【摘 要】
：
Millimeter-sized boron carbide ceramic hollow microspheres have promising practical application in the encapsulation of nuclear fusion materials in the fiel
【机 构】
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Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, National University of
【出 处】
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2016’中国溶胶-凝胶学术研讨会暨国际论坛
论文部分内容阅读
Millimeter-sized boron carbide ceramic hollow microspheres have promising practical application in the encapsulation of nuclear fusion materials in the field of inertial confinement fusion.Polycarborane, as a kind of boron carbide polymeric precursor, was synthesized by Ruthenium-Catalyzed Ring-Opening Polymerization (ROMP) of 6-(5-norbornenyl)-B10H13 in this work.The polymer precursor which had good solubility and film-forming ability was soluble in most organic solvents and had a high ceramic yield of 76% at 800 ℃.Furthermore, ceramic microspheres with diameters ranging from 1 to 1.5 mm and shell thicknesses from 15 to 30 μm were easily prepared by changing emulsion composition and curing conditions.Micrographs of SEM showed that the hollow microspheres had good sphericity.XPS results of the microspheres showed that the products were composed of boron oxide, boron carbide and graphite.
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