Fabrikasi Kaca Tellurite Zinc Bismuth Dengan Teknik Melt Quenching

Wahyudi Wahyudi; Lia Angraeni

doi:10.20527/bipf.v6i2.4910

Fabrikasi Kaca Tellurite Zinc Bismuth Dengan Teknik Melt Quenching

Wahyudi Wahyudi, Lia Angraeni

Abstract

Penelitian ini betujuan untuk memfabrikasi kaca Tellurite Zinc Bismuth (TZB) denga teknik melt quenching dan mendeskripsikan mengenai kondisi fisika (warna dan transparansi) kaca TZB. Bahan kaca yang digunakan dalam penelitian ini yakni serbuk Tellurite Oxide (TeO₂) dengan kemurnian 99,99%, serbuk Zinc Oxide (ZnO) dengan kemurnian 99,9%, dan serbuk Bismut Oxide (Bi₂O₃) dengan kemurnian 99,9%. Komposisi yang digunakan adalah (80-x)TeO₂-20ZnO-xBi₂O₃ dengan x=8,12,16 (mol%). Tahapan penelitian meliputi penyiapan alat dan bahan, pembuatan sampel dan karakterisasi sampel. Bahan dilebur di dalam furnace CARBOLITE^TM pada suhu 900^oC selama 1 jam kemudian dituang ke dalam mold (cetakan) berukuran (3,5x2,5x0,5) cm yang telah dipanaskan pada suhu 300^oC dan didinginkan secara natural cooling. Kaca TZB hasil fabrikasi seperti tampak transparan. Semua sampel kaca yang terbentuk berwarna kuning kehijauan (lime). Perlu dilakukan analisis lebih lanjut berupa UV-VIS untuk menentukan secara pasti pengaruh konsentrasi Bi₂O₃ sifat optis kaca TZB yang telah difabrikasi.

This research aims to fabricate Tellurite Zinc Bismuth (TZB) glass with melt quenching technique and to describe the physical condition (color and transparency) of TZB glass. The glass materials used in this research are Tellurite Oxide (TeO₂) powder with 99.99% purity, 99.9% powder of Zinc Oxide (ZnO), and Bismuth Oxide (Bi₂O₃) powder with 99.9% purity. The composition used is (80-x) TeO₂-20ZnO-xBi₂O₃ with x = 8.12,16 (mol%). Research stages include preparation of tools and materials, sample preparation and sample characterization. The material is melted in a CARBOLITE^TM furnace at 900°C for 1 hour then poured into a mold (sized) size (3.5x2.5x0.5) cm which has been heated at a temperature of 300^oC and cooled by natural cooling. TZB glass fabrication results as it looks transparent. All glass samples are formed in greenish yellow (lime). Further analysis of UV-VIS is necessary to determine the exact effect of Bi₂O₃ concentration of the fabricated optical properties of glass TZB.

Keywords

Kaca, Tellurite, TZB, Melt Squenching.

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DOI: http://dx.doi.org/10.20527/bipf.v6i2.4910