HEAT-RESISTANT Ir ALLOY WIRE

To provide an Ir alloy wire which has improved oxidative wear resistance while ensuring Vickers hardness.SOLUTION: The Ir alloy wire includes: 5 mass % to 30 mass % of Rh; and 0.5 mass% to 5 mass% of Ta, satisfying 1≤A<6 where A means the average value of the aspect ratio (crystal grain length/cr...

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Main Authors YOKOTA SHUNSUKE, TERAI KENTA, YASUHARA HAYATO, ANDO IKUYA, AKIYOSHI RYOHEI, HASHINASHI KEN
Format Patent
LanguageEnglish
Japanese
Published 09.06.2022
Subjects
ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:To provide an Ir alloy wire which has improved oxidative wear resistance while ensuring Vickers hardness.SOLUTION: The Ir alloy wire includes: 5 mass % to 30 mass % of Rh; and 0.5 mass% to 5 mass% of Ta, satisfying 1≤A<6 where A means the average value of the aspect ratio (crystal grain length/crystal grain width) of the alloy wire structure within 0.05 mm or less in depth from the surface of the alloy wire.SELECTED DRAWING: Figure 1 【課題】ビッカース硬さを確保しつつ、耐酸化消耗性を更に向上させるＩｒ合金線を提供する。【解決手段】Ｒｈを５～３０ｍａｓｓ％、Ｔａを０．５～５ｍａｓｓ％含有するＩｒ合金線であって、前記合金線の表面から深さ０．０５ｍｍ以内の範囲における前記合金線組織のアスペクト比（結晶粒長さ／結晶粒幅）の平均値Ａが１≦Ａ＜６である、ことを特徴とするＩｒ合金線。【選択図】図１
Bibliography:Application Number: JP20200197747