简介：gamma-LiAlO2单身者水晶是有希望的底层为轧了heteroepitaxy.In这篇论文，我们在场由修改Czochralski的大尺寸的LiAlO2水晶的生长方法。水晶质量被高分辨率的X光检查衍射并且化学蚀刻描绘。结果证明成长得当的水晶在17.7-22.6弧秒的半最大值(FWHM)与完整的宽度有完美的质量并且蚀刻坑密度(0.3-2.2)x10~4cm~(在整个水晶boule的水晶boule.The底部的-2)显示出最好的质量。光传播系列从对水晶从0.2～5.5亩m是透明的并且完全变得在6.7亩m波长附近吸收的红外展览紫外。在近紫外的区域的光吸收边是大约191nm。

简介：Thedevelopmentofthermalanalysistechniquesforevaluationofcastalloymeltqualityanditscurrentapplicationsinthefoundrywerereviewed.Thecharacteristicsofthecurrentthermalanalysistechniqueswereanalyzed.Anewcomprehensivemethodforcoolingcurverecognitionhasbeenproposed.Theevaluationofcastalloymeltqualitywasrealized.

简介：Znbasedmetalshaveexhibitedpromisingprospectsasastructuralmaterialforbiodegradableapplications.PureZnporousscaffoldswereproducedbylaserpowderbedfusion(LPBF)basedondatafilesofdesigningandCTseanning.MassiveZnevaporationduringlasermeltinglargelyinfluencedtheformationqualityduringLPBFofZnmetal.Themetalvaporinprocessingchamberwasblownoffandsuctionedoutefficientlybyanoptimizedgascirculationsystem.Numericalanalysiswasusedtodesignandtestifytheperformanceofgasflow.Thesurfaceofscaffoldswascoveredwithnumerousparticlesindifferentsizes.Processingporesoccurredneartheoutlinecontourofstruts.Theaveragegrainsizeinwidthwas8.5μm,andthehardnesswas43.8HV.Chemicalpluselectrochemicalpolishingobtainedunifonnandsmoothsurfacewithoutprocessingpores,butthediameterofstrutsreducedto250μmfromthedesignvalue300μm.Thepoorsurfacequalityandprocessingporeswereresultedbythesplashingparticlesincludedspattersandpowdersduetotherecoilforceofevaporation,andthehorizontalmovementofliquidmetalduetooverheatingandwetting.TheinsufficientmeltingattheoutlinecontourcombinedwithgoodwettingofZnliquidmetalfurtherincreasedthesurfaceroughnessandprocessingpores.

简介：Electro-hydraulicimpulsewater-airmixingjetbywhichthequalityofmetalmaterialscanbeimprovedisdescribedinthispaper.Theexperimentalresultsprovedthatthehardnessandthemicro-hardnessofthesurfacelayerofmetalmaterialscanbeimprovedwiththismethod,forexample,themicrohardnessofCrWMncanbeincreasedby35.62percent.

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