FR2316643A1 - Silicon carbide based material for watch cases - contains boron carbide - Google Patents

Silicon carbide based material for watch cases - contains boron carbide

Info

Publication number
FR2316643A1
FR2316643A1 FR7520832A FR7520832A FR2316643A1 FR 2316643 A1 FR2316643 A1 FR 2316643A1 FR 7520832 A FR7520832 A FR 7520832A FR 7520832 A FR7520832 A FR 7520832A FR 2316643 A1 FR2316643 A1 FR 2316643A1
Authority
FR
France
Prior art keywords
based material
watch cases
contains boron
silicon carbide
boron carbide
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
FR7520832A
Other languages
French (fr)
Other versions
FR2316643B1 (en
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.)
Ceraver SA
Original Assignee
Ceraver SA
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 Ceraver SA filed Critical Ceraver SA
Priority to FR7520832A priority Critical patent/FR2316643A1/en
Publication of FR2316643A1 publication Critical patent/FR2316643A1/en
Application granted granted Critical
Publication of FR2316643B1 publication Critical patent/FR2316643B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00—Cases
    • G04B37/22—Materials or processes of manufacturing pocket watch or wrist watch cases

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Powder Metallurgy (AREA)

Abstract

A SiC based material for watch cases is described. The material is obtd. by sintering, in an inert atmos. SiC powder contg. a few wt % of B4C. The material is very hard, has a high strength and relatively low density, but close to that of the single crystal prod. and is corrosion resistant. The material is a magnetic and can be highly polished an present a metallic lustre.
FR7520832A 1975-07-02 1975-07-02 Silicon carbide based material for watch cases - contains boron carbide Granted FR2316643A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7520832A FR2316643A1 (en) 1975-07-02 1975-07-02 Silicon carbide based material for watch cases - contains boron carbide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7520832A FR2316643A1 (en) 1975-07-02 1975-07-02 Silicon carbide based material for watch cases - contains boron carbide

Publications (2)

Publication Number Publication Date
FR2316643A1 true FR2316643A1 (en) 1977-01-28
FR2316643B1 FR2316643B1 (en) 1977-12-16

Family

ID=9157420

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7520832A Granted FR2316643A1 (en) 1975-07-02 1975-07-02 Silicon carbide based material for watch cases - contains boron carbide

Country Status (1)

Country Link
FR (1) FR2316643A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2109246A (en) * 1936-07-28 1938-02-22 Carborundum Co Dense nonmetallic bodies
FR1235791A (en) * 1958-09-17 1960-07-08 Kempten Elektroschmelz Gmbh Process for manufacturing articles of specific shape from carbides
CH538721A (en) * 1969-01-22 1970-12-15 Kuhn S A F Watch box
FR2211420A1 (en) * 1972-12-21 1974-07-19 Gen Electric
FR2236811A1 (en) * 1973-07-13 1975-02-07 Gen Electric
FR2249052A1 (en) * 1973-10-24 1975-05-23 Gen Electric

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2109246A (en) * 1936-07-28 1938-02-22 Carborundum Co Dense nonmetallic bodies
FR1235791A (en) * 1958-09-17 1960-07-08 Kempten Elektroschmelz Gmbh Process for manufacturing articles of specific shape from carbides
CH538721A (en) * 1969-01-22 1970-12-15 Kuhn S A F Watch box
FR2211420A1 (en) * 1972-12-21 1974-07-19 Gen Electric
FR2236811A1 (en) * 1973-07-13 1975-02-07 Gen Electric
FR2249052A1 (en) * 1973-10-24 1975-05-23 Gen Electric

Also Published As

Publication number Publication date
FR2316643B1 (en) 1977-12-16

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Legal Events

Date Code Title Description
ST Notification of lapse