CAJ | 학술논문

本文主要研究了不同烧结工艺对碳纳米管/羟基磷灰石复合材料力学性能与微观结构的影响.力学性能测试结果显示,在真空气氛下烧结的复合材料力学性能在总体上要高于Ar或N2气氛保护下烧结所得复合材料,断裂韧性的提高幅度最大,其最高值达到了2.2 MPa·m1/2,远高于纯羟基磷灰石.XRD及IR研究发现,所制备复合材料纯度高,无其它杂质.SEM观察发现,1100℃,真空下所得复合材料的致密性高,晶粒细,但碳纳米管管径增大;而Ar或N2气氛保护下所得复合材料中碳纳米管容易以原始形态保存,但孔隙率高,晶粒粗.
본문주요연구료불동소결공예대탄납미관/간기린회석복합재료역학성능여미관결구적영향.역학성능측시결과현시,재진공기분하소결적복합재료역학성능재총체상요고우Ar혹N2기분보호하소결소득복합재료,단렬인성적제고폭도최대,기최고치체도료2.2 MPa·m1/2,원고우순간기린회석.XRD급IR연구발현,소제비복합재료순도고,무기타잡질.SEM관찰발현,1100℃,진공하소득복합재료적치밀성고,정립세,단탄납미관관경증대;이Ar혹N2기분보호하소득복합재료중탄납미관용역이원시형태보존,단공극솔고,정립조.
In this paper, the influence of different sintering technique on mechanical properties and microstructure of CNTs/HAp composite was studied. The mechanical properties of CNTs/HAp composite sintered in vacuum is more higher than that in Ar or N2. The increasing range of fracture toughness is the biggest. The maximum is 2.2 MPa·m1/2 which is higher than that of the pure hydroxyapatite. We found that the composite is very pure by XRD and IR. After sintered in vacuum at 1100℃, CNTs/HAp composite has less pore and more thin grain , at the same time, the diameter of CNTs will be enlarged. After sintered in Ar or N2 at 1100℃,the CNTs in composite can easily be preserved in its primitive shape but the composite is more porous and grains are bigger.