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《高透明高摻雜Nd：YAG透明陶瓷的制備及工藝研究》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、摘要摘要相較于單晶和玻璃等常規(guī)激光工作物質(zhì)，Nd：YAG(摻釹釔鋁石榴石)透明陶瓷材料具有良好的光學(xué)性能和機(jī)械強(qiáng)度以及穩(wěn)定的物理化學(xué)性質(zhì)。因此，Nd：YAG透明陶瓷引起了人們的廣泛關(guān)注，在激光和發(fā)光領(lǐng)域得到了廣泛的應(yīng)用。本文用固相反應(yīng)法、溶膠一凝膠法合成了Nd：YAG納米前驅(qū)粉體。經(jīng)單軸單向在lOMPa壓力下預(yù)壓成型后，將生坯體置于熱壓燒結(jié)爐中進(jìn)行無壓真空(10嗎Pa)燒結(jié)，最終得到了性能良好的光學(xué)陶瓷。論文中系統(tǒng)地研究了透明陶瓷的制備及燒結(jié)工藝。研究了固相反應(yīng)法、溶膠一凝膠方法制備Nd：YAG納
2、米粉體的工藝及透明陶瓷的燒結(jié)機(jī)理；并對燒結(jié)制度控制方法進(jìn)行了初步研究，最后得到了一條較為合理的燒結(jié)制度。實(shí)驗(yàn)中，應(yīng)用了X-ray衍射儀(XRD)、掃描電鏡(SEM)、紫外可見分光光度計(jì)(Uv—VIS)、能譜分析儀等測試儀器及手段對Nd：YAG超細(xì)粉體和Nd：YAG多晶陶瓷進(jìn)行表征。考察了粉體成形方法和燒結(jié)制度與透明陶瓷微觀形貌和透過率的關(guān)系，最后找出了影響陶瓷透光性的各種因素。關(guān)鍵詞：摻釹釔鋁石榴石固相反應(yīng)法溶膠凝膠法多晶陶瓷AbstractComparedwitllsinglecrystalan
3、dglassandotherconventionallasermaterials,Nd：YAG(neodymium—dopedyttriumaluminumgarnet)transparentceramicsmaterialhasgoodopticalperformanceandmechanicalstrengthandstabilityofthephysicalproperties．Nd：YAGtransparentceramicshavebeenatopicofconcern,Luminesc
4、enceiIlthefieldoflaserandhasbeenwidelyapplied,owingtoitsgoodproperties．Inthisdissertation,Nd：YAGsuperfinepowderswereobtainedthroughsolidstatemethod，sol-gelmethod．Theas-preparedNd：YAGpowderswereuniaxiallypressedat10MPa．Thenpoly—crystalNd：YAGceramicswit
5、hgoodopticalpropertieswerefabricatedbysinteringthesamplesundervacuumatmosphere(×10-3Pa)．Thepreparationtechniquesoftransparentceramicsandthesinteringprocesseswerediscussedsystemicallyinthisdissertation．Thesolidstatereactionmethod，s01．gelmethodofprepara
6、tionofNd：YAGnano-powdersoftheprocessandtransparentceramicsinteringmechanismwerestudied；thenthesinteringsystemcontrolmethodwaspreliminarystudiedandfinallygotamorereasonablesinteringsystem．TheX-raydiffractionmeter(XRD)，thescanningelectronmicroscope(SEM)
7、，theultravioletobviousspectrophotometer(ov-vls)，thespectrumanalyzersandothertestinstrumentsandmeanswereusedtocharacterizetheNd：YAGultrafmepowderandNd：YAGpolycrystallineceramicsintheexperiment．Therelationshipbetweenpowderformingmethods，sinteringsystema
8、ndtransparentceramicmicro-morphologyandtransmittanceWasfullystudied．Finallyidentifiedthefactorsinfluencethetransparentoftheceramics．Keywords：Nd：YAGsolidstatemethodSol·-Gelpoly·crystalceramics創(chuàng)新性聲明本人聲明所呈交的論文是我個(gè)人在導(dǎo)師指導(dǎo)下進(jìn)行的研究工作及取得的研究成果。盡我所知，除了文中特別
