简介:摘要:随着国家城市建设进程的迅速发展以及建筑行业技术不断升级发展,传统的外墙板逐渐被具有更好保温和防水性能,以及更高效率的外墙板所取代。其中,以ALC墙板为主的新型墙材越来越广泛地应用于各种类型的建筑中。单从此材料的防水性能来看,ALC轻质墙板具有防火性能及隔音性能佳、环保经济、拼接速度快、免抹灰或薄抹灰、质量可控性强等优势。为了实现墙体革新和有效利用工业废料,目前,ALC墙板已形成积极推广的成熟施工技术,可保证墙板的安装及使用质量,但针对上述优点,还需对相关的防渗质量控制措施进行研究,从而避免因外墙渗漏水造成的影响以及减少后期的维护费用。
简介:摘要:ALC墙板是一种新型的轻质板材,其主要的生产原料为粉煤灰、硅砂和水泥等,生产工艺与其他材料的墙体材料相比较为简单,同时,在制作过程中不需要添加其他的材料,因此其自身质量较轻,且施工便捷。ALC墙板的使用范围十分广泛,主要适用于公共建筑、工业厂房等的建筑工程之中,能够很好地提高工程建设的效率。本文主要以某项目为例,对 ALC墙板进行了简单的介绍,并结合 ALC墙板施工过程中存在的问题进行了分析。同时对 ALC墙板快速施工及质量措施进行了详细阐述,希望能够为相关工作者提供一些帮助和借鉴。希望通过本文的研究能够为 ALC墙板快速施工及质量控制提供一些参考。
简介:VolumeⅠandVolumeⅡoftheProcee-dingsoftheFirstInternationalCon-ferenceontheMetallurgyandMaterialsScienceofTungsten,Titanium,RareEarthsandAntimonywerepublishedinanEnglishversionbyInternationalAcade-micPublishers(aPergamon-CNPIECJointVenture).TheconferencewasheldinChangsha,Chinalastyear.
简介:ATi/Sicomplexzeolitehasbeenprepared.X-raydiffractionandinfraredspectrometrystudyhasshownthattwostructures,namelytheZSM-5andMCM-41,existinthesample.BETtestshaverevealedthatthecomplexzeolitecontainsregularmesoporesof2.6nm.UltravioletspectrometryanalysishasshownthattheTispeciesexistinthezeoliteskeletonintheformoftetra-coordinatevalence.TheTi/Sicomplexzeolite(TS-1/Ti-MCM-41)hasapparentlyimprovedcatalyticactivitywithrespecttothemacromolecularorganiccompoundoxidationascomparedtoindividualcomponentsofeitherTiorSicontainingzeolites(TS-1andTi-MCM-41).
简介:Li1.3Al0.3Ti1.7(PO4)3pelletssinteredwithdifferentmolefractionsofLiBO2werepreparedbysol-gelmethod.Thestructuralidentification,surfacemorphology,ionicconductivity,andactivationenergyofthepelletswerestudiedbyX-raydiffraction,scanningelectronmicroscopy,andelectrochemicalimpedancespectroscopy.TheresultsshowthatalltheLi1.3Al0.3Ti1.7(PO4)3pelletssinteredwithdifferentmolefractionsofLiBO2havesimilarX-raydiffractionpatterns.ThesinteredpelletbecomesdenserandtheboundaryandcorneroftheparticlesbecomeillegiblewiththeincreaseofLiBO2.AmongtheLi1.3Al0.3Ti1.7(PO3)4pelletssinteredwithdifferentmolefractionsofLiBO2,theonesinteredwith1mol%LiBO2showsthehighestionicconductivityof3.95×10-4S.cm-1andthelowestactivationenergyof0.2469eV.
简介:Highentropyalloyhasattractedincreasingattentions.However,toenhancethealloystrengthoftenleadstoimpairmentoftheductility,orviceversa.HerewereportedaheattreatmentapproachonAlCrFeNi2Ti0.5highentropyalloy,whichcanelevatethestrengthandductilitysimultaneously.AningotofAlCrFeNi2Ti0.5weighing2.5kgwasfirstlyfabricatedbymediumfrequencyinductionmelting.Thensamplesfromthesameheightofthebulkingotwereannealedfor6hat600,700,800and1000℃,respectively.After1000℃annealing,anoptimalmicrostructurewasobtainedbyusingourapproachwhichcanmakesomeprecipitationparticlesdistributehomogeneouslyinthedendriteinteriorwhilekeeptheinterdendritestructureasasinglesolidsolutionphase.ThemechanicaltestonthisAlCrFeNi2Ti0.5alloysampleshowedthat,thecompressivefracturestrengthσbcwasincreasedbyabout600MPaandtheplasticstrainepwasdoubled,comparedwiththoseoftheas-castsample.Ourapproachcanbereadilyadaptedtolarge-scaleindustrialproductionofhighentropyalloyswithhighstrengthandductilitybyproperannealingtreatment.
简介:为了分析含钒钛转炉渣氧压酸浸过程的热力学特点,根据高温水溶液中计算标准摩尔吉布斯自由能和活度系数的经验公式,通过计算得到了氧分压0.5MPa、对应离子的质量浓度0.1mol/kg、温度60~200℃条件下V-Ti-H2O系的电位-pH图。在pH〈2的酸性条件下,可溶性V3+,VO2+,VO2+的稳定区几乎全部包含在TiO2的稳定区范围内,随着温度由60℃升高到200℃,钒、钛稳定共存区对应的氧化还原电位逐渐增大,pH逐渐降低。钒、钛稳定区的共存特点从热力学角度为转炉渣采用氧压酸浸工艺通过一步酸浸将钒浸出的同时使钛富集在渣中提供了理论依据。含钒钛转炉渣的氧压酸浸实验结果表明,在浸出温度140℃、氧分压0.5MPa、粒度0.055~0.075mm、液固比15:1、浸出时间120min、搅拌速度500r/min、初酸浓度200g/L的条件下,钒的浸出率为96.87%,钛的浸出率为8.76%。钒与钛通过氧压酸浸工艺能够得到有效分离,实验结果与热力学计算结果一致。
简介:15%Ag-addedcubicperovskitesSr0.9La0.1TiO3andRuddlesden-Popper(RP)phasesSr2.7La0.3Ti2O7werefabricatedviahydrothermalsynthesis,coldpressingandhigh-temperaturesintering.Thestructureandthermoelectricpropertieswerealsoinvestigatedforallsamples.TheresultsindicatedthatAgprecipitatedasasecondphase.AgadditionmadeelectricalconductivityandabsoluteSeebeckcoefficientenhanced,asaresult,theZTvalueswereenhancedbothfortwoseries.Comparedwithcubicperovskite,RPphasewassubjectedtosmallerimpactbyAgaddition.ThereasonsforenhancingZTvalueandthedifferentimpactfortwoseriesbyAgadditionwerealsodiscussed.