HEAT-RESISTANT SYNTHETIC JEWELLERY MATERIAL

The invention relates to materials for jewellery industry, in particular, to synthetic materials intended to replace the natural gemstones. The heat-resistant synthetic jewellery material comprises a transparent, translucent or opaque composite nanocrystalline material on the basis of nanosized oxid...

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Bibliographische Detailangaben
Hauptverfasser:	ZHILIN, ALEXANDER ALEXANDROVICH, DYMSHITS, OLGA SERGEEVNA
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE APPARATUS THEREFOR BRACELETS CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY COINS CRYSTAL GROWTH GLASS HABERDASHERY HUMAN NECESSITIES JEWELLERY JOINING GLASS TO GLASS OR OTHER MATERIALS MANUFACTURE OR TREATMENT OF NANOSTRUCTURES MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES METALLURGY MINERAL OR SLAG WOOL NANOTECHNOLOGY OTHER PERSONAL ADORNMENTS PERFORMING OPERATIONS PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE REFINING BY ZONE-MELTING OF MATERIAL SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE SINGLE-CRYSTAL-GROWTH SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS TRANSPORTING UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL
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Beschreibung
Zusammenfassung:	The invention relates to materials for jewellery industry, in particular, to synthetic materials intended to replace the natural gemstones. The heat-resistant synthetic jewellery material comprises a transparent, translucent or opaque composite nanocrystalline material on the basis of nanosized oxide and silicate crystalline phases. The material comprises at least one of the following crystalline phases: spinel, quartz-like phases, sapphirine, enstatite, petalite-like phase, cordierite, willemite, magnesium aluminotitanates, zircon, rutile, zirconium titanate, zirconium dioxide with a content of ions of transition elements, rare-earth elements and precious metals of from 0.001 to 4 mol%. One of the crystalline phases is additionally quartz-like solid solutions of lithium magnesium zinc aluminosilicates with a virgilite or keatite structure. The composition is selected from the following components, in mol%: SiO 2 - 45-72; Al 2 O 3 - 15-30; MgO - 0.1-23.9; ZnO - 0.1-29; Li 2 O - 1-18; PbO - 0.1-7.0; ZrO 2 - 0.1-10; TiO 2 - 0.1-15; NiO - 0.001-4.0; CoO - 0.001-3.0; CuO - 0.001-4.0; Cr 2 O 3 - 0.001-1.0; Bi 2 O 3 - 0.001-3.0; Fe 2 O 3 - 0.001-3.0; MnO 2 - 0.001-3.0; CeO 2 - 0.001-3.0; Nd 2 O 3 - 0.001-3.0; Er 2 O 3 - 0.001-3.0; Pr 2 O 3 - 0.001-3.0; Au - 0.001-1.0. The invention makes it possible to produce a jewellery material with a low coefficient of thermal expansion and a high degree of heat resistance. Proposed material obtained by this method possesses uniform colour, optical characteristics similar to the characteristics of the main natural coloured minerals and manufacturable. Important advantages of the developed material are low coefficient of thermal expansion, hardness, chemical resistance and colour stability to thermal shock, which allows, in particular, accelerated mode of grinding and polishing as well as permits using the method of "casting with precious stones", as not only faceted samples do not crack in contact with the of silver or gold melt, but they're also able to retain their colour.