What are the applications of silicon nitride ceramics
Silicon nitride ceramics have the characteristics of high hardness, high strength, high temperature resistance, and corrosion resistance. Silicon nitride is very hard and is also one of the harder materials, so it is considered to be one of the high-temperature structural ceramic materials that still have application prospects. So let's learn about the applications of silicon nitride ceramics!
Application of Silicon Nitride Ceramics in Electronic Equipment
With the rapid development of information technology, the integration level of integrated circuits is getting higher and higher, and the wiring density is also getting higher and higher. If the electronic package substrate is not dissipated immediately, a large amount of heat can accumulate in the integrated circuit, which can lead to failure and breakage. Therefore, the thermal conductivity of the substrate is extremely important. The theoretical thermal conductivity of single crystal silicon nitride can reach more than 400w m-1. Silicon nitride ceramics are structural ceramic materials with better comprehensive performance and have the potential to become substrates with high thermal conductivity.
Application of Silicon Nitride Ceramics in Machinery Industry
Silicon nitride ceramics can be used as turbine blades, mechanical seals, high-temperature bearings, high-speed cutting tools, permanent molds, etc. in the machinery industry. Silicon nitride ceramic material has excellent wear resistance, corrosion resistance, high temperature thermal shock resistance. It can replace metal materials, which are used in many equipment in the traditional machinery industry. Since metals will corrode, it has a great impact on the reliability and lifespan of these devices. Used in the field of machinery industry.
Application of Silicon Nitride Ceramics in the Field of Metallurgy
Silicon nitride ceramic materials have excellent chemical stability and excellent mechanical properties, and can be used as components of thermal equipment such as crucibles, burners, and aluminum electrolytic cell linings in the metallurgical industry. Stable in a dry oxidizing atmosphere below 1400, the use temperature can reach 1300. In addition, silicon nitride ceramics have good oxidation resistance, and the oxidation resistance temperature can reach 1400. Silicon nitride materials can be used in rapid cooling and rapid heating environments, so they have also been widely used in the metallurgical industry.
Application of Silicon Nitride Ceramics in Aeroengines
The mechanical structure of future aero-engines will be simpler than existing types, with fewer components, and they will operate at higher turbine inlet temperatures and component loads. Using ceramic materials with excellent thermal properties can reduce the amount of cooling air required and greatly increase gas temperature. Reliability and component life will also increase. Turbine materials must meet requirements in terms of tensile strength, creep resistance, high temperature corrosion resistance, and impact damage resistance. Silicon nitride materials have higher strength, creep strength and oxidation resistance than nickel-based heat-resistant alloys at temperatures above 1000 °C, and their specific gravity is also smaller. Traditional large-scale aero-engines mainly use nickel-based heat-resistant materials, and 40% heat-resistant alloys can meet the requirements of future aero-engines for light weight and reduced fuel consumption.
The above is the application of silicon nitride ceramics . If you want to know more, please feel free to contact us!