共查询到20条相似文献,搜索用时 312 毫秒
1.
1IntroductionTherearealotofnonmetallicmaterialssuchasceramics,fiberreinforcedplasticsandvariouswoodbasedproducts,nonferrousmetalsandalloys,andcompositeswhichcannotbemachinedusingcementedcarbidecuttingtools.Withthecontinualdevelopmentsandengine… 相似文献
2.
1IntroductionAsacriticalmaterialbeingserved,titaniumanditsalloyswerewidelyusedinaerospaceindustry.Sincetitaniumalloyspossessbetterperformancesthanconventionalstructuralmaterials,suchasstrengthtoweightratio,corrosionresistance,heatresistanceetc.,… 相似文献
3.
1 INTRODUCTIONRaneyNicatalyst,whosecomponentisNiAlalloy,isafinepowderknownashydrogenationcatalyst.Accordingtothechemicalreaction,sometimesRaneyNicatalystmustbefilledwithsomemircroelementsofcatalystacceleratorsuchasCr,Cu,Co,Mn,Fe,etc.Theskeletonni… 相似文献
4.
Z.Y.Liu X.Q.Wang Y.T.Wang M.X.Wang G.S.Wang G.H.Li Material Physics Laboratory Zhengzhou University Zhengzhou China 《金属学报(英文版)》1999,12(5):856-859
1.IntroductionManymetallurgistshavestudiedhowtogetelectrolyticbinaryalloys,suchasAlSi,AlTiandAlMnect.inaluminumelectrolyzer〔1,2〕.G.Q.YangandX.Q.Guetc.producedAlSi(205%)Ti(025%)Fe(030%)multicomponentalloythroughdirectlyelectrolyzingbauxitein… 相似文献
5.
1.IntroductionCeramicspreparationviaprecursorpyrolysishasbeenshowingagreaterpromisesincetheonlycommerciallyavailablesiliconcarbidefiber,NicalonTM,wasproducedthroughsuchamethod〔1〕.Nowpreceramicpolymersarefindingapplicationsinmuchbroaderfields,suchasCe… 相似文献
6.
EFFECT OF PRECIPITANT ON THE PROPERTIES OF ULTRAFINE YTTRIA POW DER PRODUCED BY PRE CIPITATION METHOD 总被引:2,自引:0,他引:2
Y. Q. Jia) J. G. Li) Y. M. Wang) L. X. Ding) X. M . Qin) X. D. Sun)) School of Materials Metallurgy Northeastern University Shenyang China) Department of Materials School of Mechanical Engineering She 《金属学报(英文版)》1999,12(5):1188-1193
1.IntroductionHighreactivityandgoodphysicalandchemicalhomogeneityofultrafineceramicpowdersenablesdensificationofthematerialsatlowertemperaturesandmicrostructurecontrolonalevelof1~100nm〔12〕.Yttriumoxideisoneofthemostimportantceramicmaterialsandisuse… 相似文献
7.
HARDNESS AND WEAR RESISTANCE OF ELECTROLESS NICKEL DEPOSITS 总被引:1,自引:0,他引:1
Zhang Yongzhong Zhang Kui Fan Jianzhong Zhang Shaoming General Research Institute for Nonferrous Metals Beijing P. R. China Yao Mei School of Materials Science Engineering Harbin Institute of Technology Harbin P. R. Chi 《中国有色金属学会会刊》1998,(4)
INTRODUCTIONElectrolesNiPdepositshavebeenwidelyusedindiversefieldsfortheiruniquecombinationofpropertiessuchascorosionresist... 相似文献
8.
M.A.Morris M.Leboeuf Institute of Structural Metallurgy University of Neuchtel Neuchtel Switzerland 《中国有色金属学会会刊》1999,(Z1)
1 INTRODUCTIONThecreepresistanceoftwophasetitaniumaluminidealloyshasbeenconfirmedtodependnotonlyonlamellarvolumefractionorgrainsizebutalsoonotherparameterssuchasthemorphologyofeachphase[1-4].Thepresenceoflamellarinterfacesleadstoimprovedcreepresis… 相似文献
9.
N. Wang B.S. Zhou Z.D. Wang D.D. Wu College of Mechanical Engineering East China University of Science Technology Shanghai China 《金属学报(英文版)》1999,12(1):31-35
1.IntroductionAlotofequipmentworksunderelevatedtemperatureandhighpresureenvironmentinpetrochemicalindustry.Notonlyplasticand... 相似文献
10.
S.H. Li J.S.Li S.X. Wang Y.J. Yin J.J. Wang Ordnance Engineering College Shijiazhuang China 《金属学报(英文版)》1999,12(5):921-924
1.IntroductionThepositionofpipetransportbecomesmoreandmoreimportantalongwithhighspeeddevelopingofmodernindustry.Nevertheless,nevercommonmetalnornonmetalmaterialwerecapableofactioninthecostandfunctionwhenitfacedupthebadenvironmentsuchaswear,erosionan… 相似文献
11.
1.IntroductionAlumniummatrixcomposite,duetoitsexcellentcomprehensivepropertiessuchashighspecificstrength,highspecificmodule,resistancetoelevatedtemperature,resistancetoradiationandgooddimensionalstability,hasattractedgreatattentionfrommaterialscie… 相似文献
12.
Surface Carbonization of Mo-La2O3 Cathode 总被引:1,自引:0,他引:1
Nie Zuoren 《中国有色金属学会会刊》1999,9(3)
1 INTRODUCTIONCarbonizationisveryimportanttomanufacturingdirectheatingmetalliccathode,whichleadstolowertheoperatingtemperatureandimprovethestableemission.Intherecentyears,themolybdenumaddedwithrareearthoxides,suchasLa2O3,hasbeenstudiedasaveryhope… 相似文献
13.
P. F. Xing L. F. Ma K. Quan Y. C. Zhai School of Materials Metallurgy Northeastern University Shenyang China 《金属学报(英文版)》1999,12(5):1171-1174
1.IntroductionAmmoniumthiotungstateisusedasrawmaterialforpreparingWS2〔1〕bythermaldecompositionmethod.AsWS2hasmanyadvantagessuchascorrosionresistance,nopoison,nopollution,widetemperaturerangeforapplicationandsmallfrictioncoefficient,itisextensivelyus… 相似文献
14.
Sun Ting 《中国有色金属学会会刊》1999,9(3):3
1 INTRODUCTIONThepreparationofAlSialloysbyelectrothermalprocesshasbeenadvancingmoregreatlythanthatbycryolitealuminameltingelectrolysis.Ithasmanyadvantagessuchasshortcircuit,smallinvestmentofequipments,highproductionandutilizationrateofenergy.Espec… 相似文献
15.
G.L.Huang Department of Materials Engineering Jiangsu University of Science Technology Zhenjiang China 《金属学报(英文版)》1999,12(5):845-848
1.Introduction45steelisusedwidelyinChina.Theprocessisasusualthefollow:forgingmachiningroughlyquenchingtemperingathightemperaturemachiningfinely.Consumingenergyandbadsurfaceconditionarethemajordefectsofthisprocess.Sometimesthefine,homogeneousaust… 相似文献
16.
Y. X. Chen X. J. Wan W. X. Xu * Shanghai University Shanghai China * Shanghai Iron Steel Research Institute Shanghai China 《中国有色金属学会会刊》1999,(Z1)
1 INTRODUCTIONRecentstudieshavedemonstratedthatanumberoforderedintermetallicscontainingreactiveelements,suchasAl,Ti,andSiaresusceptibletoenvironmentalembrittlementwhentestedinairatroomtemperature.Thisphenomenonisbelievedtobeahydrogenembrittlementp… 相似文献
17.
J.Y. Zhang Z.Y. Fu W.M Wang H. Wang X.M. Min State Key Lab .of Advanced Technologyfor Materials Synthesis Processing Wuhan University of Technolo gy Wuhan China 《金属学报(英文版)》1999,12(4):395-400
1.IntroductionWettabilitybetweenceramicandmetalisaveryimportantaspectoftheresearchanddevelopmentofCeramic/MetalComposites(CMC),whichhasagreateffectonthemicrostructureandpropertiesofCMC.Howevertheclassictheoryandmethoddidn’tshowtheinnerconnectionofco… 相似文献
18.
Wu Shusen 《中国有色金属学会会刊》1999,9(3)
1 INTRODUCTIONAstheparticlereinforcedaluminummatrixcompositesaresuperiorinstrengthandwearresistance,theapplicationsofthecompositeshavebeenadvancedinmanyaspects,suchasinautomobilepartsandsportsarticles[1~3].However,forthemassiveproductionofthecompos… 相似文献
19.
Z.Y. Lu ) S.M.An ) B.H.Cuo ) W.M.Li ) Y.Mei Y.L.Xia ) J.Xu ) ) Department of Mechanical Engineering Yangzhou University Yangzhou China ) Dalian University of Technology Dalian China 《金属学报(英文版)》1999,12(5):816-820
1.IntroductionThesiliconnitride(Si3N4)issuitableforapplicationsasprotectivecoatingsduetoitshighhardness,superiorchemicalstabilityandmechanicalpropertiesathightemperature,suchasresistanceagainsthotshockandhotfatigue.TheSi3N4filmsweremainlyproducedb… 相似文献
20.
Hot top electromagnetic casting research of Al thin slab 总被引:3,自引:0,他引:3
Zhang Xingguo 《中国有色金属学会会刊》1999,9(3):4
1 INTRODUCTIONElectromagneticcasting(EMC)isamouldlesscontinuouscastingtechnologywithwhichliquidmetalisshapedbyelectromagneticforceandithasadvantagessuchas:smoothingotsurface,compact,homogeneoustissueandhighercastingvelocity.EMCtechnologyhasbeendev… 相似文献