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Xiuqing Hao
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Journal Articles
Article Type: Errata
J. Micro Nano-Manuf. September 2018, 6(3): 037001.
Paper No: JMNM-18-1004
Published Online: May 3, 2018
Journal Articles
Article Type: Research-Article
J. Micro Nano-Manuf. June 2018, 6(2): 021001.
Paper No: JMNM-17-1053
Published Online: December 26, 2017
Abstract
The micro/nanotextured cemented carbide surface of different wettability was produced by laser scanning and fluorinated treatment. The tribological properties of the untextured, oleophobic and oleophilic micro/nanotextured surface were investigated experimentally including the effects of crank speed and contact pressure by a reciprocating friction and a wear tester. For all tested surfaces, the friction coefficient of the surface decreased as both the increasing crank speed and contact pressure increased. Compared to the untextured surface, the friction coefficient of the micro/nanotextured surface was significantly decreased, being sensitive to the wettability of the surface. Besides, the tribological properties of the oleophobic micro/nanotextured surface were superior to the oleophilic micro/nanotextured surface under the same experimental conditions. The improvement in tribological properties of the oleophobic micro/nanotextured surface could be attributed to the low wettability, which was beneficial to rapid accumulation of the lubricating oil on the surface.
Proceedings Papers
Proc. ASME. MSEC2017, Volume 1: Processes, V001T02A051, June 4–8, 2017
Paper No: MSEC2017-3072
Abstract
The micro/nano textured cemented carbide surface of different wettability was produced by laser scanning and fluorinated treatment. The tribological properties of the un-textured, oleophobic and oleophilic micro/nano textured surface were investigated experimentally including the effects of crank speed and contact pressure by a reciprocating friction and a wear tester. For all tested surfaces, the friction coefficient of the surface decreased as both the increasing crank speed and contact pressure increased. Compared to the un-textured surface, the friction coefficient of the micro/nano textured surface was significantly decreased, being sensitive to the wettability of the surface. Besides, the tribological properties of the oleophobic micro/nano textured surface were superior to the oleophilic micro/nano textured surface under the same experimental conditions. The improvement in tribological properties of the oleophobic micro/nano textured surface could be attributed to the low wettability, which was beneficial to rapid accumulation of the lubricating oil on the surface.
Journal Articles
Journal:
Journal of Mechanical Design
Article Type: Research-Article
J. Mech. Des. May 2014, 136(5): 051006.
Paper No: MD-13-1279
Published Online: March 21, 2014
Abstract
The wear of star-wheel teeth is an important problem in single screw compressors. In order to prolong the service life of star wheels, a new curved flank of the tooth is proposed. Section profile of the tooth flank is a curve, which could be elliptical, hyperbolic, involute, or new defined. The screw groove flank is the envelope surface corresponding to the surface of the tooth flank. During the tooth meshing with the groove, the contact line moves in the tooth flank area.
eBook Chapter
Series: ASME Press Select Proceedings
Publisher: ASME Press
Published: 2011
ISBN: 9780791859810
Abstract
The electrochemical micromachining (EMM) technique is proposed to the fabrication of cylindrical surface texture. A rod covered with photoresist is subarea-exposed with a collimated UV source through a mask by rotation of a definite angle each time. The patterned rod is etched with a concentric cylindrical counter electrode and then microstructures on rod surface are obtained. With the combination of experiments and numerical simulation, the anodic dissolution process is predicted and the ordered microstructures with a feature size down to 40μm in large-scale on cylindrical surface are obtained. Furthermore, the reasons of etched quality and nonuniformity are discussed from three aspects, in which, the etched nonuniformity is mostly ascribed to the current aggregate effect due to the variety of surface patterning on the cylinder.
Topics:
Micromachining
