in this dissertation, solid state reaction method at room temperature was firstly used to coat gd2o3 : eu3 + particles with nano-silica coatings 本文首次采用室溫固相法在gd2o3:eu顆粒表面包覆了一層納米sio2保護(hù)層,增加了其穩(wěn)定性。
traditionally, the thermoelectric oxides can be prepared by solid state reaction method, but the whole process usually needs very long time, and it is easy to make the reactants become impure and inhomogenous during preparing the samples 氧化物熱電材料的傳統(tǒng)制備方法是固相反應(yīng)法,該方法耗時(shí),球磨時(shí)易引入雜質(zhì),而且混合不均勻,不利于燒結(jié),難以獲得性能優(yōu)良的熱電材料。
(y, gd ) bo3 : eu3 + was the red phosphors for pdp, which had poor color purity . in this dissertation, solid state reaction method at room temperature was firstly used for coating the ( y, gd ) bo3 : eu3 + particles with hematite . the thickness of uniform hematite coating is about 10nm (y,gd)bo3:eu3+作為pdp用熒光粉的紅粉材料存在色純度差的弱點(diǎn),為了提高其色純度,本文首次采用室溫固相法在微米級(jí)(y,gd)bo3:eu3+顆粒表面包覆一層10nm左右的均勻的氧化鐵的包覆層。