高純度ジルコン焼結体の溶融アルカリガラスに対する反応性  [in Japanese] Reactivity of High-Purity ZrSiO_4 Sintered Bodies for Alkaline Glass Melts  [in Japanese]

rights: 社団法人日本セラミックス協会rights: 本文データは学協会の許諾に基づきCiNiiから複製したものであるrelation: IsVersionOf: http://ci.nii.ac.jp/naid/110002290168/An experiment was conducted with reactivity of ZrSiO_4 sintered bodies fabricated from synthesized high-purity ZrSiO_4 powders for alkaline glass (2Na_2O・SiO_2) melts and change of their microstructure at 900°-1400℃. As evaluation of corrosion, comparison of the change of the weight loss and the corrosion depth of the ZrSiO_4 sintered bodies with high-purity was made with zirconsand sintered bodies and ZrSiO_4 sintered bodies with which treatment was performed by means of HIP. The corrosion reaction of three kinds of sintered bodies was liable to be governed by the melterosion mechanism, and it was known that the corrosion rate was dependent upon both purity and density of the ZrSiO_4 sintered bodies. From the result of the comparison of TZP bodies with mullite sintered bodies, it was explained that the TZP bodies were corroded very hard. With respect to the mullite sintered bodies, 2Na_2O ・ SiO_2 melts severely dissolved them. It was ascertained that it was very important to heighten the density of the ZrSiO4 sintered bodies and to lower the reactivity with 2Na_2O ・ SiO_2 melts in order to heighten the stability in the 2Na_2O ・ SiO_2 melts. It was ascertained that it was likewise very important to heighten the stability of the ZrSiO_4 at high temperatures by augmenting the purity of the ZrSiO_4.

An experiment was conducted with reactivity of ZrSiO_4 sintered bodies fabricated from synthesized high-purity ZrSiO_4 powders for alkaline glass (2Na_2O・SiO_2) melts and change of their microstructure at 900°-1400℃. As evaluation of corrosion, comparison of the change of the weight loss and the corrosion depth of the ZrSiO_4 sintered bodies with high-purity was made with zirconsand sintered bodies and ZrSiO_4 sintered bodies with which treatment was performed by means of HIP. The corrosion reaction of three kinds of sintered bodies was liable to be governed by the melterosion mechanism, and it was known that the corrosion rate was dependent upon both purity and density of the ZrSiO_4 sintered bodies. From the result of the comparison of TZP bodies with mullite sintered bodies, it was explained that the TZP bodies were corroded very hard. With respect to the mullite sintered bodies, 2Na_2O ・ SiO_2 melts severely dissolved them. It was ascertained that it was very important to heighten the density of the ZrSiO4 sintered bodies and to lower the reactivity with 2Na_2O ・ SiO_2 melts in order to heighten the stability in the 2Na_2O ・ SiO_2 melts. It was ascertained that it was likewise very important to heighten the stability of the ZrSiO_4 at high temperatures by augmenting the purity of the ZrSiO_4.