. "Processing and properties of fine-grained transparent MgAl2O4 ceramics"@en . "3"^^ . . "Maca, Karel" . "2" . "spinel ceramics, sintering, hot-isostatic pressing, microstructure, optical properties"@en . "Trunec, Martin" . . "26210" . "3"^^ . "Chmel\u00EDk, Radim" . . . "RIV/00216305:26210/07:PU64719!RIV11-MSM-26210___" . . "4"^^ . . . "RIV/00216305:26210/07:PU64719" . . "Processing and properties of fine-grained transparent MgAl2O4 ceramics" . . . "51" . . "444915" . . . "000249498400005" . . "[5D218FDB1B6C]" . "Transparent fine-grained MgAl2O4 ceramics was prepared from nanometre-sized powder without any sintering additives. Ceramic green bodies were prepared by cold isostatic pressing and then pressureless presintered at temperatures of 1550-1600degC to reach closed porosity. Presintered samples were subsequently hot isostatically pressed (HIPed) at 1500degC and 200 MPa for 1 hour. The final density as well as the transparency of HIPed samples was affected by presintering densities. The highest final density (~100% t.d.) and highest in-line transmission (60.2% for sample thickness 1.1mm and = 632.8 nm) were obtained for sample presintered to the lowest density value still guaranteeing the structure with closed porosity (~94% t.d.). The HIPed sample had an average grain size of 1 micron and hardness HV=13.0 GPa."@en . . . "Processing and properties of fine-grained transparent MgAl2O4 ceramics"@en . "0862-5468" . "Z(MSM0021630508)" . . "Ceramics-Silik\u00E1ty" . "CZ - \u010Cesk\u00E1 republika" . "Transparent fine-grained MgAl2O4 ceramics was prepared from nanometre-sized powder without any sintering additives. Ceramic green bodies were prepared by cold isostatic pressing and then pressureless presintered at temperatures of 1550-1600degC to reach closed porosity. Presintered samples were subsequently hot isostatically pressed (HIPed) at 1500degC and 200 MPa for 1 hour. The final density as well as the transparency of HIPed samples was affected by presintering densities. The highest final density (~100% t.d.) and highest in-line transmission (60.2% for sample thickness 1.1mm and = 632.8 nm) were obtained for sample presintered to the lowest density value still guaranteeing the structure with closed porosity (~94% t.d.). The HIPed sample had an average grain size of 1 micron and hardness HV=13.0 GPa." . "Processing and properties of fine-grained transparent MgAl2O4 ceramics" . .