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  • 2005-2009  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Formation Mechanism of the Frictionally-Formed Protective Coating by Using Self-Repairing Material under Sliding Friction (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 373-374 (Mar. 2008), p. 572-575 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Sliding experiments lubricated with hydroxyl silicate magnesium particles as additivewere performed under ambient condition and different loads by using an AMSLER friction andwear tester. The surface topographies and compositions of worn surface of 45 steel rings wereanalyzed by SEM and EDAX. The experimental results show that the friction load had great effecton generation of the frictionally-formed protective coating. No protective coating formed on theworn steel surface under lower friction load. However, a smooth and continuous protective coatingcan be developed on the worn surface of the steel when the friction load is high enough. Thechemical composition of the protective coating is roughly the same as the additive. The additive canbe fractured, stretched and flowed along the sliding direction under high contacting stress andinstantaneous flash temperature, which result in coating being formed
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.373-374.572.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Cavitation Behavior of Cast Iron under Different Parameter Conditions (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 373-374 (Mar. 2008), p. 501-504 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Cavitaion erosion behavior of cast iron in water and in mixed solution of 50% H2O+50%C2H6O2 with different temperature and distance between two samples have been studied by meansof a ultrasonic vibrator. The mass loss of the samples at different time is recorded.The surfacestructure of the oxidation films on the surface of cast iron was analyzed by X-ray diffractionapparatus. The experimental results show that mass loss of the upper sample is more than that of thelower sample. The maximum of mass loss occurred when the distance between the samples is about1.0mm. Oxidation films form on the surface of the cast iron in pure water and cannot form on thesurface of cast iron in mixed solution. The XRD results show that the oxidation film mainly consistsof Fe2O3 phase at 50°C, Fe3O4 phase at 80°C. The mass loss at 50°C is less than that at 80°C.Oxidation film of Fe2O3 phase has some advantages to decelerate the cavitation erosion. Mass lossof the sample of cast iron in mixed solution is less than that in pure water at 80°C. Thisphenomenon indicates that formation of the oxidation films plays a more important role incavitation erosion to reduce or increase mass loss of the cast iron samples
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.373-374.501.pdf
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  • 3
    Electronic Resource
    Electronic Resource
    The Study on the Deposition Efficiency of Microarc Oxidation on Aluminum Alloy (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 373-374 (Mar. 2008), p. 268-272 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: With excellent wear resistance and corrosion resistance of films, simple procedures, highproduction efficiency and being environmentally friendly, micro-arc oxidation has become a noveltechnique to produce ceramic coatings on the surfaces of light metals such as aluminum and its alloys.In order to decrease the electric power consumption during the process, we put forward a improvedtechnique of micro-arc oxidation, and introduce its technical properties and treatment effects on thesurfaces of aluminum. The experimental results show that the properties, such as phase structure,thickness, roughness and hardness of the ceramic coating prepared by improved micro-arc oxidationare similar to those prepared by traditional micro-arc oxidation. The micro-arc oxidation with higherdeposition efficiency will be an important research direction in the future
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.373-374.268.pdf
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