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The application of silicon carbide ceramics is indispensable in the 5G era.
Release time:
2020-09-30
In the 5G era, semiconductor chips are at the heart of the transformation. The evolution of mobile communications from 1G to 5G has largely involved upgrades in both software and hardware. As a new third-generation semiconductor material, silicon carbide is playing a key role in advancing 5G mobile communications.
Among the key materials for the 5G era, ceramic materials are also poised to play a significant role. So, when silicon carbide is used as a ceramic material, can it carve out a niche for itself in the 5G era? By examining the characteristics of key materials for the 5G era and the performance properties of silicon carbide ceramics, we’ll briefly explore some potential applications of silicon carbide ceramics in the 5G era.
Applications of Silicon Carbide Ceramics in the 5G Era:
(1) Mobile phone electromagnetic shielding materials: In the 5G era, the size and spacing of internal chips in smartphones are becoming increasingly smaller, resulting in a higher degree of integration and greater signal transmission density. Consequently, electromagnetic interference within smartphones is becoming increasingly severe. Therefore, electromagnetic shielding materials for mobile phones have become an indispensable component of 5G-era smartphones. According to reports, silicon carbide ceramic composites possess wave-absorbing properties, and given their low density and high mechanical strength, they hold promise as compact and lightweight wave-absorbing components inside 5G smartphones.
(2) Thermal Management Materials for Mobile Phones: In the 5G era, smartphones have become increasingly powerful, leading to greater integration and densification of chips and modules inside the phone. As a result, heat generation during semiconductor device operation has risen sharply. Since thermal-induced failure is one of the key reasons for semiconductor device malfunction, it is now extremely urgent to develop well-matched thermal management materials.
As far as thermally conductive and heat-dissipating ceramics are concerned, alumina ceramic is currently the most mature material. However, alumina ceramic still suffers from low thermal conductivity and a significant mismatch in thermal expansion coefficients with semiconductor chips, which easily leads to the accumulation of internal stresses and chip failure. Therefore, it is difficult for alumina ceramic to meet the demands of thermally conductive and heat-dissipating materials in the 5G era.
Silicon carbide ceramics boast a high thermal conductivity, a low coefficient of thermal expansion, and an exceptionally high degree of thermal expansion matching with that of chips. Moreover, in the 5G era, if chip materials were to adopt the latest-generation silicon carbide semiconductors, the thermal expansion matching would become nearly perfect. Therefore, silicon carbide ceramics hold great promise as thermal management materials for mobile phones in the 5G era.
The wide range of excellent properties of silicon carbide ceramics has made their applications increasingly diverse—spanning not only modern industrial fields but also aerospace, aviation, and national defense and security. Therefore, the application of silicon carbide ceramics is indispensable in the 5G era.
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