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°®ÓëÓêÏÂ: ½ð±Ò+2 2012-05-31 19:52:36
xy1986505: ½ð±Ò+50, ·­ÒëEPI+1 2012-06-01 21:49:49
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¡¾Òë¡¿The mechanism of broaden sintering temperature range is the added B2O3 in the melt can be shaped as boron-oxygen tetrahedron [BO4] with three-dimensional space connection function, which reduces the number of non-bridging oxygen ions in the melt, and plays the role of mending nets. With boron in, the network structure of the melt clustered tightly and the viscosity increased, here in addition to the original silicon-oxygen tetrahedral network and the aluminum-oxygen tetrahedron network in the melt structure, the boron-oxygen tetrahedron network, boron silicate Network, boron-aluminum-oxygen tetrahedron network and the other containing boron tetrahedral network structure were formed, so the melt in andalusite-based ceramic has higher temperature viscosity, which improved the ability to resist high temperature deformation of porcelain bodies. When the temperature rises, the viscosity reduction is fairly gentle. Therefore, andalusite-based ceramic sintering temperature range should be broaden from 20¡ãC to 40¡ãC.
I just want to live while I am alive
2Â¥2012-05-31 15:46:39
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3Â¥2012-06-01 08:49:45
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Broaden the mechanism of sintering temperature range is added B2O3 in the melt can be formed with three-dimensional space to connect the role of the boron-oxygen tetrahedron [BO4, to reduce the number of the melt of non-bridging oxygen ions, plays the role of mending their nets.Of boron in the network structure of the melt of the tightly clustered, the viscosity increased, when the melt structure in addition to the original tetrahedral network of silicon-oxygen and aluminum-oxygen tetrahedron network, but also the formation of a boron-oxygen tetrahedron network, boronoxygen tetrahedral network of silicon-oxygen tetrahedron network, boron-aluminum and boron tetrahedral network structure.Andalusite based ceramic melt high temperature viscosity, improved ability to resist high temperature deformation of ceramic blanks, and rise when the temperature is high, the viscosity reduction is more gentle. Broaden andalusite based ceramic sintering temperature range from 20 ¡ã C to 40 ¡ã C
4Â¥2012-06-01 09:01:10
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