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"White graphene" can greatly improve the properties of ceramic materials
time2018/01/19
American scientists have suggested that the incorporation of nanomaterial "white graphene" in ceramic materials can greatly enhance the strength, toughness, heat resistance and radiation resistance of ceramic materials, and has potential in nuclear industry, aerospace and other areas requiring high-performance composite materials.
White graphene is the nickname of six boron nitride. It is a member of two dimensional material family. The structure is similar to graphene. It is a super thin plane composed of hexagonal grids. But unlike graphene, the atoms are not carbon atoms, but nitrogen and boron atoms.
Scientists at the University of Rice in the United States said they analyzed the combination of white graphene and the combination of silicalalice in detail. Asilosilasic stone is a kind of hydrated calcium silicate crystal with layered structure and can be used to produce ceramics and cement. Only one atom thick white graphene layer can be horizontally inserted between the layered structure of the snow silicalus, forming a solid sandwich structure.
The simulation shows that the white graphene layer can release the composite force, its strength is 3 times higher than rankinite, stiffness, elastic deformation resistance is about 25% higher than ordinary ceramic materials as easily broken. In addition, the heat resistance and radiation resistance of the material have also been significantly improved.
Published in the American Chemical Society "applied materials and interfaces" Journal Papers on before. The researchers say the idea can be used to design a new multi-functional composite material, and other two dimensional materials may have similar effects.