期刊论文

Structural characterization and performance research of α-Fe/woodceramic nanocomposites

中文

中南林业科技大学学报

1673-923X

2018

38

10

117-122

10.14067/j.cnki.1673-923x.2018.10.018

湖南省重点研发计划项目(2016NK2144) 湖南省教育厅项目(17C1662) 中南林业科技大学青年科学研究基金重点项目(QJ2012012A)。

本校为第一机构

在呋喃树脂中加入不同质量百分数的纳米γ-Fe_2O_3,然后与毛竹竹粉混合、压制成型、高温烧结制备出纳米α-Fe/木陶瓷复合材料.分别采用X射线衍射仪(XRD)与扫描电子显微镜(SEM)对纳米α-Fe/木陶瓷复合材料的物相组成与成分分布与进行了表征,并对其抗弯强度与导电性能进行了研究.结果表明:(1)复合材料中存在的主要晶体相有石墨、α-Fe与Fe3C;(2)纳米α-Fe颗粒多数呈球形分散于木陶瓷基体中,当γ-Fe_2O_3添加量大于15% 时,生成的α-Fe粒子发生了比较明显的团聚;(3)纳米α-Fe/木陶瓷复合材料的抗弯强度随烧结温度的提高而增大,随纳米γ-Fe_2O_3添加量的增大先增加后减小,抗弯强度最大值为13.31MPa;(...

Bamboo powder and furan resin added by γ-Fe_2O_3 nanoparticles with different weight percents were mixed and compressed.As-prepared preforms were then sintered in a vacuum furnace to obtain α-Fe/woodceramic nanocomposite.The phase constitution and ingredient distribution of the composite were performed by X-ray diffraction (XRD) and scanning electron microscopy (SEM).The mechanical properties,volume electrical resistivity of the composite were also investigated.The results are as follows:(1) There mainly exist crystal phases of graphite carbo...