PEMBUATAN KOMPOSISI GLASIR BEBAS LOGAM BERAT BARIUM DAN SENG DENGAN METODE OPTIMALISASI GLASIR MENGGUNAKAN MODEL OPTIMIZATION OF GLASS BATCH COMPOSITION (OGBC)
Abstract
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Firing behavior test has been carried out and physical properties of the glazes are calculated by using mathematical models describing the properties as additive functions of their oxide composition (OGBC model).. The calculation procedure of optimizing the glaze composition satisfying certain desired properties of the glaze. To Obtain properties of the glaze, mineralogical testing was caried out by AAS and spectrofotometry. The result of firing behavior which has given curve that need to determine level of temperature and OGBC model which has given properties range are used to determine a Good qualitity of glaze. Based on OGBC calculaton, Glaze made from barium oxide and zinc with composition are Felspar 39, Wollastonite 11 Kapur 5, Kaolin 6, Zirkon silikat 11, Dolomit 6, Kuarsa 13, ZnO 2, BaCO 3 2 (on percent weight), barium and zinc content can be reduced and give same quality.The final composition free barium and zinc are : Felspar 42, Wollastonite 12, kapur 5, Kaolin 6, Zirkon silikat 11, Dolomit 8, kuarsa 16, ZnO 0, BaCO 3 0 (on percent weight) Katakunci: Glasir, model OGBC, optimalisasi, sifat sifat glasir
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