简介:WeinvestigatereactivefluorineatomspectroscopiccharacterizationinatmosphericpressureofHe/SF6plasmausingatomicemissionspectrometry.Asinputradiofrequency(RF)powerlevelsareraisedfrom140to220W,theemissionspectraof685.60(3p4D→3s4Ptransition)and739.87nm(3p4P→3s4Ptransition)increasesignificantly.Moreover,anoptimalvalueofSF6volumeconcentrationintheproductionoffluorineradicals,whichis0.8%isachieved.AdditionofcertainamountsofO2intoHe/SF6plasmaresultsinthepromotionofSF6dissociation.EmissionintensitiesoffluorineatomsshowthemaximumattheO2/SF6ratioof0.4.
简介:MonovalentionsLi+,Na+,andK+,aschargecompensators,areintroducedintoCaYAl3O7:M(M=Eu3+,Ce3+)inthisletter.TheircrystalphasesandphotoluminescencepropertiesofdifferentalkalimetalionsdopedinCaYAl3O7areinvestigated.Inaddition,theinfluenceofchargecompensationionLi+whichhasamoreobviousroleinimprovingluminescenceintensityonCaYAl3O7:Eu3+phosphorisintentionallydiscussedindetailandapossiblemechanismofchargecompensationisgiven.Theenhancementofredemissioncenteredat618nmbelongingtoEu3+isachievedbyaddingalkalimetalionLi+under393-nmexcitation.
简介:一汽集团积极响应国家战略和法规要求,成功获批工信部新能源车开发项目,重点研发推广离合器耦合式电机总成(CCM)。离合器耦合式电机总成为“P2”构型,该构型技术门槛高、开发难度大,离合器耦合式电机总成集成双质量飞轮、分离离合器和驱动电机,集成化程度高,结构紧凑,其中双质量飞轮和分离离合器为二次开发,驱动电机总成为自主开发。CCM已成功搭载红旗H7PHEV车型,并于2016年投放市场,市场反馈良好。