Laser sintering of transparent Ta2O5 dielectric ceramics

Consolidation phenomena in laser and powder-bed based layered manufacturing

“…Selective laser consolidation of ceramic powders has already been investigated for various materials and various applications: e.g. micro SLS of SiC powder [154,187], sintering of transparent Ta 2 O 5 dielectric ceramics [78,79], production of SiO 2 investment casting shells [88], production of biocompatible medical implants [50,115,160,202,213], SLS of bismuth titanate ceramics [131], SLS of radiation detectors using bismuth titanate (Bi 4 Ti 3 O 12 ) ferroelectric ceramics [130] and bismuth germanate ceramics (Bi 4 Ge 3 O 12 ) [129] etc. Other examples are given below.…”

Controlled Synthesis of Layered Rare‐Earth Hydroxide Nanosheets Leading to Highly Transparent (Y0.95Eu0.05)2O3 Ceramics

“…Compared with HP and HIP, pressureless sintering (vacuum/atmosphere‐controlled sintering) is cost effective and time efficient but requires sinterable powders . Other sintering techniques have been developed to produce transparent ceramics and have their respective advantages, including spark plasma sintering, laser sintering, microwave sintering and millimeter‐wave sintering, but may find difficulties in fabricating thick bulk of high transmittance in the visible region. Huang et al .…”

Influence of rising rate of power during laser sintering Ba<inf>0.5</inf>Sr<inf>1.5</inf>Na<inf>0.6</inf>K<inf>0.4</inf>Nb<inf>5</inf>O<inf>15</inf> ceramics

“…The laser sintering process employed a continuous CO 2 laser (Rofin slab) as the heating source. The TEM 00 mode laser beam (wavelength of 10.6 m) was fixed onto the center of the sample with a diameter of 8±1 mm during sintering process [7]. The geometry of laser irradiation on a ceramic sample is schematically shown in Fig.…”

“…By laser sintering, the physical properties of functional ceramics may be improved significantly due to the appearance of some nonequilibrium phases [7]. Since polycrystalline ceramics have many advantages over single crystals, such as low cost, ease of fabrication, and large size, we prepared dense lead-free Ba 0.5 Sr 1.5 Na 0.6 K 0.4 Nb 5 O 15 (BSKNN) ceramics by CO 2 laser sintering and reported our recent study on the influence of technical parameters of laser sintered ceramics and the temperature field analysis.…”