TiN基焼結体の色調に及ぼす添加物の効果 Effects of Additives on the Color Quality of TiN Based Ceramics
The effects of additives on the densification and color quality of TiN ceramics were studied. Some oxides (Al<SUB>2</SUB>O<SUB>3</SUB>, CaCO<SUB>3</SUB>, TiO<SUB>2</SUB>, Y<SUB>2</SUB>O<SUB>3</SUB>, ZrO<SUB>2</SUB>) as additives were prechecked by sintering, and we selected TiO<SUB>2</SUB> as an addition. TiN was densified by pressureless sintering at 1550° to 1850°C in N<SUB>2</SUB>. Samples with addition of 8wt% TiO<SUB>2</SUB> sintered at 1550°, 1700°, and 1850°C showed the relative densities of 97.7, 99.8, and 99.7%, respectively. The optical reflectivity of polished samples was similar to that of gold. Vicker's hardness of some sintered bodies reached about 16GPa. Therefore, polished sintered bodies can be used for ornament.
粉体および粉末冶金 44(12), 1095-1099, 1997-12-15
Japan Society of Powder and Powder Metallurgy