Preparation and tribological properties of Nb1-xTixSe2 micro/nanoparticles
Nb1-xTixSe2 (x=0~1) micro/nano-particles have been successfully prepared via solid-state thermal (750℃) reaction between microsized Nb,Ti with Se powders under seal environment in a seal quartz tube and characterization by X-ray diffractometer and scanning electron microscopy.It was found that the morphologies of the as-prepared products changed from microplates to micro-nanoparticles or aggregations composed of layer structure with the doping of Ti.And the amount of regular hexagonal microplates evidently reduced and nanoscaled particles increased with the increase of the contents of Ti dopant within a certain limit (1-20 atwt.%).The tribological properties of the as-prepared products as additives in paraffin were investigated by UMT-2 multispecimen tribotester.By the addition of Nb1-xTixSe2 micro/nanoparticles in paraffin,the antiwear ability was improved and the friction coefficient was decreased.The paraffin with Nbl-xTixSe2 micro/nanoparticles showed better tribological properties than that with pure NbSe2.A combination of the molecule-bearing mechanism of sliding friction,and fill in-repair work between the rubbing surfaces can explain the good friction and wear properties of Nb1-xTixSe2 micro/nanoparticles.
Micro/nanoparticles Solid-state reaction Nb1-xTixSe2 Tribological properties
Jiaqing Liang Changsheng Li Hua Tang Yi Zhang Wenjing Li Zhili Hu Fen Wang
School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, PR China
国际会议
辽宁葫芦岛
英文
536-540
2012-08-07（万方平台首次上网日期，不代表论文的发表时间）