHINESE ACAD OF AGRI MECHANIZATION SCI
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