Invention Grant
US07615094B2 Tungsten-based sintered material having high strength and high hardness, and hot press mold used for optical glass lenses
失效
具有高强度和高硬度的钨基烧结材料和用于光学玻璃透镜的热压模具
- Patent Title: Tungsten-based sintered material having high strength and high hardness, and hot press mold used for optical glass lenses
- Patent Title (中): 具有高强度和高硬度的钨基烧结材料和用于光学玻璃透镜的热压模具
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Application No.: US10598585Application Date: 2004-07-13
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Publication No.: US07615094B2Publication Date: 2009-11-10
- Inventor: Ji-bin Yang , Masato Otsuki
- Applicant: Ji-bin Yang , Masato Otsuki
- Applicant Address: JP Shizuoka-Ken
- Assignee: Mitsubishi Materials C.M.I. Corporation
- Current Assignee: Mitsubishi Materials C.M.I. Corporation
- Current Assignee Address: JP Shizuoka-Ken
- Agency: Darby & Darby P.C.
- Priority: JP2004-062251 20040305; JP2004-070278 20040312; JP2004-076757 20040317
- International Application: PCT/JP2004/010278 WO 20040713
- International Announcement: WO2005/085486 WO 20050915
- Main IPC: B22F3/00
- IPC: B22F3/00
Abstract:
A first tungsten-based sintered material of the present invention comprises Ni in a range from 0.2 to 1.5% by mass, Y2O3 in a range from 0.1 to 1% by mass, and optionally, (a) VC in a range from 0.05 to 0.5% by mass and/or (b) Co and/or Fe in a range from 0.01 to 5% by mass, the balance being tungsten (W); W phases are sinter-bonded; Ni phase or Ni—Co/Fe alloy phase which has the largest particle diameter of 5 μm or less and Y2O3 having the largest particle diameter of 5 μm or less are distributed at boundaries of the W phases; and the largest particle diameter of the W phase is 30 μm or less. The first tungsten-based sintered material is preferably used for a hot press mold for optical glass lenses.
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