Study on the effect and mechanism of zirconia on the sinterability of yttria transparent ceramic

Highly transparent ZrO2-doped (Ce,Gd)3Al3Ga2O12 ceramics prepared via oxygen sintering

“…As discussed above, the processing technologies are critical for the preparation of Ce:GAGG-based ceramic with high transparency. Recently, highly transparent sesquioxide, such as Y 2 O 3 [17][18][19] and Lu 2 O 3 [20] ceramics were prepared via ZrO 2 doping. What is more important, it was also reported by Nakamura that small amount of ZrO 2 doping could lead to higher fluorescence intensity for the Ce:GAGG-based ceramics [21].…”

Structural and optical properties of Tm:Y2O3 transparent ceramic with La2O3, ZrO2 as composite sintering aid

“…In group 2, the doping concentrations of Zr 4+ for all samples were fixed at 3 at.% and sintering temperatures were in the range of 1700-1800 • C. The Zr 4+ concentration and the temperatures we chose are empirical data and the details can be found in our previous papers. 14,16,17 For comparison, the co-doped samples have an additional La 3+ doping of 3 at.%. The SEM photographs of the eight samples are shown in Figs.…”

“…This indicated that the La 3+ ions enhanced the mobility of grain boundary while the Zr 4+ ions strongly suppressed the migration of grain boundary, coinciding with the published literatures. 14,17,19,[20][21][22][23] Considering the Y 2 O 3 structure with one fourth of anion sites vacant, 24 the O 2− ions diffuse much faster than Y 3+ ions. Moreover, as profoundly investigated, 23,25 the diffusion of Y 3+ interstitial is ascertained to be the controlling step of sintering process in Y 2 O 3 ceramic rather than Y 3+ vacancy.…”

High transparency Cr,Nd:LuAG ceramics prepared with MgO additive

“…Many types of sintering additives have been used to fabricate transparent ceramics using the vacuum sintering method [18][19][20][21][22][23][24][25][26]. High optical quality Cr,Nd:LuAG ceramics with transparency of 83.4% at 840 nm were claimed, which used TEOS and Sc 2 O 3 as sintering additives in our previous study [14].…”