BaO-B_2O_3-SiO_2, PbO-SiO_2, PbO-B_2O_3 系ガラスのポリシング速度

概要

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BaO-B_2O_3-SiO_2, PbO-SiO_2 and PbO-B_2O_3 glasses were polished using a pitch polisher and cerium oxide dispersed in distilled water. The factors affecting the polishing rate at initial stage were discussed in terms of glass properties: Vickers microhardness, chemical water durability and bulk modulus. The polishing rate of BaO-B_2O_3-SiO_2 glasses depends mainly on the hardness of the hydrated layer formed; this factor is consistent with Izumitani proposal. The polishing rates of PbO-SiO_2 and PbO-B_2O_3 glasses increase with increasing PbO content up to 50 mol% PbO and then decrease remarkably. The polishing rates of PbO-SiO_2 and PbO-B_2O_3 glasses are apparently affected by the bulk modulus which is related to the product of the ratio of plastic strain to elastic strain (c/a) and the indentation hardness H using Hill's theory on plastic-elastic materials.
社団法人日本セラミックス協会の論文
1997-01-01