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Author Itagaki, Kaito ♦ Nishitani, Yosuke ♦ Kitano, Takeshi ♦ Eguchi, Kenichiro
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword NANOSCIENCE AND NANOTECHNOLOGY ♦ CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ CALCIUM CARBONATES ♦ CARBOXYLIC ACIDS ♦ COLLOIDS ♦ FILMS ♦ NANOCOMPOSITES ♦ NANOPARTICLES ♦ NANOSTRUCTURES ♦ PARTICLE SIZE ♦ PLATES ♦ POLYAMIDES ♦ PRECIPITATION ♦ SCANNING ELECTRON MICROSCOPY ♦ SURFACE TREATMENTS ♦ SURFACES ♦ TRIBOLOGY ♦ WEAR
Abstract For the purpose of developing high performance tribomaterials for mechanical sliding parts such as gears, bearings and so on, nanosized calcium carbonate (nano-CaCO{sub 3}) filled polyamide 66 (PA66) nanocomposites were investigated. The nano-CaCO{sub 3} was a kind of precipitated (colloid typed) CaCO{sub 3}, and its average particle size was 40, 80 and 150 nm. Surface treatment was performed by fatty acid on the nano-CaCO{sub 3} and its volume fraction in the nanocomposite was varied from 1 to 20vol.%. These nanocomposites were melt-mixed by a twin screw extruder and injection-molded. Tribological properties were measured by two types of sliding wear testers such as ring-on-plate type and ball-on-plate type one under dry condition. The counterface, worn surface and wear debris were observed by digital microscope and scanning electron microscope. It was found that the nano-CaCO{sub 3} has a good effect on the tribological properties, although the effect on the frictional coefficient and specific wear rate is differed by the volume fraction and the type of sliding wear modes. This is attributed to the change of wear mechanisms, which is the change of form of the transfer films on the counterface and the size of wear debris. It follows from these results that PA66/nano-CaCO{sub 3} nanocomposites may be possible to be the high performance tribomaterials.
ISSN 0094243X
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-03-09
Publisher Place United States
Volume Number 1713
Issue Number 1


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