摘要
为了探讨烧结温度对纤维增强木材陶瓷界面结构的影响,用液化木材和炭粉制备片状基体材料,并通过酚醛树脂与碳纤维复合、在不同的烧结温度条件下制备碳纤维/层状木材陶瓷复合材料。利用扫描电镜(SEM)、场发射透射电镜(FETEM)、显微拉曼光谱(MRS)和X射线光电子能谱(XPS)等方法对其界面结构进行测试与表征。结果表明:在基体材料中,无定形碳与玻璃碳相互融合,界面区过渡自然,无明显界限;而在碳纤维与玻璃碳所形成的界面区中,较高的升温速度易形成为裂纹而呈现弱界面结合。同时,随着烧结温度的升高,界面区中有石墨微晶生成,但呈现出湍层结构。较高的烧结温度有助于脱除N、O、Na等元素,并有利于形成C-C结构。
In order to discuss the effect of sintering temperature on interface structure of fiber-reinforced woodceramics,the flaky matrix was prepared from liquefied wood and carbon powder,and then compounded with carbon fibers through phenolic resin and sintered at different temperatures to obtain carbon fiber / laminated woodceramics. Scanning electron microscopy（ SEM）,Field emission transmission electron microscopy（ FETEM）,Micro-Raman spectrum（ MRS） and X-ray photoelectron spectroscopy（ XPS） were used to detect and describe the interface structure. The result shows that the amorphous carbon and glassy carbon fuse together,the interface region displays natural transition and has no obvious boundaries. But,higher heating rate is easy to form cracks and results in a weak-bonding interface in the interface region which is formed by the carbon fibre and glassy carbon. Meanwhile,with the sintering temperature increasing,there is a graphite crystal structure to form,which presents a turbulent layer structure. Moreover,higher sintering temperature contributes to remove N,O,and Na,and benefits to form a C-C structure.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2016年第11期18-23,共6页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金(31270611
31670572)
关键词
碳纤维/木材陶瓷
烧结温度
界面结构
影响因素
carbon fiber/woodceramics
sintering temperature
interface structure
effect factor
