BE793007A - Procede pour modifier l'aspect de cristaux de corindon et cristaux ainsi obtenus - Google Patents

Procede pour modifier l'aspect de cristaux de corindon et cristaux ainsi obtenus

Info

Publication number
BE793007A
BE793007A BE793007DA BE793007A BE 793007 A BE793007 A BE 793007A BE 793007D A BE793007D A BE 793007DA BE 793007 A BE793007 A BE 793007A
Authority
BE
Belgium
Prior art keywords
crystals
modifying
appearance
corundum
corundum crystals
Prior art date
Application number
Other languages
English (en)
French (fr)
Inventor
R R Carr
S D Nisevich
Original Assignee
Union Carbide 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.)
Publication date
Publication of BE793007A publication Critical patent/BE793007A/xx

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)
BE793007D 1971-12-20 Procede pour modifier l'aspect de cristaux de corindon et cristaux ainsi obtenus BE793007A (fr)

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
BE793007A true BE793007A (fr) 1973-06-19

Family

ID=26904856

Family Applications (1)

Application Number Title Priority Date Filing Date
BE793007D BE793007A (fr) 1971-12-20 Procede pour modifier l'aspect de cristaux de corindon et cristaux ainsi obtenus

Country Status (9)

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

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1168707B (it) * 1983-08-03 1987-05-20 Giovanni Colliva Apparecchiature per il taglio di gemme a faccette sferiche e gemme cosi' ottenute
IL69576A (en) * 1982-09-16 1986-08-31 Colliva Giovanni Apparatus for the cutting of spherical-faceted gems and gems thus obtained
US5126094A (en) * 1989-03-02 1992-06-30 Farzin Nia Farrokh Heat treatment of an orthodontic bracket
DE4201490A1 (de) * 1992-01-21 1993-07-22 Otto Feuerfest Gmbh Feuerfestes material fuer elektrolyseoefen, verfahren zur herstellung und verwendung des feuerfesten materials
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
US7526928B1 (en) 2002-11-04 2009-05-05 Azotic Coating Technology, Inc. Multi-color gemstones and gemstone coating deposition technology
US6997014B2 (en) * 2002-11-04 2006-02-14 Azotic Coating Technology, Inc. Coatings for gemstones and other decorative objects
CN110241458A (zh) * 2019-05-24 2019-09-17 淅川正弘单晶刚玉厂 灰白色单晶刚玉的生产方法

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
FR1067037A (fr) * 1951-12-28 1954-06-11 Union Carbide & Carbon Corp Procédé de fabrication de cristaux de corindon à structure en étoile
US2690630A (en) * 1951-12-28 1954-10-05 Union Carbide & Carbon Corp Producing asteriated corundum crystals
FR1119461A (fr) * 1954-02-19 1956-06-20 Degussa Bijoux synthétiques et leurs procédés de fabrication
BE635034A (de) * 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
ATA1084872A (de) 1975-10-15
DE2262104A1 (de) 1973-07-19
GB1408648A (en) 1975-10-01
AT330722B (de) 1976-07-12
FR2164690B1 (de) 1976-10-29
IL41125A (en) 1976-02-29
CH554811A (fr) 1974-10-15
FR2164690A1 (de) 1973-08-03
CA978836A (en) 1975-12-02
US3897529A (en) 1975-07-29

Similar Documents

Publication Publication Date Title
BE792326A (fr) Procede pour la preparation d'halogenohydrines
RO63066A (fr) Procede pour la preparation des penicillines
BE767299A (fr) Procede pour la preparation d'esters d'aspartyle-amino-acides
BE793007A (fr) Procede pour modifier l'aspect de cristaux de corindon et cristaux ainsi obtenus
RO63962A (fr) Procede pour la purification d'acrylonitrile
BE787832A (fr) Procede pour la preparation d'uree
BE785344A (fr) Procede de preparation d'alcenyl-silanes
BE789839A (fr) Procede pour le traitement superficiel d'articles
CA970129A (en) Production of iron sulfate monohydrate
BE787753A (fr) Procede pour la preparation d'esters de
RO62483A (fr) Procede pour la preparation des 2-arylaminoimidazolines-(2)-substituees
BE786336A (fr) Procede pour modifier les caracteristiques d'electrisation de surfaces
BE776098A (fr) Procede pour la preparation d'esters de glycidyle
BE773368A (fr) Installation pour la production d'air pur
BE781275A (fr) Procede de preparation d'o-aminobenzonitriles
BE782135A (fr) Procede pour la preparation d'une composition
BE823608A (fr) Procede pour l'epuration du chlorure de cyanogene et chlorure de cyanogene ainsi obtenu
BE789841A (fr) Procede pour la realisation d'elements de construction
RO63020A (fr) Procede pour la preparation d'esters des cephalosporinsulfomates
BE786282A (fr) Production d'alpha-olefines
RO63833A (fr) Procede pour la preparation d'esters et thyolesters aliphatiques
BE778852A (fr) Procede de preparation d'aminoaryl-urees et d'aminoaryl-thio-urees
BE785793A (fr) Procede pour l'azurage optique d'articles faconnes
BE770524A (fr) Procede pour l'obtention d'hellebrine pure
BE782808A (fr) Procede pour la preparation d'acides cyano-alcanecaboxyliques