|
OALib Journal期刊
ISSN: 2333-9721
费用：99美元
|
|
|
|
la2o3-y2o3-zro2纳米陶瓷粉末制备及高温相稳定性
Keywords: 无机非金属材料,？稀土共掺杂二氧化锆,？纳米粉末,？共沉淀,相稳定性
Abstract:
？用化学共沉淀法制备4.5%y2o3--zro2(ysz)和0.6%la2o3--ysz、0.8%la2o3--ysz、1.2%la2o3--ysz(0.6la、0.8la、1.2la)(摩尔分数)纳米复合陶瓷粉末,研究了四组粉末的高温相稳定性。结果表明:采用正向滴淀方法制备的0.6la粉末(粒径~50nm)团聚严重,而用反向滴淀方法制备的0.6la粉末(粒径~20nm),粉末团聚少;各组前躯体粉末在600℃煅烧2h后都呈单一四方相结构;在1200℃烧结100h后0.6la、0.8la坯体呈单一四方相结构,无相变,ysz和1.2la坯体都有立方相且1.2la坯体有锆酸镧相生成;在1300℃烧结100h后0.6la,0.8la,1.2la坯体呈四方相和立方相结构,其中1.2la坯体有锆酸镧相生成,在相同条件下烧结的ysz坯体有少量(~1.5\%)单斜相产生;在1400℃烧结100h后各组份中四方相已不能保持稳定,转化为单斜相和立方相,0.6la、0.8la、1.2la、ysz坯体单斜相含量分别为30.5%,32%,35%,46.0%。在ysz中添加少量la2o3在1300℃烧结能有效改善其高温相的稳定性。
| [1] | 2m.matsumoto,n.yamaguchi,h.matsubara,lowthermalconductivityandhightemperaturestabilityofzro2–y2o3–la2o3coatingsproducedbyelectronbeampvd,scriptamaterialia,50,867(2004)
|
| [2] | 5r.l.jones,r.f.reidy,d.mess,scandia,yttria–stabilizedzirconiaforthermalbarriercoatings,surfaceandcoatingstechnology,82,70(1996)
|
| [3] | 6m.n.rahaman,j.r.gross,r.e.dutton,h.wang,phasestability,sintering,andthermalconductivityofplasma–sprayedzro2–gd2o3compositionsforpotentialthermalbarriercoatingapplications,actamaterialia,54,1615(2006)
|
| [4] | 11zhouhong,lifei,hebo,wangjun,sunbaode,nanostructuredyttriastabilizedzirconiacoatingsdepositedbyairplasmaspraying,transactionsofnonferrousmetalssocietyofchina,17,389(2007)
|
| [5] | 12zhouhongming,yidanqing,researchonpreparationandthermophysicalpropertiesofdy2zr2o7ceramicpowder,journalofaeronauticalmaterials,28(1),65(2008)
|
| [6] | (周宏明,易丹青,热障涂层用dy2zr2o7陶瓷粉末制备及其热物理性能研究,航空材料学报,28(1),65(2008))
|
| [7] | 13y.t.moon,h.k.park,d.k.kim,c.h.kim,i.s.seog,preparationofmonodisperseandsphericalzirconiapowdersbyheatingofalcohol–aqueoussaltsolution,journalamericanceramicsociety,78(10),2690(1995)
|
| [8] | 14z.c.michael,e.p.andrew,h.b.charls,sol–gelandultra–fineparticleformationviadielectrictuningofinorganicsalt–alcohol–watersolutions,journalofcolloidandinterface
|
| [9] | science,222(1),20(2000)
|
| [10] | 15j.y.choi,d.k.kim,preparationofmonodisperseandsphericalpowdersbyheatingofalcohol–aqueoussaltsolutions,journalofsol–gelscienceandtechnology,15(3),
|
| [11] | 231(1999)
|
| [12] | 16h.chen,y.gao,y.liu,h.luo,coprecipitationsynthesisandthermalconductivityofla2zr2o7,journalofalloysandcompounds,480,843(2009)
|
| [13] | 17h.yang,j.ouyang,x.zhang,n.wang,c.du,synthesisandopticalpropertiesofyttria–dopedzro2nanopowders,journalofalloysandcompounds,458,474(2008)
|
| [14] | 18j.sun,l.gao,pheffectontitania–phasetransformationofprecipitatesfromtitaniumtetrachloridesolutions,journalofamericanceramicsociety,85(9),2382(2002)
|
| [15] | 19s.g.chen,y.s.yin,d.p.wang,j.li,reducedactivationenergyandcrystallinesizeforyttria–stabilizedzirconianano–crystals:anexperimentalandtheoreticalstudy,journalofcrystalgrowth,267,100(2004)
|
| [16] | 20s.g.chen,y.s.yin,d.p.wang,experimentalandtheoreticalinvestigationonthecorrelationbetweenaqueousprecursorsstructureandcrystallinephasesofzirconia,journal
|
| [17] | ofmolecularstructure,690,181(2004)
|
| [18] | 21gerongde,zhaotiancong,computersimulationonthestructureofcolloidalaggregatesformedduringchemicalprecipitation,journalofcentralsouthinstituteofminingandmetallurgy,24(5),607(1993)
|
| [19] | (葛荣德,赵天从,化学沉淀过程中形成的胶粒团聚体结构的计算机模拟,中南矿冶学院学报,24(5),607(1993))
|
| [20] | 22m.leoni,r.l.jones,p.scardi,phasestabilityofscandia–yttria–stabilizedzirconiatbcs,surfaceandcoatingstechnology,108–109,107(1998)
|
| [21] | 23c.viazzi,j.p.bonino,f.ansrat,abarnab′e,structuralstudyofmetastabletetragonalyszpowdersproducedviasol–gelroute,journalofalloysandcompounds,452,377(2008)
|
| [22] | 27j.w.jang,d.j.kim,d.y.lee,sizeeffectoftrivalentoxidesonlowtemperaturephasestabilityof2y–tzp,journalofmaterialsscience,36,5391(2001)
|
| [23] | 1m.matsumoto,k.aoyama,h.matsubara,k.takayama,t.banno,y.kagiya,y.sugita,thermalconductivityandphasestabilityofplasmasprayedzro2–y2o3–la2o3coatings,surfaceandcoatingtechnology,194,31(2005)
|
| [24] | 3x.huang,d.wang,m.lamontagne,c.moreau,experimentalstudyofthethermalconductivityofmetaloxidesco–dopedyttriastabilizedzirconia,materialsscienceandengineeringb,149,63(2008)
|
| [25] | 4f.m.pitek,c.g.levi,opportunitiesfortbcsinthezro2–yo1.5–tao2.5system,surface&coatingstechnology,201,6044(2007)
|
| [26] | 7m.matsumoto,h.takayama,d.yokoe,k.mukai,h.matsubara,y.kagiya,y.sugita,thermalcyclebehaviorofplasmasprayedla2o3,y2o3stabilizedzro2coatings,scriptamaterialia,50,2035(2006)
|
| [27] | 8h.dai,x.zhong,j.li,y.zhang,j.meng,x.cao,thermalstabilityofdouble–ceramic–layerthermalbarriercoatingswithvariouscoatingthicknes,materialsscienceandengineering
|
| [28] | a,433,1(2006)
|
| [29] | 9c.viazzi,j.p.bonino,f.ansart,a.barnab′e,structuralstudyofmetastabletetragonalyszpowdersproducedviasol–gelroute,journalofalloysandcompounds,452,377(2008)
|
| [30] | 10h.chen,c.x.ding,nanostrueturedzirconiacoatingpreparedbyatmosphericplasmaspraying,surfaceandcoatingstechnology,150,31(2002)
|
| [31] | 24liuhuaifei,lisonglin,liqilian,liyongming,zhouwuxi,preparationandphasestabilityathightemperaturesofla2o3,y2o3codopedzro2ceramicpoeder.,jounalofinorganicmaterials,24(6),1(2009)
|
| [32] | (刘怀菲,李松林,李其连,李勇明,周伍喜,热障涂层用la2o3,y2o3共掺杂zro2陶瓷粉末的制备及其相稳定性研究,无机材料学报,24(6),1(2009))
|
| [33] | 25x.q.cao,applicationofrareearthsinthermalbarriercoatingmaterials,journalofmaterialsscienceandtechnology,23(1),15(2007)
|
| [34] | 26e.r.andrievskaya,l.m.lopato,influenceofcompositiononthet→mtransformationinthesystemszro2–ln2o3(ln=la,nd,sm,eu),journalofmaterialsscience,30,2591(1995)
|
Full-Text
|
|
Contact Us
service@oalib.com QQ:3279437679 
WhatsApp +8615387084133
|
|
