What are the applications of alumina ceramic materials in automobiles?

We all know that alumina ceramics have excellent comprehensive properties, 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 is also very extensive. Due to the different Al2O3 content, its performance is different and its use is also different.

According to the excellent comprehensive properties of alumina ceramic materials, various excellent and unique properties are applied to automobiles, which can reduce the quality of the vehicle itself, improve the thermal efficiency of the engine, reduce fuel consumption, reduce exhaust pollution, improve the life of wearing parts, and improve the life of wearing parts. The intelligent functions of automobiles are of positive significance, so alumina ceramic materials play a very important role in the field of automobile industry, and they are also very important materials, and their applications in automobiles are becoming more and more extensive. For improving the performance of automobiles, reducing fuel consumption, and reducing exhaust pollution, ceramic materials have extremely important value.

► Application of alumina ceramic materials in automobile engines

Alumina ceramic substrates can withstand high temperatures above 1000 degrees Celsius, which promotes the development of new uses in automobiles. For example, to reduce the fuel consumption of diesel engines by more than 30%, it can be said that alumina ceramics are indispensable materials. In gasoline engines now, about 78% of the combustion energy is lost in heat energy and heat transfer. The thermal efficiency of diesel engines is 33%, which is very superior compared with gasoline engines. However, more than 60% of the thermal 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 performance, and then the exhaust gas turbocharger and power turbine are used to recover the exhaust gas energy. Experiments have shown that the thermal efficiency can be increased to 48%. At the same time, due to the use of alumina ceramic substrates, it will be possible to start the diesel engine quickly in an instant.

► Application of alumina ceramic materials in automotive sensors

The requirement for automotive sensors is to be suitable for the harsh environment unique to automobiles (high temperature, low temperature, vibration, acceleration, humidity, noise, exhaust gas) for a long time, and should have the characteristics of small and light weight, good reusability, and wide output range. Alumina ceramic materials are heat-resistant, corrosion-resistant, wear-resistant and their potentially excellent electromagnetic and optical functions. In recent years, with the advancement of manufacturing technology, they have been fully utilized. Sensors made of alumina ceramic materials can fully meet the above requirements. ►

Application of Alumina Ceramic Materials in Automobile Shock Absorbers

The shock absorber of the high-end car is an intelligent shock absorber successfully developed by comprehensively utilizing the positive piezoelectric effect and inverse piezoelectric effect of alumina ceramics. Due to the use of high-sensitivity alumina ceramic components, this shock absorber has the function of recognizing 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 catalyst carrier for automobile exhaust is honeycomb cordierite ceramics, and the surface is coated with alumina and alumina coating doped with rare earth elements. Due to the toxic carbon monoxide, nitrogen oxides and hydrocarbons contained in automobile exhaust, general gasoline-powered cars are equipped with automobile exhaust treatment devices. Alumina ceramics are widely used in the field of catalyst carriers because of their excellent physical and chemical properties. Assuming that about one-fifth of the vehicles in use need to replace the catalyst every year, the market space is huge. With the outbreak of the new energy industry, especially new energy vehicles, alumina ceramic materials will surely show their strengths in the new energy field with their excellent physicochemical properties.

Alumina ceramics have excellent performance, a wide range of applications and huge market potential. My country's high-tech industry is booming, and the demand for alumina ceramics in high-end electronics, medical apparatus, aerospace and other fields is also rising. On the whole, my country's alumina ceramics industry has broad prospects. Under the background of the "Made in China 2025" strategy, the application of alumina ceramics in many industries will continue to deepen, and the future of the industry will be bright.