简介：ＥｎｅｒｇｙＣｏｎｓｕｍｐｔｉｏｎｉｎＴｕｎｇｓｔｅｎＥｘｔｒａｃｔｉｖｅＭｅｔａｌｌｕｒｇｙＭｏｒｉＧ．ＡｎｄＰａｓｃｈｅｎＰ．（ＤｅｐａｒｔｒｎｅｎｔｏｆＮｏｎｆｅｒｒｏｕｓＭｅｔａｌｌｕｒｇｙ，ＵｎｉｖｅｒｓｕｙｏｆＬｅｏｂｅｎ，Ｆｒａｎｚ－Ｊ...

简介：Puretungsten（PW）andW-1wt%La2O3（WL10）werepreparedbypowdermetallurgicalroutefollowedbytheswaging+rollingprocess.Thelogarithmicstrainsare0,0.37,0.58,and0.98forWL10and0,0.58forPW.Heattreatmentswereperformedattemperaturesvariedfrom1,573to2,173Ktodeterminetherecrystallizationtemperature.Recrystallizationtemperaturesare1,973and2,173KforWL1（logarithmicstrainof0.37）andWL3（logarithmicstrainof0.98）,respectively.ButinthecaseofWL2（logarithmicstrainof0.58）,fullrecrystallizationisnotachievedattemperatureofabove2,173K.Furthermore,therecrystallizationtemperatureofPWwithlogarithmicstrainof0.58isatleast300KlowerthanthatoftheequivalentWL10sample.Moreover,theincreaseofrecrystallizationtemperatureinhibitsthestrengthdegradationofWL2:sampleslose4%and22%strengthwhenannealedat1,573and1,973Kcomparedwithroomtemperature（RT）sample.Finally,thetextureevolutionfortheswaged+rolledWL10issignificantlyrelatedtothedeformationdegree:thedominatedorientationis<001>forWL2while<110>forWL3.

简介：在这研究，听电影的二种类型被准备，一使用用多弧离子小块地(MAIP)的有一个在里面飞机S过滤器的过滤cathodic弧血浆(大页书写纸)技术，和其它，和两个在一样的参数下面扔了。质地，坚硬，粗糙，tribological和听电影的二种类型的电气化学的腐蚀行为的比较被给。FCAP技术获得的听电影被发现高度一致、光滑、macroparticle免费。听电影由有的大页书写纸扔了一(111)比较喜欢取向，当有时，在这些电影的质地都没由MAIP扔。在低负担下面，二种听涂层有很不同穿机制；有的大页书写纸的电影一更低与MAIP技术扔的听电影相比穿率和磨擦系数。大页书写纸的听电影的稠密、没有洞的结构能有效地在腐蚀测试期间从底层避免听电影的雪崩。

简介：Thegrainsizecontrolofthetungstenpowderisessentialforhighqualitytungstenproductsmaking.Basedonthestudiesonthehydrogenreductionprocessoftungstenoxide,amicrocomputersystemisintroducedtothereductionprocessparameterscon-trol.Themicrocomputerprocesscontrolsystem,whichisnowrunninginZhuzhouTungstenandMolybdenumMaterialsPlant,controlstheprocessparametersincludingthetemperatureofthereductionfurnaceandthepressureofhydrogen.Italsocontrolsamechanicalpusherwhichpushstheboatschargedwithbluetungstenoxideintothefurnacetubes.Someofthetechniqueprob-lemsappearedinthereductionprocessandtheprocesscontrolareanalysedinthispaper.Theresultoftheexperimentisalsogiven.

简介：Zinctinoxide(ZTO)thinfilms,withzincacetateandtributyltinchlorideasrawmaterials,weredepositedonglasssubstratesbythemethodofmetalorganicchemicalvapordeposition(MOCVD).Thecrystallization,microstructureandopticalpropertieswereinvestigatedbyscanningelectronicmicroscope(SEM),X-raydiffraction(XRD)andultraviolet-visible(UV-Vis)spectrophotometer.TheresultsshowthatwiththeincreaseinSn/Znratio,thecrystalchangesfromwurtzitetorutilephase.Whentheratioreaches11:18,theintensityofZn_2SnO_4peaksappearstobethestrongestandtheopticalbandgapisabout3.27eV.Calculatedbytheenvelopemethod,thethicknessoftheZTOthinfilmsis713.24nm.MeasuredbyUV-Visspectrophotometer,thetransmittanceoftheZTOthinfilmsreachesupto80%inthewavelengthrangeof400-1000nmwhentheSn/Znratiois7:18.

简介：ＥｌｅｃｔｒｏｃｒｙｓｔａｌｌｉｚａｔｉｏｎＭｅｃｈａｎｉｓｍｏｆＴｕｎｇｓｔｅｎｉｎＭｏｌｔｅｎＫＦ－Ｂ＿２Ｏ＿３－Ｋ＿２ＷＯ＿４ＷｅｎＺｈｅｎｈｕａｎａｎｄＬｉＧｕｏｘｕｎ文振环，李国勋（ＧｅｎｅｒａｌＲｅｓｅａｒｃｈＩｎｓｔｉｉｕｔｅｆｏｒＮｏ...

简介：93W-4Ni-2Co-1Fe的微观结构和性质(集体部分，%)重合金由机械alloying和电流准备了的钨从混合元素的粉末激活sintering被调查。在15hmilling以后，在粉末的平均W谷物尺寸被减少到120nm。为为15h，密度，坚硬和横向的破裂的粉末milled，仅仅由集中的脉搏电流的合金sintered的力量是最大值。当全部的sintering时间保持不变时，sintered合金的性质能被优化脉搏水流的sintering时间显然改进并且经常水流。体积有大约340nm的一种平均W谷物尺寸的极其细小的合金能被在全部的sintering的15工厂h的粉末6min预定的sintering获得。相应sintered密度，坚硬和横向的破裂力量分别地到达16.78g/cm3，HRA84.3和968MPa。

简介：InorganicbufferlayerssuchasSiO2orTiO2andtransparentconductiveindium-tin-oxide(ITO)filmswerepreparedonpolyethyleneterephthalate(PET)substratesbyionassisteddeposition(IAD)atroomtemperature,andtheeffectsofSiO2andTiO2onthebendingresistanceperformanceofflexibleITOfilmswereinvestigated.TheresultsshowthatITOfilmswithSiO2orTiO2bufferlayerhavebetterresistancestabilitiescomparedtooneswithoutthebufferlayerwhentheITOfilmsareinwardsbentatabendingradiusmorethan1.2cmandwhentheITOfilmsareoutwardsbentatabendingradiusfrom0.8cmto1.2cm.ITOfilmswithSiO2bufferlayerhavebetterresistancestabilitiescomparedtooneswithTiO2bufferlayeraftertheITOfilmsarebentseveralhundredsofcyclesatthesamebendingradius,fortheadhesionofSiO2isstrongerthanthatofTiO2.ThecompressivestressresultedfrominwardbendingleadstotheformationofmoredefectsintheITOfilmscomparedwiththetensilestressarisingfromoutwardbending.SiO2andTiO2bufferlayerscaneffectivelyimprovethecrystallinityofITOfilmsin(400),(440)directions.

简介：通过采集153个样品分析长沙市土壤中As、Cd、Cr、Cu、Hg、Mn、Ni、Pb和Zn的含量,利用多元统计、地学统计、直接暴露以及不规则三角网模型（TIN模型）等方法分析土壤中重金属的来源、空间分布以及对儿童的健康风险。结果表明：长沙地区部分区域需经过污染治理后才适合人类生活;约9.0%的区域风险值超过了临界值1.0,1.9%的区域风险值大于2.0,其中高风险主要集中在南部和西部地区;元素As和口腔摄入途径是儿童的主要健康风险来源;土壤重金属的直接暴露对儿童所产生的健康风险应该受到研究者的重视。