CH554811A - PROCESS FOR PREPARING CORUNDUM CRYSTALS PRESENTING A FLAWLESS COLORATION. - Google Patents

PROCESS FOR PREPARING CORUNDUM CRYSTALS PRESENTING A FLAWLESS COLORATION.

Info

Publication number
CH554811A
CH554811A CH1854072A CH1854072A CH554811A CH 554811 A CH554811 A CH 554811A CH 1854072 A CH1854072 A CH 1854072A CH 1854072 A CH1854072 A CH 1854072A CH 554811 A CH554811 A CH 554811A
Authority
CH
Switzerland
Prior art keywords
flawless
coloration
corundum crystals
presenting
preparing corundum
Prior art date
Application number
CH1854072A
Other languages
French (fr)
Original Assignee
Tno
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 Tno filed Critical Tno
Publication of CH554811A publication Critical patent/CH554811A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
    • C30B29/10—Inorganic compounds or compositions
    • C30B29/16—Oxides
    • C30B29/22—Complex oxides
    • C30B29/26—Complex oxides with formula BMe2O4, wherein B is Mg, Ni, Co, Al, Zn, or Cd and Me is Fe, Ga, Sc, Cr, Co, or Al
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
    • C30B29/10—Inorganic compounds or compositions
    • C30B29/16—Oxides
    • C30B29/20—Aluminium oxides
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B31/00—Diffusion or doping processes for single crystals or homogeneous polycrystalline material with defined structure; Apparatus therefor
    • C30B31/02—Diffusion or doping processes for single crystals or homogeneous polycrystalline material with defined structure; Apparatus therefor by contacting with diffusion materials in the solid state

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
CH1854072A 1971-12-20 1972-12-20 PROCESS FOR PREPARING CORUNDUM CRYSTALS PRESENTING A FLAWLESS COLORATION. CH554811A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US21014071A 1971-12-20 1971-12-20
US312132A US3897529A (en) 1971-12-20 1972-12-04 Altering the appearance of corundum crystals

Publications (1)

Publication Number Publication Date
CH554811A true CH554811A (en) 1974-10-15

Family

ID=26904856

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1854072A CH554811A (en) 1971-12-20 1972-12-20 PROCESS FOR PREPARING CORUNDUM CRYSTALS PRESENTING A FLAWLESS COLORATION.

Country Status (9)

Country Link
US (1) US3897529A (en)
AT (1) AT330722B (en)
BE (1) BE793007A (en)
CA (1) CA978836A (en)
CH (1) CH554811A (en)
DE (1) DE2262104A1 (en)
FR (1) FR2164690B1 (en)
GB (1) GB1408648A (en)
IL (1) IL41125A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL69576A (en) * 1982-09-16 1986-08-31 Colliva Giovanni Apparatus for the cutting of spherical-faceted gems and gems thus obtained
IT1168707B (en) * 1983-08-03 1987-05-20 Giovanni Colliva EQUIPMENT FOR CUTTING GEMS WITH SPHERICAL FACETS AND GEMS SO OBTAINED
US5126094A (en) * 1989-03-02 1992-06-30 Farzin Nia Farrokh Heat treatment of an orthodontic bracket
DE4201490A1 (en) * 1992-01-21 1993-07-22 Otto Feuerfest Gmbh FIRE-RESISTANT MATERIAL FOR ELECTROLYSIS OVENS, METHOD FOR THE PRODUCTION AND USE OF THE FIRE-RESISTANT MATERIAL
US5762896A (en) * 1995-08-31 1998-06-09 C3, Inc. Silicon carbide gemstones
US5664440A (en) * 1996-06-05 1997-09-09 Roemer; Thomas Bruce Enhanced diamond ring
US6635309B2 (en) * 2001-03-12 2003-10-21 Richard D. Pollak Process for the color enhancement of gemstones
US6872422B2 (en) 2001-07-09 2005-03-29 Samir Gupta Process for imparting and enhancement of colours in gemstone minerals and gemstone minerals obtained thereby
US6997014B2 (en) * 2002-11-04 2006-02-14 Azotic Coating Technology, Inc. Coatings for gemstones and other decorative objects
US7526928B1 (en) 2002-11-04 2009-05-05 Azotic Coating Technology, Inc. Multi-color gemstones and gemstone coating deposition technology
CN110241458A (en) * 2019-05-24 2019-09-17 淅川正弘单晶刚玉厂 The production method of canescence single alundum

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US988230A (en) * 1910-05-10 1911-03-28 Heller & Son L Process of producing synthetic sapphires.
US1814219A (en) * 1926-05-17 1931-07-14 Ig Farbenindustrie Ag Process of improving certain physical properties of synthetic precious stones
US1775867A (en) * 1928-01-19 1930-09-16 Swiss Jewel Co S A Synthetic oriental emerald or emerald-green sapphire
US2448511A (en) * 1943-10-01 1948-09-07 Linde Air Prod Co Glossing corundum and spinel
US2488507A (en) * 1947-08-27 1949-11-15 Linde Air Prod Co Synthetic star rubies and star sapphires, and process for producing same
US2690062A (en) * 1949-12-21 1954-09-28 Union Carbide & Carbon Corp Synthetic corundum crystals and process for making same
US2690630A (en) * 1951-12-28 1954-10-05 Union Carbide & Carbon Corp Producing asteriated corundum crystals
FR1067037A (en) * 1951-12-28 1954-06-11 Union Carbide & Carbon Corp Process for manufacturing corundum crystals with a star structure
FR1119461A (en) * 1954-02-19 1956-06-20 Degussa Synthetic jewelry and their manufacturing processes
BE635034A (en) * 1962-08-10
US3539379A (en) * 1968-05-02 1970-11-10 Liner Technology Inc Process for coating gem stones
US3713877A (en) * 1969-02-10 1973-01-30 H Kirchner Method of strengthening ceramic bodies and strengthened ceramic bodies produced thereby

Also Published As

Publication number Publication date
FR2164690A1 (en) 1973-08-03
DE2262104A1 (en) 1973-07-19
US3897529A (en) 1975-07-29
CA978836A (en) 1975-12-02
BE793007A (en) 1973-06-19
ATA1084872A (en) 1975-10-15
AT330722B (en) 1976-07-12
GB1408648A (en) 1975-10-01
IL41125A (en) 1976-02-29
FR2164690B1 (en) 1976-10-29

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Legal Events

Date Code Title Description
PL Patent ceased