車軸抗微動損傷涂層的厚度效應及工藝影響研究.pdf

1、北方交通大學碩士學位論文車軸抗微動損傷涂層的厚度效應及工藝影響研究姓名：孫琰申請學位級別：碩士專業(yè)：機車車輛指導教師：何慶復19981201ABSTRACTInthispaper，frettingmechanismsofthermallysprayedcoatingandelectricbrush?！猵latingcoatingoftheaxleofrailwayrollingstockhavebeenstudiedonthebasi

2、sofobservationofmaterialsmicrostructureandfailureanalysisAndmadesomeanalysisofthethick、technologyoftherepairedaxlewhichinfluencetheabilityoftheaxleagainstfrettingItisanoutstandingcharacteristicthatproducecracksinproceedi

3、ngoffrettingFatiguecrackshavebeenanalysisedbymeansofthestrainunderthefrettingsurfaceThecoating’sFrettingsurfaceanddebrisarecarefullyexaminedbyusingopticalmicroscope、SEMandXraydiffractometerrespectively，andgivethedamaging

4、technologyoffretting，announcethatcoatinghavepositiveasetoagainst能ttingdamageThickandtechnologyaretheimportantfactorsthatinfluencethecoating’SdamageinthesamematerialandsameexperimentalconditionsThequestionofcoating’Sthick

5、effectivenesshavebeencarefullystudiedinthispaper，andsomeviewsandsuggestionshavebeengivenTheresultofthermallysprayedcoatingandelectricbrush—platingcoatinghavebeenanalysisedandcompared，thendiscoveredthatdifferenttechnologi

6、esalsohavebeenimportantinferencetOcoating’sdamage，theirresulthaveadvantagesanddisvandagesrespectivelyAllthisinthestudyindicatethatthecoating’Svirtuemakeithaveallimportantandadvantageusetoagainstfretting，italsomeettheneed