AMORPHOUS ALLOY, MOLDING DIE AND METHOD FOR PRODUCING OPTICAL ELEMENT

• Main Authors: MIDORIKAWA MASAKO, HATA SEIICHI, FUKUSHIMA HIROTAKA
• Format: Patent
• Language: English; Japanese
• Published: 14.04.2016
• Subjects: ALLOYS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; FERROUS OR NON-FERROUS ALLOYS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GLASS; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES; METALLURGY; MINERAL OR SLAG WOOL; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF ALLOYS OR NON-FERROUS METALS

PROBLEM TO BE SOLVED: To provide an amorphous alloy that is chemically stable and has high anticorrosiveness, and also has high hardness, and a molding die prepared with the amorphous alloy and an optical element producing method using the amorphous alloy.SOLUTION: An amorphous alloy comprises Nb, W and Ni, where the content of Nb is 7.5 at% or more and 52.9 at% or less, the content of W is 16.4 at% or more and 47.0 at% or less, and the content of Ni is 22.0 at% or more and 53.3 at% or less.SELECTED DRAWING: Figure 1 【課題】 化学的に安定で耐腐食性が高く、且つ高い硬度を有するアモルファス合金、それを用いた成形用型および光学素子の製造方法を提供する。【解決手段】 Ｎｂ、Ｗ及びＮｉを含有するアモルファス合金であり、該アモルファス合金は、Ｎｂの含有量が７．５ａｔ％以上５２．９ａｔ％以下であり、Ｗの含有量が１６．４ａｔ％以上４７．０ａｔ％以下である、Ｎｉの含有量が２２．０ａｔ％以上５３．３ａｔ％以下であることを特徴とするアモルファス合金。【選択図】 図１