简介：NickeliscommonlycoatedontheouterleadsforT8metalpackage.Theleadselectrodepositedbyconventionaldullorbrightnickelover5μmatdirectcurrentfromWattbatharehardtopassthebendfatiguetestforthreetimes.Nickelelectrodepositedatmultiwaveformcurrentincludingdirectcurrent,singleanddoublepulsefromsulfamatebathcanimprovethebendfatiguestrengthofleads.Suchnickelplatinghasamultilayerstructure,itsmorphologyofsublayerscanbeclearlyseeninitscrosssectionwithSEM.Theelectrochemicalstudyshowsthatthesesublayershavedifferentcorrosionpotentials.ThebendfatiguetestofleadswithsuchplatingforT8metalpackageshowsthatthenumberofbendincreaseswiththedecreaseofaveragecurrentdensityofmultiwaveform,whichcanbeattributedtothereductionofeverysublayerthicknessandtheincreaseoflayernumbersunderthesameconditionoftotalthickness.

简介：Theeffectsofisothermalholdingprocessonthemicrostructureevolutionofsemi-solid7075strengthaluminumalloyproducedbytherecrystallisationandpartialremelting(RAP)processwereinvestigated.Tensilemechanicalpropertiesofas-receivedandthixoformedalloysatroomtemperaturewereexamined.Theresultsshowthatthemicrostructureofas-receivedalloyexhibitsremarkableorientationalongthedeformationdirection.Withtheincreaseofisothermalholdingtime,thesolidparticlegrainsizecontinuouslyincreasesandthedegreeofspheroidizationalsoimproves.Coalescencemechanismisdominantwhenreheatedat595°CandOstwaldripeningmechanismisdominantwhenreheatedat615°Cinthesemi-solidstate.Alowercoarseningrateisobservedfor615°C(coarseningrateK=391μm3s-1)comparedwiththecoarseningratefor595°C(coarseningrateK=501μm3s-1).TheRAP7075aluminumalloycanbesuccessfullythixoformedandthefillingofcomponentsisgoodafterthixoforming.Thethixoformedcomponentsexhibitfavoritemechanicalproperties.

简介：在连续的原文如此增强纤维的钛矩阵的界面的反应和钛矩阵微观结构合成被调查。在800由二件样品的比较激活?????吠????挠浯潰楳整吗？

简介：激光粉末免职被使用制作Ti-6.5Al-3.5Mo-1.5Zr-0.3Si(wt%)/Ti-47Al-2Cr-2Nb-0.2W-0.15B(at%)双性人材料系统。当同样扔的-TiAl合金由组成时，同样扔的TC11合金显示出basket-wave-like形态学充分2/薄片状的微观结构。在处理期间考虑在TC11和-TiAl之间的热失配，接口微观结构进化被担心。转变小径被说明。艾尔元素和-stabilizers瞬间，Cr，和Nb的内容变化为在接口的微观结构的进化负责，这被发现。破裂表面在-TiAl方面被定位。双性人材料显示出一种易碎破裂的方式，与560的最终的张力的力量?MPa。