Device for medium-temperature organometallic chemical vapor deposition of TiO2-Al2O3 composite coating and coating method

A composite coating, chemical vapor phase technology, applied in metal material coating process, gaseous chemical plating, coating and other directions, can solve the problems of large internal stress and coating cracking in a single coating, to eliminate the cracking phenomenon, inhibit the The effect of surface coking and carbon deposition

Active Publication Date: 2017-02-01
SICHUAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, considering the complexity of the real cooling channel structure, among the above methods, only the chemical vapor deposition method is not limited by the complex structure of the sample.
However, the traditional high-temperature chemical vapor deposition will cause changes in the structure and properties of the substrate material itself du

Method used

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  • Device for medium-temperature organometallic chemical vapor deposition of TiO2-Al2O3 composite coating and coating method
  • Device for medium-temperature organometallic chemical vapor deposition of TiO2-Al2O3 composite coating and coating method
  • Device for medium-temperature organometallic chemical vapor deposition of TiO2-Al2O3 composite coating and coating method

Examples

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Embodiment

[0085] Example: slender 310S stainless steel sheet (80mm*10mm*2mm), outer surface TiO 2 -Al 2 o 3 Composite coating deposition process, temperature 350-450 ℃, deposition chamber and connection method as attached diagram 2-1 and 2-2 shown.

[0086] 1) Pretreatment of samples:

[0087] Stain removal cleaning to remove dust and fine impurities during processing; pickling to remove oxide film and rust products on the surface of the sample; ultrasonic cleaning with high-purity deionized water to remove surface residues; ultrasonic cleaning with acetone to remove oil stains and other organic substances, each cleaning time is 15-30min. Finally, put the stainless steel sample in an oven and dry it at 120°C for 1 h for later use.

[0088] 2) Assembly of coating samples:

[0089] Put the processed stainless steel sample in the 2mm wide empty slot on one side of the holder, put the holder and the stainless steel sheet together into the quartz glass tube, ensure that the holder is...

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Abstract

The invention discloses a device for medium-temperature organometallic chemical vapor deposition of a TiO2-Al2O3 composite coating and a coating method. An organometallic chemical vapor deposition method and a horizontal furnace device are adopted, and raw materials are pre-mixed in a small deposition chamber, so that dense codeposition of the TiO2-Al2O3 composite coating on the surface of stainless steel within the temperature range of 250-450 DEG C is achieved, and the purpose of restraining coking and carbon deposition on the surface of the stainless steel is achieved.

Description

technical field [0001] The invention belongs to the technical field of material surface treatment and coating, and relates to a medium-temperature metal-organic chemical vapor deposition TiO2-Al2O3 composite coating device and coating method Background technique [0002] When the future aircraft is flying at high speed, the combustion reaction in the combustion chamber will release a large amount of heat, making the wall temperature of the combustion chamber as high as 3000K, which exceeds the temperature resistance limit of existing materials. Therefore, a reasonable thermal management plan becomes the key to restrict the further development of high-speed aircraft . Active cooling using endothermic hydrocarbon fuels has become a potentially effective solution to thermal management problems. Before the hydrocarbon fuel is injected into the combustion chamber, it first flows on the wall of the engine, and through the physical heating of the fuel itself and the high-temperatu...

Claims

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Application Information

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IPC IPC(8): C23C16/40C23C16/52
CPCC23C16/40C23C16/52
Inventor 朱权李象远王健礼张其翼
Owner SICHUAN UNIV
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