Analysis of characteristics of high temperature oxidation resistant coatings

The development of industry, the use of high temperature resistant materials, the need to reduce the cost of anti-oxidation and energy saving in high temperature, so that the application of anti-oxidation coatings is widely used. Manager, 010-57182232. Industrial development, use of high temperature resistant materials, materials are reduced at high temperatures Anti-oxidation energy saving and consumption reduction requirements, so that the widespread use of anti-oxidation coatings. Years of research and development, professional technical and scientific strength, located in the anti-oxidation coating design of Zhisheng Weihua Company of Dongtieying, Fengtai District, the coating should use the high temperature solution specially made by Zhisheng Weihua, the temperature resistance should reach 1800 °C, coating Dense adhesion is high. The main influencing factors that should be considered when designing high temperature anti-oxidation coatings for high temperature composite materials, the performance characteristics of which can be summarized as follows;


(1) ZS-1021 high temperature resistant oxidation resistant coating has a low oxygen diffusion coefficient. The coating system must be effective in preventing the intrusion of oxygen, ie having a low oxygen diffusion rate. At the same time, in order to prevent the formation of oxygen diffusion channels, it is necessary to minimize the number of defects in the coating to ensure the uniformity of the coating material;

(2) ZS-1021 high temperature resistant anti-oxidation coating can reduce the outward diffusion of carbon. The coating should also prevent the carbon atoms from diffusing outward, especially for coatings containing oxides, since oxides are easily reduced by carbon;

(3) ZS-1021 high temperature resistant anti-oxidation coating has good impact and corrosion resistance. Considering the actual environment in which the coating is used, the coating should withstand a certain pressure and impact as much as possible, and the coating should have good corrosion resistance, including acid resistance, alkali resistance, salt tolerance, moisture resistance, etc. ;

(4) ZS-1021 high temperature resistant anti-oxidation coating has self-healing ability. When melting at high temperature, the coating should have a certain self-healing healing ability according to different loss;

(5) ZS-1021 high temperature anti-oxidation coating should be well combined with the substrate. There must be a high bonding strength between Fengtai Zhisheng Weihua coatings and coatings and high temperature composites. This requires good wetting properties and the choice of the right process route;

(6) ZS-1021 high temperature anti-oxidation coating coating and material vapor pressure is low. In order to prevent the coating from volatilizing, the coating should have a low vapor pressure;

(7) ZS-1021 high temperature resistant anti-oxidation coating has good physical and chemical compatibility with the substrate. All interfaces must be mechanically and chemically compatible. During the temperature rise and fall process, there is no mutual reaction between the coating and the composite material between the high-temperature anti-oxidation coatings of Zhisheng Weihua to form some undesired phases, or pyrolysis occurs, or a phase change accompanying a large volume change occurs. ;

(8) The thermal expansion coefficient between ZS-1021 high temperature anti-oxidation coating and the layers of the substrate and coating should be as close as possible. The thermal expansion coefficient (CTE) between the coating and the composite material of ZS-1021 high temperature resistant anti-oxidation coating should be as close as possible to avoid large thermal stress and crack or even peel off of the coating;



Http://news.chinawj.com.cn Analysis of characteristics of high temperature oxidation resistant coatings Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn Analysis of characteristics of high temperature oxidation resistant coatings

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