436 ガラス成形金型用Ptフリー非晶質合金のコンビナトリアル探索(複合機能化材料・デバイスとその加工プロセス)

概要

論文の詳細を見る
This paper reports the use of a novel Pt-free amorphous alloy as a material for a glass lens molding die with diffraction gratings. The properties required of the amorphous alloy are as follows: (a) the alloy must not exhibit crystallization or oxidization and must not adhere to glass, when a glass molds on the die of the amorphous alloy in air, (b) it must be able to ultra-precision machined by single-point diamond turning (SPDT); (c) it must have a tensile strength of greater than 1 GPa. We employed a combinatorial search using combinatorial arc plasma deposition to search for the amorphous alloy that satisfied the above criteria. Ni-Nb-Zr amorphous alloy was selected from the results of the combinatorial search. The Ni_<35>Nb_<40>Zr_<25> alloy satisfied all the above criteria and it was possible to fabricate a molding die by SPDT using it.
2009-11-06