Effect of fiber type on mechanical properties of short carbon fiber reinforced B4C composites
Effect of fiber type on mechanical properties of short carbon fiber reinforced B4C composites
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DOI：
10.1016/j.ceramint.2008.07.023
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发表时间：
2009-05-01
影响因子：
5.2
通讯作者：
Li Min
中科院分区：
文献类型：
--
作者：
Wang Mingchao;Zhang Zuoguang;Li Min
为了在不增加密度的情况下提高B4C的力学性能，采用热压工艺制备了短碳纤维M40、M55J和T700增强B4C陶瓷复合材料。碳纤维的加入加速了B4C的致密化，降低了其密度，提高了其强度和韧性。通过考察复合材料的密度、维氏硬度以及弯曲强度、弯曲模量、断裂韧性等力学性能，研究了三种碳纤维的增强效果。纤维类型对短碳纤维增强B4C复合材料的力学性能和增强影响很大。 T700等高强低模柔性碳纤维适合增强B4C基陶瓷复合材料。 (C) 2008 Elsevier Ltd 和 Techna Group S.r.l.版权所有。
In order to enhance the mechanical properties of B4C without density increase, the short carbon fibers M40, M55J and T700 reinforced B4C ceramic composites were fabricated by hot-pressing process. The addition of the carbon fibers accelerates the densification of the B4C, decreases their densities, and improves their strength and toughness. The enhancement effects of the three kinds of carbon fibers were studied by investigating the density, Vickers hardness and the mechanical properties such as flexural strength, flexural modulus and fracture toughness of the composites. The fiber type has a great influence on the mechanical properties and enhancement of the short carbon fiber reinforced B4C composites. The flexible carbon fiber with high strength and low modulus such as T700 is appropriate to reinforce the B4C matrix ceramic composites. (C) 2008 Elsevier Ltd and Techna Group S.r.l. All rights reserved.