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What are the applications of alumina ceramic materials in automobiles?

What are the applications of alumina ceramic materials in automobiles?

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  • Time of issue:2021-06-25
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(Summary description)Alumina ceramics have excellent properties, a wide range of applications, and huge market potential.

What are the applications of alumina ceramic materials in automobiles?

(Summary description)Alumina ceramics have excellent properties, a wide range of applications, and huge market potential.

  • Categories:Company News
  • Author:
  • Origin:
  • Time of issue:2021-06-25
  • Views:0
Information

We know that alumina ceramics have excellent comprehensive properties, such as high mechanical strength, high resistivity, good electrical insulation properties, high hardness, high melting point, corrosion resistance, excellent chemical stability, optical properties, and other good properties; Al2O3 ceramics The use of the product is also very wide, due to the different content of Al2O3, its performance is different, and the use is also different.

 

According to the excellent comprehensive performance of alumina ceramic material, various excellent and unique properties, when applied to automobiles, it is helpful to reduce the quality of the vehicle itself, improve the thermal efficiency of the engine, reduce fuel consumption, reduce exhaust pollution, increase the life of vulnerable parts, and improve the automobile. Intelligent functions have positive meanings, so alumina ceramic materials play a very important role in the automotive industry, and they are also very important materials, and their applications in automobiles are becoming more and more extensive. Ceramic materials have extremely important value for improving automobile performance, reducing fuel consumption, and reducing exhaust pollution.

 

► Application of alumina ceramic materials in automobile engines

 

The alumina ceramic substrate can withstand high temperatures above 1,000 degrees Celsius, which promotes the development of new applications in automobiles. For example: to reduce the fuel consumption of diesel engines by more than 30%, it can be said that alumina ceramics is an indispensable material. In the current gasoline engine, about 78% of the combustion energy is lost in heat energy and heat transfer. The thermal efficiency of the diesel engine is 33%, which is very superior compared to the gasoline engine, but more than 60% of the heat energy is still lost. Therefore, in order to reduce this part of the loss, the combustion chamber is insulated with ceramic materials with good thermal insulation properties, and then exhaust gas turbochargers and power turbines are used to recover exhaust energy. Tests have shown that this can increase the thermal efficiency to 48%. At the same time, due to the use of alumina ceramic substrates, it will become possible to start diesel engines in an instant.

 

► Application of alumina ceramic materials in automotive sensors

 

The requirement for automotive sensors is that they can be used in the harsh environment (high temperature, low temperature, vibration, acceleration, humidity, noise, exhaust gas) unique to the car for a long time, and should be small and lightweight, reusable, and have a wide output range. The heat resistance, corrosion resistance, wear resistance and potential excellent electromagnetic and optical functions of alumina ceramic materials have been fully utilized with the advancement of manufacturing technology in recent years. Sensors made of alumina ceramic materials can fully meet the above requirements.

 

► Application of alumina ceramic materials in automobile shock absorbers

 

The damping device of high-end cars is an intelligent shock absorber that is successfully developed by comprehensively using the positive piezoelectric effect, inverse piezoelectric effect and electrostrictive effect of alumina ceramics. Due to the use of high-sensitivity alumina ceramic components, this type of shock absorber has the function of identifying the road surface and self-adjusting, which can minimize the vibration caused by the rough road surface of the car.

 

► Application of alumina ceramic materials in automotive catalysts

 

The automobile exhaust catalyst carrier is honeycomb cordierite ceramic, and the surface is coated with alumina and alumina coating doped with rare earth elements. Since automobile exhaust contains toxic carbon monoxide, nitrogen oxides, and hydrocarbons, generally gasoline-powered cars are equipped with automobile exhaust gas treatment devices. Alumina ceramics are widely used in the field of catalyst carriers due to their excellent physical and chemical properties. Assuming that about one-fifth of the in-use vehicles need to replace the catalyst each year, the market space is huge. With the explosion of the new energy industry, especially new energy vehicles, alumina ceramic materials will surely show their fists in the field of new energy by virtue of their excellent physical and chemical properties.

 

Alumina ceramics have excellent properties, a wide range of applications, and huge market potential.

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