摘要
主要研究了碳纳米管 /羟基磷灰石复合材料的力学性能与微观结构。用XRD研究了其相组成 ,用SEM观察了复合材料的微观结构。研究发现 :碳纳米管的加入能提高复合材料的弯曲强度和断裂韧性 ,但提高幅度不同。在高温烧结时羟基磷灰石往往部分分解生成磷酸三钙和焦磷酸钙 ,而碳纳米管也会发生部分分解或发生晶型转变。碳纳米管的加入将降低烧结温度 ,因此烧结温度应控制在 110 0℃以下 。
The mechanical properties and microstructure of hydroxypapatite/carbon nano-tube composite were investigated. The phase constitution was studied by XRD and the microstructure is observed by SEM. The bending strength and fracture toughness of the composite will be improved when different content of carbon nano-tube is added to hydroxyapatite. When the composite was sintered at a higher temperature, part hydroxyapatite will decompose sometimes which will result in the produce of Ca3(PO4)2 and Ca2P2O7. At the same time, part carbon nano-tube will decompose or change from one crystal to another. Carbon nano-tube can decrease the sintering temperature of hydroxyapatite, thus, the sintering temperature of the composite should be control led below 1100°C and the fine crystal material will be obtained.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2004年第5期98-102,共5页
Acta Materiae Compositae Sinica
基金
国家自然科学基金资助项目 ( 3 0 170 2 69)
国家"863"计划项目资助 ( 2 0 0 3AA3 0 2 2 3 2 )
关键词
CNTs/HAp(碳纳米管/羟基磷灰石)
复合材料
微观结构
Carbon nanotubes
Composite materials
Fracture
Hydroxyapatite
Mechanical properties
Microstructure
Scanning electron microscopy
X ray diffraction
