DE2437821C3 - - Google Patents

Info

Publication number
DE2437821C3
DE2437821C3 DE19742437821 DE2437821A DE2437821C3 DE 2437821 C3 DE2437821 C3 DE 2437821C3 DE 19742437821 DE19742437821 DE 19742437821 DE 2437821 A DE2437821 A DE 2437821A DE 2437821 C3 DE2437821 C3 DE 2437821C3
Authority
DE
Germany
Prior art keywords
sapphire
reinforced
treated
wear resistance
diffused
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.)
Expired
Application number
DE19742437821
Other languages
German (de)
English (en)
Other versions
DE2437821B2 (de
DE2437821A1 (de
Inventor
Shigeru Hirakata Hayakawa
Fumio Moriguchi Hosomi
Takeshi Neyagawa Nagai
Kiyotaka Nara Wasa
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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
Priority claimed from JP9111273A external-priority patent/JPS5121767B2/ja
Priority claimed from JP12954673A external-priority patent/JPS5317401B2/ja
Priority claimed from JP2752974A external-priority patent/JPS50120801A/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of DE2437821A1 publication Critical patent/DE2437821A1/de
Publication of DE2437821B2 publication Critical patent/DE2437821B2/de
Application granted granted Critical
Publication of DE2437821C3 publication Critical patent/DE2437821C3/de
Granted legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/0027Ion-implantation, ion-irradiation or ion-injection
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/44Styli, e.g. sapphire, diamond

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Sliding-Contact Bearings (AREA)
DE19742437821 1973-08-13 1974-08-02 Verstärkter Saphir Granted DE2437821B2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP9111273A JPS5121767B2 (enExample) 1973-08-13 1973-08-13
JP12954673A JPS5317401B2 (enExample) 1973-11-17 1973-11-17
JP2752974A JPS50120801A (enExample) 1974-03-08 1974-03-08

Publications (3)

Publication Number Publication Date
DE2437821A1 DE2437821A1 (de) 1975-03-06
DE2437821B2 DE2437821B2 (de) 1978-10-19
DE2437821C3 true DE2437821C3 (enExample) 1979-06-13

Family

ID=27285830

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19742437821 Granted DE2437821B2 (de) 1973-08-13 1974-08-02 Verstärkter Saphir

Country Status (5)

Country Link
DE (1) DE2437821B2 (enExample)
FR (1) FR2245402B1 (enExample)
GB (1) GB1476485A (enExample)
IT (1) IT1018906B (enExample)
NL (1) NL7410842A (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2674244B1 (fr) * 1991-03-21 1993-05-28 Commissariat Energie Atomique Procede de preparation de corps en ceramique exempts d'auto-adhesion sous contrainte ou en cours de vieillissement.

Also Published As

Publication number Publication date
NL7410842A (nl) 1975-02-17
DE2437821B2 (de) 1978-10-19
FR2245402B1 (enExample) 1980-08-01
FR2245402A1 (enExample) 1975-04-25
IT1018906B (it) 1977-10-20
GB1476485A (en) 1977-06-16
DE2437821A1 (de) 1975-03-06

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)