摘要
采用化学气相沉积(CVD)法制备了内包金属Fe/洋葱状富勒烯,利用高分辨透射电镜(HETRM)、X-射线衍射(XRD)和傅立叶红外(FT-IR)等对产物的结构和形貌进行了表征;运用硬脂酸对Fe/洋葱状富勒进行化学修饰;着重讨论硬脂酸修饰后Fe/洋葱状富勒烯作为润滑油添加剂的分散性和稳定性。结果表明所制备的Fe/洋葱状富勒烯颗粒均匀,通过酯化反应Fe/洋葱状富勒烯能够被硬脂酸包覆,显著提高了Fe/洋葱状富勒烯在润滑油中的分散性和稳定性。在MRS-10A型四球摩擦试验机上考察了Fe/洋葱状富勒烯作为机油添加剂的润滑性能。
Fe@ Onion-Like Fullerenes(OLFs) were synthesized by CVD.Fe@ OLFs were functionalized by by refluxing with stearic acid(SA).Their morphology and structure were characterized by HRTEM,XRD and IR.The lubricative propertis of Fe@OLFs as lubricant additives were investigated by using a four-ball type tribometer.It mainly results in the formation of numerous carbon onion composed of concentric graphitic layers,with diameter distributing about 50-60nm.The dispersion capability and stability of SA coated OLFs as lubricant additive were effectively improved.The scratches on the worn surfaces became slighter and more uniform with addition of OLFs to the base lubricant.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2009年第S1期206-208,214,共4页
Journal of Materials Engineering
基金
国家自然科学基金(50772069)
山西省自然科学基金(200611054
20063005)资助项目
关键词
Fe/洋葱状富勒烯
化学修饰
润滑性
Metal@Onion-Like Fullerenes
modification
lubricant ability
