SiC-,p-化學(xué)鍍覆與基體合金化對(duì)鐵合金基復(fù)合材料組織與性能的影響.pdf

1、合肥工業(yè)大學(xué)碩士學(xué)位論文SiC化學(xué)鍍覆與基體合金化對(duì)鐵合金基復(fù)合材料組織與性能的影響姓名：陳曙光申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：材料學(xué)指導(dǎo)教師：丁厚福鄭治祥2001.5.1EFFECTSOFCOATINGSONSiCpANDALLOYADDITIONONTHEPROPERTIESANDMlCROSTRUCTURESOFFERRITEALLOY—BASEDCOMPOSITESABSTRACTBecauseofitsexcellentpropert

2、ies，suchashighstrength，highmodule，wearresisting，etc，SiCpisaddedtoferritealloybasedcompositesasareinforcephaseButtheintrinsicdifierencebetweenitscovalentbondandmetallicbondofFemakesthepropertiesofcompositesmadefromFeandSi

3、CpbadInthispaper，theeffectsofcoatingsonSiCpandalloyadditiononthepropertiesandmicrostructuresofferritealloy—basedcompositesarestudied，andthedetailsareasfollows：Inthispresentwork，theprocessesofelectrolessnickelplatingandel

4、ectrolesscopperplatingonSiCpusinghypophosphiteasreducingagentareoptimizedwithorthogonalexperiments，andSiCpcoveredwithnickelcoatingandcopper—nickelalloycoatingareobtainedAstheresultsshowtheconcentrationofNi2andtheratioofI

5、Ni”]／【H2P02]haveastronginfluenceonthedepositionrateofelectrolessnickelplating，thecoatingismainlycomposedofpartialamorphousnickelandnickelphosphorusalloyNi2Pchemicalcompound，etc，andtheparticlesarefinedispersed；thepHvaluea

6、ndtheconcentrationofNi2haveastronginfluenceonthedepositionrateofelectrolesscopperplating，thecoatingiscopper—nickelalloytheparticlesatefinedispersed，andthesurfaceofdepositedcoatingisuniformTheeffectsofcoatingsonSiCpandall

7、oyadditiononthepropertiesandmicrostructuresofferritealloybasedcompositesatestudied，whichismadeundertheconditionofsinteringat1150“CforonehourandisexposedinaatmosphereofpurehydrogenatthesametimeAstheresultsshowwhen2叭％Ni05w

8、t％Moand15％Fe—CrareaddedinFe—Cu—CakindofFe—Cu—CNi—Mo—CrstrengtheningFe—basedalloywithhighstrengthandhighhardnessisobtainedThenbareSiCPNickelcoatedSiCpandCopper—NickelcoatedSiCpateaddedinFe—CuC—NiMo—Cratthesamemassfraction

9、individuallytheresultsshoWthatNickelcoatedSiCpincreasedthehardnessofthebasegreatlybutreducedthestrengthofthebaseatahighdegreeatthesametime，baredSiCpreducedthehardnessofthebasegreatlybutthestrengthofthebaseisreducedslight