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Effect of the Addition of Carbon on the Sintering Properties of Boron Carbide Ceramics prepared by Pressureless Sintering

机译:通过无压烧结制备的碳化硼陶瓷烧结性能的碳对碳化碳烧结性能的影响

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Effect of the addition of carbon on the sintering properties of pressureless sintered boron carbide ceramics was investigated by using carbon black and phenolic resins as the main additives. There were three ways for adding Carbon, carbon black adding, phenolic resins adding and adding carbon black and phenolic resins mixtures. The density and microstructure of sintered B_4C ceramics were analyzed by densitometer and optical microscope respectively. The effect on the densification of B_4C ceramics by different content and adding method of carbon were analyzed and summarized. The results showed that the B4C ceramics has the optimum properties, that bulk density, bending strength, hardness and fracture toughness achieve 2.42g/cm~3, 335MPa, 22Gpa and 3.17 Mpa·m~(1/2), respectively under the adding the mixture of 5.5%, carbon black and 1.5%, phenolic resins.
机译:通过使用炭黑和酚醛树脂作为主要添加剂,研究了碳加入碳对无气烧结碳化硼陶瓷烧结性能的影响。添加碳,炭黑加法,酚醛树脂添加和添加炭黑和酚醛树脂混合物有三种方法。烧结B_4C陶瓷的密度和微观结构分别通过密度计和光学显微镜分析。分析并汇总了对不同含量和加法方法对B_4C陶瓷致密化的影响。结果表明,B4C陶瓷具有最佳性能,其堆积密度,弯曲强度,硬度和断裂韧性,分别在添加下实现2.42g / cm〜3,335MPa,22gPa和3.17mPa·m〜(1/2)混合物5.5%,炭黑和1.5%,酚醛树脂。

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