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

简介：InordertocontrolthesizeanddistributionofthehighconductiveFe2PinLiFePO4/Fe2Pcomposite,twodifferentcoolingrates(Fast:15℃·min-1,Slow:2℃·min-1)wereemployedaftermechanicalalloying.Thedischargecapacityofthefastcooledwas83mAh·g-1andtheslowcooled121mAh·g-1.TheparticlesizeofthesynthesizedpowderwasexaminedbytransmissionelectronmicroscopyanddistributionofFe2Pwascharacterizedusingscanningelectronmicroscopy(SEM).Inaddition,two-stepheattreatmentwascarriedoutforbetterdistributionofFe2P.X-raydiffraction(XRD)andRietveldrefinementrevealthatLiFePO4/Fe2Pcompositeconsistsof95.77%LiFePO4and4.33%ofFe2P.