GB2229859A - Roll surface cutting method - Google Patents

Roll surface cutting method

Info

Publication number
GB2229859A
GB2229859A GB8928848A GB8928848A GB2229859A GB 2229859 A GB2229859 A GB 2229859A GB 8928848 A GB8928848 A GB 8928848A GB 8928848 A GB8928848 A GB 8928848A GB 2229859 A GB2229859 A GB 2229859A
Authority
GB
United Kingdom
Prior art keywords
cutting method
roll surface
surface cutting
strength
gold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB8928848A
Other versions
GB8928848D0 (en
GB2229859B (en
Inventor
Yasuhide Ono
Yoshio Ozeki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Publication of GB8928848D0 publication Critical patent/GB8928848D0/en
Publication of GB2229859A publication Critical patent/GB2229859A/en
Application granted granted Critical
Publication of GB2229859B publication Critical patent/GB2229859B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
    • B23B5/08—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for turning axles, bars, rods, tubes, rolls, i.e. shaft-turning lathes, roll lathes; Centreless turning
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • H01B1/026—Alloys based on copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C5/00—Alloys based on noble metals
    • C22C5/02—Alloys based on gold
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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Wire Bonding (AREA)

Abstract

A bonding wire (3) for connecting an electrode of a semiconductor element to an external lead (2), which comprises 1 to less than 5 wt % of copper and the balance of gold and unavoidable impurities, and which has excellent break strength and bonding strength to provide reliable connection even in a thickness as small as about 10 mu m in diameter.
GB8928848A 1988-05-02 1989-12-21 Bonding wire for semiconductor elememt Expired - Fee Related GB2229859B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10958788 1988-05-02
PCT/JP1989/000463 WO1989011161A1 (en) 1988-05-02 1989-05-02 Bonding wire for semiconductor elements

Publications (3)

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GB8928848D0 GB8928848D0 (en) 1990-06-13
GB2229859A true GB2229859A (en) 1990-10-03
GB2229859B GB2229859B (en) 1993-01-06

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GB8928848A Expired - Fee Related GB2229859B (en) 1988-05-02 1989-12-21 Bonding wire for semiconductor elememt

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JP (1) JP2745065B2 (en)
KR (1) KR930001265B1 (en)
DE (1) DE3990432C1 (en)
GB (1) GB2229859B (en)
WO (1) WO1989011161A1 (en)

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JPH10233408A (en) * 1997-02-21 1998-09-02 Nec Corp Metal junction structure and semiconductor device
JP3426473B2 (en) * 1997-07-01 2003-07-14 新日本製鐵株式会社 Gold alloy wires for semiconductor devices
DE19740004A1 (en) * 1997-09-11 1998-11-19 Siemens Ag Bond wire for semiconductor device contact terminal
DE19753055B4 (en) * 1997-11-29 2005-09-15 W.C. Heraeus Gmbh Fine wire of a gold alloy, process for its preparation and its use

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JPS55127041A (en) * 1979-03-26 1980-10-01 Hitachi Ltd Resin-sealed semiconductor device
JPH0221201A (en) * 1988-08-25 1990-01-24 Amada Co Ltd Distance detector for processing machine

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US3769006A (en) * 1972-01-27 1973-10-30 Gold Refining W Co Bright cast alloy, and composition
JPS53112060A (en) * 1977-03-11 1978-09-30 Tanaka Electronics Ind Gold wire for bonding semiconductor
JPS5649534A (en) * 1979-09-28 1981-05-06 Tanaka Kikinzoku Kogyo Kk Bonding wire for semiconductor device
JPS5676556A (en) * 1979-11-28 1981-06-24 Tanaka Denshi Kogyo Kk Bonding gold wire for semiconductor element
DE3153395C2 (en) * 1981-02-12 1987-11-19 W.C. Heraeus Gmbh, 6450 Hanau, De Use of a very fine wire made of a copper/tin alloy
DD201156A1 (en) * 1981-10-02 1983-07-06 Daut Hans Heiner Precious metal alloys for micro-wire materials
US4490504A (en) * 1983-08-15 1984-12-25 General Electric Company Flame retardant non-dripping polycarbonate compositions
JPS6049534A (en) * 1983-08-26 1985-03-18 三菱電機株式会社 Circuit breaker
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JPS55127041A (en) * 1979-03-26 1980-10-01 Hitachi Ltd Resin-sealed semiconductor device
JPH0221201A (en) * 1988-08-25 1990-01-24 Amada Co Ltd Distance detector for processing machine

Also Published As

Publication number Publication date
KR900700217A (en) 1990-08-11
GB8928848D0 (en) 1990-06-13
KR930001265B1 (en) 1993-02-22
JPH02119148A (en) 1990-05-07
JP2745065B2 (en) 1998-04-28
GB2229859B (en) 1993-01-06
DE3990432C1 (en) 1994-06-23
WO1989011161A1 (en) 1989-11-16

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