Fast fabrication of AlON ceramics with ultra-high transmittance by the assistance of hot isostatic pressing treatment

Synthesis and spectroscopic properties of aluminum oxynitride doped with 3d-metal ions: the case of γ-AlON:Co

“…All spectra show a sharp edge in the fundamental absorption region below 230 nm and an absorption band with a maximum at 255 nm. The band near 255 nm has been occasionally observed in AlON [43][44][45][46], but its nature is poorly described. It was also found in the absorption spectra of AlON:Ti [33].…”

Study on robust additive of CaCO3 for fast fabrication of highly transparent AlON ceramics by pressureless sintering

“…Jiang et al 16 . used AlON powder having an average particle size of about 1.3 μm, with 0.4 wt.% Y 2 O 3 and 0.25 wt.% MgO as sintering additives, and the obtained AlON ceramics showed the maximum transmittance of 86.1% at 2000 nm by PS at 1800°C for 6 h and HIP at 1825°C for 3 h. In the previous work, 19 using AlON powder of median particle size ( D 50 ) 2.0 μm and 0.5 wt.% Y 2 O 3 , AlON ceramics with the maximum transmittance up to 88.7% at ∼3600 nm were pressureless sintered at 1880°C for 2.5 h followed by HIP at 1850°C for 2 h.…”

“…[1][2][3][4][5] AlON ceramics can be fabricated by consolidation of AlON powder or solid reaction of Al 2 O 3 /AlN. [6][7][8][9][10] Currently, most of AlON ceramics were prepared by consolidation of AlON powder by different sintering techniques, such as pressureless sintering (PS), [11][12][13][14] PS combined with hot isostatic pressing (HIP), [15][16][17][18][19] hot pressing, 20 and spark plasma sintering. 21,22 Among them, PS is the most favorite way for its low cost and feasibility in practice.…”

“…25 With the help of HIP, the transparency of the obtained AlON ceramics was further improved. 16,19,26 Chen et al 26 F I G U R E 1 X-ray diffractometry (XRD) pattern of AlON powder (A) and particle size distribution (B and C), scanning electron microscopy (SEM) images of P0.6 (D), P0.9 (E), and P1.1 (F) of the milled AlON powders. used 0.08 wt.% Y 2 O 3 and 0.02 wt.% La 2 O 3 as sintering additive to dope in AlON powder of average particle size 0.5 μm.…”

“…With the help of HIP, the transparency of the obtained AlON ceramics was further improved 16,19,26 . Chen et al 26 .…”