期刊论文

中文

硬质合金

1003-7292

2013

30

3

129-133

10.3969/j.issn.1003-7292.2013.06.003

国家自然科学基金项目（50971062） 衡阳市科学技术发展计划项目（2012KG51）

本校为第一机构

采用氧-乙炔火焰法在YT14硬质合金表面沉积碳纳米材料,借助扫描电子显微镜和激光拉曼光谱仪对火焰沉积碳产物的形貌和结构进行了表征,并分析研究了火焰结构对沉积产物的影响。结果表明,氧-乙炔火焰的内焰长度、基体在火焰中所处位置和火焰沉积温度不同,火焰中的碳氢基团和活性质点等气相成分种类、浓度及分布梯度相应发生了变化,所获得的火焰沉积产物和分布状况也不一样。当内焰长度调至50 mm、基体-喷嘴距离为30 mm、沉积温度为850℃时,沉积产物主要为"菜花状"的类金刚石碳;当内焰长度调至70 mm、基体-喷嘴距离为40 mm、沉积温度为750℃时,沉积产物主要为"颗粒状"的纳米针状碳聚集体。

Oxygen-acetylene （02-C2H2） flame was used to synthesize carbon nanomaterials on the surface of YT14 hardmetals. The morphology and structure of the deposited products together with the effects of the flame structure on the deposited products were investigated by scanning electron microscope and Raman spectroscope, respectively. The results show that the deposited products vary with factors such as the inner flame length, the substrate position in the flame and the flame-deposited temperature, which affect the species and concentration distrib...