車軸抗微動(dòng)損傷涂層的厚度效應(yīng)及工藝影響研究.pdf

1、北方交通大學(xué)碩士學(xué)位論文車軸抗微動(dòng)損傷涂層的厚度效應(yīng)及工藝影響研究姓名：孫琰申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：機(jī)車車輛指導(dǎo)教師：何慶復(fù)19981201ABSTRACTInthispaper，frettingmechanismsofthermallysprayedcoatingandelectricbrush。——platingcoatingoftheaxleofrailwayrollingstockhavebeenstudiedonthebasi

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