GB614396A - Improvements in or relating to the coating of diamonds and other precious stones - Google Patents

Improvements in or relating to the coating of diamonds and other precious stones

Info

Publication number
GB614396A
GB614396A GB14604/45A GB1460445A GB614396A GB 614396 A GB614396 A GB 614396A GB 14604/45 A GB14604/45 A GB 14604/45A GB 1460445 A GB1460445 A GB 1460445A GB 614396 A GB614396 A GB 614396A
Authority
GB
United Kingdom
Prior art keywords
sputtering
metal
diamonds
coating
ionic bombardment
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
GB14604/45A
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.)
JAN KORS SMIT
Original Assignee
JAN KORS SMIT
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 JAN KORS SMIT filed Critical JAN KORS SMIT
Priority to GB14604/45A priority Critical patent/GB614396A/en
Publication of GB614396A publication Critical patent/GB614396A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/02—Pretreatment of the material to be coated
    • C23C14/021—Cleaning or etching treatments
    • C23C14/022—Cleaning or etching treatments by means of bombardment with energetic particles or radiation
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/14—Anti-slip materials; Abrasives
    • C09K3/1436—Composite particles, e.g. coated particles
    • C09K3/1445—Composite particles, e.g. coated particles the coating consisting exclusively of metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Composite Materials (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

A process for coating diamonds and like precious stones with a metal or refractory material consists in (a) cleaning chemically, e.g. with carbon tetrachloride followed by aqua regia; (b) cleaning "physically" by subjecting to ionic bombardment in vacuo; (c) depositing the desired metal &c. by vaporization or sputtering whilst still in vacuo. Diamonds and diamond powder thus treated can be imbedded in a metal, carbide or ceramic matrix for use as a cutting or grinding tool. A vacuum of 0.1-0.005mm. of mercury is used, whilst a potential of at least 1,000 volts both for ionic bombardment and sputtering, is employed. Copper, aluminium, beryllium, zinc, cobalt, silver, nickel, iron, chromium, silica, calcium fluoride may be deposited by vaporization; silver, nickel, copper, platinum, tungsten and cobalt by sputtering. When sputtering is employed, the electrodes (e.g. aluminium) used for ionic bombardment and those used for the sputtering, may be present together in the treating chamber. A further coating of the same or other metal may be subsequently built up by electro-plating, dipping or spraying.
GB14604/45A 1945-06-08 1945-06-08 Improvements in or relating to the coating of diamonds and other precious stones Expired GB614396A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB14604/45A GB614396A (en) 1945-06-08 1945-06-08 Improvements in or relating to the coating of diamonds and other precious stones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB14604/45A GB614396A (en) 1945-06-08 1945-06-08 Improvements in or relating to the coating of diamonds and other precious stones

Publications (1)

Publication Number Publication Date
GB614396A true GB614396A (en) 1948-12-15

Family

ID=10044226

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14604/45A Expired GB614396A (en) 1945-06-08 1945-06-08 Improvements in or relating to the coating of diamonds and other precious stones

Country Status (1)

Country Link
GB (1) GB614396A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2184049A1 (en) * 1972-05-10 1973-12-21 Gen Electric
FR2375338A1 (en) * 1976-12-24 1978-07-21 Okuda Kazumi MOLYBDENE PATTERN DIAMOND LINKED TO THIS
EP0408265A2 (en) * 1989-07-10 1991-01-16 The University Of North Carolina At Chapel Hill Process of forming a gold film on a diamond substrate by ion beam sputtering and apparatus for carrying out the process
WO1991017225A1 (en) * 1990-05-02 1991-11-14 Minnesota Mining And Manufacturing Company Coated abrasive alumina particles, manufacture and use
US8617310B1 (en) 2005-03-09 2013-12-31 Us Synthetic Corporation Method and system for perceiving a boundary between a first region and a second region of a superabrasive volume
US8969833B1 (en) 2011-12-16 2015-03-03 Us Synthetic Corporation Method and system for perceiving a boundary between a first region and a second region of a superabrasive volume

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2184049A1 (en) * 1972-05-10 1973-12-21 Gen Electric
FR2375338A1 (en) * 1976-12-24 1978-07-21 Okuda Kazumi MOLYBDENE PATTERN DIAMOND LINKED TO THIS
EP0408265A2 (en) * 1989-07-10 1991-01-16 The University Of North Carolina At Chapel Hill Process of forming a gold film on a diamond substrate by ion beam sputtering and apparatus for carrying out the process
EP0408265A3 (en) * 1989-07-10 1991-04-24 The University Of North Carolina At Chapel Hill Coated substrates and process
WO1991017225A1 (en) * 1990-05-02 1991-11-14 Minnesota Mining And Manufacturing Company Coated abrasive alumina particles, manufacture and use
AU639555B2 (en) * 1990-05-02 1993-07-29 Minnesota Mining And Manufacturing Company Coated abrasive alumina particles, manufacture and use
US8617310B1 (en) 2005-03-09 2013-12-31 Us Synthetic Corporation Method and system for perceiving a boundary between a first region and a second region of a superabrasive volume
US9453802B1 (en) 2005-03-09 2016-09-27 Us Synthetic Corporation Method and system for perceiving a boundary between a first region and a second region of a superabrasive volume
US8969833B1 (en) 2011-12-16 2015-03-03 Us Synthetic Corporation Method and system for perceiving a boundary between a first region and a second region of a superabrasive volume
US9423364B1 (en) 2011-12-16 2016-08-23 Us Synthetic Corporation Method and system for perceiving a boundary between a first region and second region of a superabrasive volume

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