简介：l、关键技术参数或产品性能YAG透明陶瓷材料采用强场熔铸制造的工艺技术制备而成。产品性能：0380×3～8mm，透明YAG陶瓷样品在可见光波段的透过率≥75％。2、功能及主要应用情况激光透明陶瓷是国际材料界研发的热点领域，在我国，这类材料主要应用于国家重大需求，即激光聚变点火工程和透明陶瓷装甲、大飞机工程、以及航天工程等。

简介：以YAG（Y3Al5O12，钇铝石榴石，Al2O3和Y2O3的反应产物）为主要助烧剂的SiC／YAG复合陶瓷材料具有许多优良的性能，在诸多领域中存在巨大的应用潜力。综述了近年来SiC／YAG复合陶瓷材料的研究进展，并提出了目前研究工作中尚存在的一些问题，指出SiC／YAG复合陶瓷仍具有广阔的发展前景。

简介：AcompositetransparentYAG/Yb:YAG/YAGceramicwaspreparedbyanon-aqueoustape-castingmethod.Anopticaltransmittanceof82%wasobtainedatvisiblewavelengthandaround1100nm.Alow-threshold,broadbandtunablecontinuous-wave(CW)laserat1031nmwasfurtherdemonstratedfromtheceramicsample,whichwaspumpedbya974nmfiber-pigtailedlaserdiode.Thethresholdpumppowerwas0.45Wandthemaximumoutputpowerwas3.2W,correspondingtoaslopeefficiencyof20.4%.ByinsertinganSF57prisminthelasercavity,theoutputwavelengthcouldbetunedcontinuouslyfrom1021to1058nm.

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简介：目的：观察倍频Nd：YAG激光联合YAG激光行周边虹膜切除术治疗急性闭角型青光眼的疗效及并发症。方法：本组共105例，其中临床前期91眼，先兆期32眼，间歇期46眼，均先使用倍频Nd：YAG激光在拟行周边虹膜切孔处分层射击，最后用YAG激光穿透造孔，随访12mo，观察疗效及并发症。结果：术后1～6h眼压暂时性升高，24h后眼压下降，虹膜周切孔均通畅，房角无粘连，3眼周切孔处局限性晶状体混浊。结论：倍频Nd：YAG激光联合YAC激光行周边虹膜切除术是防止闭角型青光眼急性发作的安全有效的手术。

简介：TransparentYAG(yttriumaluminumgarnet)ceramicswerefabricatedbysolid-statereactionmethod.Effectofadditive(tetraethylorthosilicate,TEOS)onmicrostructureofYAGceramicswasinvestigated.IftheadditionofTEOSismorethan3%(massfraction),largeamountofliquidphasecanbeyieldedatgrainboundaries,resultingintheformationofsecondphaseparticlesatgrainboundaries.Iftheadditionislessthan0.05%(massfraction),poresareentrappedinthegrains.Thesuitableamountis0.5%(massfraction).AfullytransparentYAGceramicwasfabricatedbyvacuumsinteringat1700℃for5h.OpticaltransmittanceoftheYAGceramicis63%inthevisiblelightwavelengthsand70%intheinfraredwavelengths.

简介：YAGlaserweldingwithsurfaceactivatingfluxhasbeeninvestigated,andtheinfluencingfactorsandmechanismarediscussed.TheresultsshowthatbothsurfaceactivatingfluxandsurfaceactiveelementShavefantasticeffectsontheYAGlaserweldshape,thatistoobviouslyincreasetheweldpenetrationandD/Wratioinvariousweldingconditions.Themechanismisthoughttobethechangeofweldpoolsurfacetensiontemperaturecoefficient,thus,thechangeoffluidflowpatterninweldpoolduetotheflux.

简介：Anewthulium-dopedyttrium-aluminium-garnet(YAG)crystalwithvariedconcentrationsofTmwasgrownbyAnhuiInstituteofOpticsandFineMechan-ics,AcademiaSinica.Owingtoitssuperadvantagesofawiderangeoffrequenciesandhighefficience,thegarnetisconsideredtobeaneffectivetunableinfraredlasercrystalandmeetstherequirementsofcoherent

简介：本刊讯4月8日,万利(中国)有限公司旗下"TOP陶瓷"品牌与中国陶瓷总部正式签约,宣布进驻中国陶瓷总部西区G01。TOP陶瓷相关负责人苏进益、营销总经理李平凡、执行董事龙强、中国陶瓷总部营运总经理汤洁明以及各界媒体代表出席了签约仪式。尽管2015年行情并不理想,但据TOP陶瓷相关负责人苏进益透露,2015年TOP还是实现了50%的增长。TOP是如何做

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简介：Yttriumaluminumgarnet(YAG)transparentceramicswerefabricatedbysinteringatoxygenatmosphere.Tetraethylorthosilicate(TEOS)wasaddedasthesinteringadditivetocontrolthegraingrowthanddensification.Poreswereeliminatedclearlyattemperaturelowerthan1700oC,whilegrainsizewasaround3μm.Thein-linetransmittancewas80%at1064nmwhensamplesweresinteredat1710oC.TheeffectofTEOSwasstudiedinoxygenatmospheresinteringforNd:YAGtransparentceramics.Athighertemperaturelike1710oC,thegraingrowthmechanismwassolutedrag,whileat1630and1550oCthegraingrowthwascontrolledbyliquidphasesinteringmechanism.And0.5wt.%TEOSwasthebestaddingcontentforNd:YAGsinteredinoxygenatmosphere.

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简介：AIM:Toinvestigatetheeffectsofanewopeningpatterninneodymium:yttrium-aluminum-garnet(Nd:YAG)laserposteriorcapsulotomyonvisualfunction.METHODS:Thistechniquewasconductedalongacircularpattern.Theenergyrangedbetween0.8and1.2mJ/pulsewasconsumedandmeantotalenergylevelswere74±21mJ(mean±standarddeviation:SD,from40to167)andlasershotsaimedat150μmawaybehindadatumpointandwentalonganimaginarylinewhichextends0.5mminsidefromopticmarginandintothecircularenblocpattern.Vitreousstandswereattachedwithfragmentandthentheywerecutoffbythelaseraftercircularapplication.Thecircularfragmentwascompletelyseparatedfromvitreous,andthenthisfragmentwasquicklysunkinintravitrealspace.RESULTS:Thefollow-upperiodrangesfromatleastaweekto40mo,making15.8moonaverage.Theproceduraloutcomeshowed96%(74eyesoutofthe77eyes)enhancementinpatients’visualacuity.Cystoidmacularedemaorretinaldetachmentwasnotobservedinanyofthepatientsduringfollow-upperiods.CONCLUSION:Thisnewtechniqueisexpectedtoimprovetheweaknessesthattheconventionalprocedureshavebyaddingtheprocesstocutoffvitreousstandsattachedwiththefragmentbythelasertothecircularapplication.

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简介：矾红陶瓷低温釉上颜料。亦称“铁红”、“红彩”、“虹彩”。呈不透明大红色。产生于宋代，为釉上多种彩的前驱，后沿用于明代万历红彩、铅粉86％配制而成。着色成分为三氧化二铁。制法将硫酸亚铁（青矾）锻烧、漂洗，加入铜粉作熔剂，磨细备用。如作颜色釉色料，则调成釉浆，施于陶瓷器釉面上，氧化焰以900℃左右低温烤烧之。明代嘉靖时，御器厂以矾红釉取代铜红釉。