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A Silicon Carbide Lollipop

Silicon Carbide is an inorganic material and non-oxide ceramics. Many of researches have been performed and continue for Silicon Carbide ceramic material due to having a range of properties for the advanced technological applications. Besides of chemical stability, thermal stability and thermal shock resistance of Silicon Carbide, mechanical properties such as hardness and wear resistance are excellent for many engineering purposes like filter and catalyst supports for elevated temperatures, seal pumps for automotive water pumps, heat exchangers, bearing and abrasion resistant components or composite materials in armor protection. Silicon Carbide usage in medicine is also important due to biocompatibility feature of Silicon Carbide. Therefore, Silicon Carbide has already been used in myocardial heart probes, bone prosthetics and coronary heart stents. Most of these applications, light weight, stiff and strong porous structure of Silicon Carbide are needed. One way to obtain light weight material is producing porous regions in the lattice which may lead to decrease in mechanical properties of products. A group of researchers in the Center for Advanced Structural Ceramics of United Kingdom studied two different processes based on water suspension and sintering techniques to obtain ultra-light SiC. They built strong, light weight SiC porous structure like as lollipop seen in SEM image. They said that Silicon Carbide with highly porous scaffolds can be used in thermal management, filter and catalyst supports designed to work at elevated temperatures or as ceramic reinforcement in the production of composites.
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