New long phosphorescent phosphors Ba1-xCaxAl2O4∶Eu2+, Dy3+ with tunable color emission were prepared and studied. The emission spectra show that the tuning ran
There are at least three obvious trends in the developments of automotive market in China: the evolution of emission standards from Euro Ⅱ to Euro Ⅲ, the dema
During the solidification of the AZ91D-alloys, the Al8(Mn, Fe)5 phase is generally precipitated in the melt in advance of the precipitation of the primary α-Mg
(Y, Gd)Al3(BO3)4∶Eu3+ samples were prepared by the conventional solid state reaction. The XRD results indicate that the crystal symmetry is low. The excitation