【摘要】 目的 本文主要对碳纳米管/羟基磷灰石生物复合材料进行了初步研究。力争初步找到一条制备CNT_s/HAp复合材料的工艺路线,并对所得复合材料的微观结构进行初步研究。方法 以球磨和超声分散两种工艺制备了CNT_s/HAp复合粉体,并经等静压成型、真空无压烧结制备出了碳纳米管/羟基磷灰石复合材料。结果 XRD、IR、TEM及SEM研究发现,所制备羟基磷灰石为纳米级,纯度高,所使用的原料碳纳米管纯度高,碳纳米管在复合粉体中分散均匀。碳纳米管有细化晶粒的作用,但随着烧结温度的升高碳纳米管分解加剧,因此烧结温度以低于1100℃为宜。结论 初步找到了一条制备CNT_s/HAp复合材料的工艺路线。随温度的升高,复合材料中CNT_s的存留量逐渐减少。因此真空下该复合材料的烧结温度应低于1100℃。更多还原

【Abstract】 Objective In this paper, the authors mainly studied the preparation, microstructure and properties of carbon nano-tube/hydroxyapatite biologic composite. One technology route to fabricate carbon nanotube/hydroxyapatite composite was found and the microstructure of the composite was studied primary. Method Ball milling and ultrasonic disperse technology are used to prepare the multiplex power of hydroxyapatite and carbon nano-tube. First, the multiplex powder are moulded by pressing and isotropy pressing, then, they are inside in vacuum and the composite are got. Results XRD, IR, TEM and SEM are used to test the composing, microstructure and properties of the composite. The diameter of hydroxyapatite powder is below 100nm and their purity is very high. The carbon nano-tube are dispersed in hydroxyapatite base symmetrical. Carbon nano-tube can fine the crystal of hydroxyapatite. Carbon nano-tube decompose badly with the increase of temperature, thus, the sintering temperature should be controlled bellowed 1100℃.Conclusion One technology route to prepare CNTs/HAp composite was got primary. The content of carbon nano-tube is less and less with the increase of temperature. Thus, the sintering temperature should be controlled bellowed 1100℃ in vacuum atmosphere.更多还原