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1.
1.IntroductionSiChasbeenwidelyusedasspecialrefractories.Withdifferentbondingphases,SiCrefractoryscanbeclassifiedintooxide/SiC,Si3N4/SiC,Sialon/SiCandSiC/SiCsystems.TheSialon(Si6zAlzOzN8x,0<z<4.2)/SiCsystem,duetoitsbetterphysicalandchemicalpropertie…  相似文献   

2.
1.IntroductionAsiswellknown,selfmeltedNibasedalloyshavegoodwearresistance,corrosionresistanceandheatresistance.Theyhavebeenwidelyusedasprotectivecoatingsonmaterialsurfaceandwearresistantcoatingsonordinaryheatresistingworkpieces.Amechanicalbondingi…  相似文献   

3.
1 INTRODUCTIONItiswellknownthataluminumelectrolysisisa“largefamily”ofelectroenergyconsumption .Inthemeantime ,carbonanodesareusedupcontinuouslyintheprocessofelectrolysis ,sothealuminumelectrolysisisal socalled“largefamily”ofcarbonconsumption .Foralongtime…  相似文献   

4.
1 INTRODUCTIONNi W Palloy possessesexcellentmagnetism ,strength ,goodheat resistanceandidealwearandcor rosionresistance ,whichhasattractedthesurfacefin ishingandengineeringcommunitiesformanyyears[1,2 ] .B4 Cisakindofceramicpowerwithhighhardnessandfinewear resis…  相似文献   

5.
1 INTRODUCTIONNiTiandNiTiNbshapememoryalloysarewellknowntoexhibitdifferenttemperaturehysteresisinanunstressedstate[1,2],i.e.theinherenthysteresisofthermoelasticmartensitetransformation.Thelatterhavewidertransformationhysteresisthantheformer[3~5].Fromtheview…  相似文献   

6.
Discussiononthephysicsphenomenaandthemechanismofformingweldjointintheprocessofcopper-stainlesssteelfrictionwelding¥ShiKai(Xi'...  相似文献   

7.
Expert control strategy using neural networks for electrolytic zinc process   总被引:2,自引:0,他引:2  
1 INTRODUCTIONThethreebasicstepsinzinchydrometallurgyareleaching ,purificationandelectrolysis .Theelectrolyt ic processinvolves passinganelectricalcurrentthroughinsolubleelectrodestocausethedecomposi tionofanaqueouszincsulfateelectrolyteandthede positiono…  相似文献   

8.
1.IntroductionNiCrMoalloycastironisoftenusedtomakerollers.AddingSiCparticlesinittoformcompositecanimproveitswearresistanceandimpactstrengthproperties.ThismainlydependsonthestateofdistributionofSiC,SiCfactorandthecombinationstrengthbetweenthetwos.Toi…  相似文献   

9.
1INTRODUCTIONTherearetwokindsofhydraulicnetworks,i.e.4armsbridgehydraulicresistancenetworkandhalfbridgehydraulicresistancene...  相似文献   

10.
1.IntroductionThesiliconnitride(Si3N4)issuitableforapplicationsasprotectivecoatingsduetoitshighhardness,superiorchemicalstabilityandmechanicalpropertiesathightemperature,suchasresistanceagainsthotshockandhotfatigue.TheSi3N4filmsweremainlyproducedb…  相似文献   

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