Modified material on surface of high-temperature component and preparation method of cladding layer of modified material

A technology for surface modification and high-temperature components, which is applied in the field of surface modification materials and cladding layer preparation of high-temperature components. It can solve the problems of complex equipment, large residual stress, and difficulty in controlling component ratios, and achieve molten pool heating and cooling. Fast speed, excellent high temperature oxidation resistance, uniform and stable structure

Inactive Publication Date: 2017-04-26
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantages of physical vapor deposition (PVD) are: it is difficult to control the component ratio due to thermal decomposition when evaporating compounds; it is difficult to form a film with low vapor pressure substances; sputtering targets are required, the target materials need to be refined, and the target utilization rate is low
[0005] The defects of chemical vapor deposition (CVD) are: weak film-base bonding force, non-wear-resistant and directional coating film; difficult to remove impurities; difficult to control the composition; Explosive or toxic, requiring protective measures; difficult to locally coat substrates
[0006] The defects of surfacing welding are: large heat input; large residual stress; large dilution rate of substrate to coating; complicated subsequent processing procedures
[0007] The defects of thermal spraying are: the bonding strength between the sprayed coating and the substrate is low, and it cannot withstand alternating loads and impact loads; the

Method used

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  • Modified material on surface of high-temperature component and preparation method of cladding layer of modified material
  • Modified material on surface of high-temperature component and preparation method of cladding layer of modified material
  • Modified material on surface of high-temperature component and preparation method of cladding layer of modified material

Examples

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Example Embodiment

[0036] Example 1:

[0037] The surface modification material of the high-temperature component of this embodiment is composed of five element powders of Ti, Al, Hf, Ta and W; the components and mole percentages are Ti powder 35%, Al powder 35%, Hf powder 15%, Ta powder 8 %, W powder 7%, the average particle size of Ti powder, Al powder, Hf powder, Ta powder and W powder are all 75μm; and the mass of various element powders is weighed by analytical electronics, and the total mass of mixed powder is 50g.

[0038] The method for preparing the cladding layer of the surface modification material of the high-temperature component in this embodiment includes the following steps:

[0039] (1) Use TC4 (Ti-6Al-4V) as the base material, use mechanical polishing to remove oxides, use acetone to remove oil stains, and use ultrasonic alcohol to clean, dry for use;

[0040] (2) After weighing the components in proportion, conduct vacuum ball milling to make them fully mixed evenly. Ball milling para...

Example Embodiment

[0045] Example 2: The surface modification material of the high-temperature component of this example is composed of five element powders of Ti, Al, Hf, Ta and W; the components and mole percentages are Ti powder 40%, Al powder 35%, and Hf powder 15% , Ta powder 5%, W powder 5%, the average particle size of Ti powder, Al powder, Hf powder, Ta powder and W powder are all 80μm; and use analytical electronic weighing to weigh the mass of various element powders, and the total The mass is 50g.

[0046] The method for preparing the cladding layer of the surface modification material of the high temperature component of this embodiment includes the following steps:

[0047] (1) Use TC4 (Ti-6Al-4V) as the base material, use mechanical polishing to remove oxides, use acetone to remove oil stains, and use ultrasonic alcohol to clean, dry for use;

[0048] (2) After weighing the components in proportion, perform vacuum ball milling to make them fully mixed evenly. Ball milling parameters: bal...

Example Embodiment

[0053] Example 3: The surface modification material of the high temperature component of this example is composed of five element powders of Ti, Al, Hf, Ta and W; the components and mole percentages are Ti powder 40%, Al powder 40%, and Hf powder 8% , Ta powder 6%, W powder 6%, the average particle size of Ti powder, Al powder, Hf powder, Ta powder and W powder are all 85μm; and use analytical electronic weighing to weigh the mass of various element powders, and the total powder The mass is 50g.

[0054] The method for preparing the cladding layer of the surface modification material of the high-temperature component in this embodiment includes the following steps:

[0055] (1) Use TC4 (Ti-6Al-4V) as the base material, use mechanical polishing to remove oxides, use acetone to remove oil stains, and use ultrasonic alcohol to clean, dry for use;

[0056] (2) After weighing the components in proportion, conduct vacuum ball milling to make them fully mixed evenly. Ball milling parameter...

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Abstract

The invention discloses a modified material on the surface of a high-temperature component and a preparation method of a cladding layer of the modified material. The modified material is composed of, by mole percent, 35-40% of Ti powder, 35-40% of Al powder, 6-15% of Hf powder, 4-8% of Ta powder and 3-7% of W powder. After the modified material on the surface of the high-temperature component is subjected to laser cladding, the cladding layer is good in surface macro appearance and has the characteristics of being small in structural grain, free of cracks, and high in bonding strength with a base material. The cladding layer has excellent performance under high-temperature conditions, the operating temperature of the high-temperature component can be greatly increased, working demands under high temperatures are met, and the cladding layer has extremely high academic value and extremely great industrial application potentiality.

Description

technical field [0001] The invention belongs to the field of laser surface modification, and in particular relates to a surface modification material for a high-temperature component and a preparation method for a cladding layer thereof. Background technique [0002] As a new type of light metal material, titanium alloy has the advantages of low density, high specific strength, good biocompatibility, and corrosion resistance. It is widely used in aerospace, marine engineering, petrochemical, medical and health, and machinery manufacturing. However, Its low high temperature oxidation resistance severely limits its wide application. The service temperature of titanium alloy is generally lower than 650°C. As the working temperature increases, especially when the temperature exceeds 650°C, the titanium alloy will undergo faster oxidation reaction in the air environment, which will significantly damage the performance. The high-temperature oxidation resistance of alloys has beco...

Claims

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Application Information

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IPC IPC(8): C23C24/10C22C30/00
CPCC23C24/106C22C30/00
Inventor 刘洪喜董涛穆永坤刘子峰
Owner KUNMING UNIV OF SCI & TECH
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