Combinatorial Search for a New Amorphous Alloy as Mold Material for Glass Molding

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  • ガラスレンズ成形金型材料用アモルファス合金のコンビナトリアル探索
  • ガラスレンズ成形金型材料用アモルファス合金のコンビナトリアル探索--結晶化開始温度,機械特性の評価
  • ガラス レンズ セイケイ カナガタ ザイリョウヨウ アモルファス ゴウキン ノ コンビナトリアル タンサク ケッショウカ カイシ オンド キカイ トクセイ ノ ヒョウカ
  • Combinatorial search for a new amorphous alloys as mold materials for glass molding. Evaluation of crystallization temperature and mechanical property
  • －結晶化開始温度，機械特性の評価－
  • - Evaluation of Crystallization Temperature and Mechanical Property -

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Abstract

New compositions of a Pt-Zr-Ni amorphous alloy as a mold material for glass lens production were searched using a new combinatorial synthesis called the combinatorial arc plasma deposition (CAPD). First, 3,267 thin film samples of 1 mm x 1 mm size were deposited by CAPD. The phase and composition of 883 samples of the thickness more than 500 nm were evaluated and 312 amorphous samples were found. Secondly, six amorphous samples expected to have a high crystallization temperature (Tx) and a high tensile strength (σB) were deposited using a sputtering system because CAPD samples were too small and thin to evaluate mechanical property such as σB,Young's modulus, elastic limits and anti-sticking with melted glass. Finally, Pt50Zr36Ni14 was found as a new mold material of a high Tx (985 K), a high σB (2.12 GPa) and anti-sticking. The new mold material was also expected to have a high resistance to oxidation at a high temperature range of glass molding.

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