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INVENTION
Patent of the Russian Federation RU2212380
ADVENTURE GLASS
Applicant's name: Alexandra Vasilyevna Kochanova
The name of the inventor: Alexandra Vasilievna Kochanova
The name of the patent holder: Alexandra Vasilievna Kochanova
Address for correspondence: 398055, Lipetsk, ul. Moscow, 99, apt.112, A.V. Kochanova
Date of commencement of the patent: 2001.06.04
The invention relates to the glass industry, namely to the compositions of aventurine glasses, and can be used to produce decorative facing materials and jewelry. The technical problem of the invention consists in increasing the microhardness and mechanical strength, expanding the color gamut, enhancing the adventurin effect by introducing oxides B 2 O 3 , Cu 2 O, TiO 2 , K 2 O, REE oxides. Aventurine glass has the following composition, wt. %: SiO 2 28.969-49.835; TiO 2 16.33-20.0; Al 2 O 3 2.90-7.90; Fe 2 O 3 2.85-5.14; FeO 0.01-0.93; CaO 15.70-17.10; MgO: 1.10-2.50; MnO 0.15-3.30; Na 2 O 4.00-6.00; K 2 O 1.00-3.00; P 2 O 5 0.43-0.86; Cr 2 O 3 0.91-5.00; Cu 2 O 0.01-2.00; B 2 O 3 0.10-2.00; La 2 O 3 0.005-0.01; SeO 2 0.001-0.005; Sm 2 O 3 0.002-0.01.
DESCRIPTION OF THE INVENTION
The invention relates to the glass industry, namely to compositions and methods for producing aventurine glasses, and can be used to produce decorative facing materials, jewelry.
Aventurine glass (1) is known, which includes, in mass%:
SiO 2 58.3 65.0
Na 2 O 17.0 25.5
СаО - 4,2 - 12,5
Al 2 O 3 0.1 - 2.0
Cu 2 O - 3.5 - 8.0
P 2 O 5 - 0.1 - 5.0
The glass has a cooking temperature of 1250-1400 ° C, a cooking time of 1 hour, a holding time of 1 hour, a heat treatment time of the molded articles of 0.5-3 hours.
The disadvantages of this glass are low physical and mechanical properties and a weak adventurin effect.
The closest to the proposed is aventurine glass (2), comprising, by mass%:
SiO 2 58.3 62.0
Al 2 O 3 4.1 - 6.4
CaO 6.0 to 20.5
MgO - 0.4-5.1
Fe 2 O 3 - 0.5 - 1.8
Na 2 O - 0.5 - 5.5
Cr 2 O 3 3.3 - 8.0
P 2 O 5 - 0.5 - 3.5
The glass additionally contains one oxide from the group CoO, FeO, MnO, wt.%:
CoO 2.0 - 6.0
FeO 2.0 to 6.5
MnO - 2.6 - 6.8
The disadvantages of this glass are low manufacturability, a weak adventurin effect.
The technical goal of the invention is to increase the microhardness and mechanical strength, the expansion of the color range, the intensification of the adventurin effect.
The task is achieved by the fact that the aventurine glass comprising SiO 2 , CaO, MgO, Al 2 O 3 , MnO, Fe 2 O 3 , P 2 O 5 , Na 2 O, Cr 2 O 3 , FeO additionally contains B 2 O 3 , Cu 2 O, TiO 2 , K 2 O, REE oxides with the following component ratio, mass%:
SiO 2 - 28.969 - 49.835
TiO 2 - 16.33 - 20.0
Al 2 O 3 - 2.9 - 7.9
Fe 2 O 3 - 2.85 - 5.14
FeO - 0.01 - 0.93
CaO - 15.7 - 17.1
MgO 1.1 to 2.5
MnO - 0.15 - 3.3
Na 2 O 4.0 to 6.0
K 2 O 1.0 to 3.0
P 2 O 5 - 0.43 - 0.86
Cr 2 O 3 - 0.91 - 5.0
B 2 O 3 - 0.1 - 2.0
Cu 2 O - 0.01 - 2.0
SeO 2 0.001 0.005
Sm 2 O 3 - 0.002 - 0.01
Introduction of TiO 2 , K 2 O, Cu 2 O, REE oxides contributes to the emergence of a vast area of metastable phase separation, where the processes of nucleation and precipitation of crystals occur, the staining of immiscible areas in all colors of the rainbow, which is fixed on the glass in the form of frozen multicolored patterns with sparkles Crystals of Cr 2 O 3 , MnO, Cu 2 O.
Introduction B 2 O 3 contributes to an increase in mechanical strength, chemical stability of glasses.
Introduction CuO promotes the growth and deposition of large crystals of copper.
To expand the color spectrum, the glass should contain REE oxides: La 2 O 3 , CeO 2 , Sm 2 O 3 , with the following component ratio:
La 2 O 3 0.005-0.01
CeO 2 0.001 0.005
Sm 2 O 3 - 0.002 - 0.01
The glass is prepared according to the usual technology: the charge is melted for 0.5-1.0 hours at 1350-1400 ° C, reduced to 1300 ° C, held for 10 minutes, annealed at 750 ° C.
Glass can be made from enrichment products of apatiteenefelin ores, feldspar mineral raw materials in a composition with granulated blast-furnace and converter, ferrochrome slags.
The resulting glasses have satisfactory properties, the cooking and heat treatment temperature is 1350 ° -1300 ° C, the secondary heat treatment temperature for internal stress removal is 750 ° C, the heat treatment time is 10 minutes, opaque, have a patterned surface, and in mass - golden, pink, green glitter From 0.5 to 2.0 μm.
Table 1 shows the compositions of aventurine glasses.
A distinctive feature of the offered aventurine glasses are high strength characteristics, a multicolored pattern with sparkles up to 0.5-2.0 μm in size (see Table 2).
INFORMATION SOURCES
1. Ac. 1058907, cl. C 03 C 3/04.
2. A.c. 739014, cl. С 03 С 3 / 097.0
CLAIM
Aventurine glass including SiO 2 , Al 2 O 3 , Fe 2 O 3 , CaO, MgO, Na 2 O, P 2 O 5 , Cr 2 O 3 , FeO, MnO, characterized in that it additionally contains B 2 O 3 , Cu 2 O, TiO 2 , K 2 O, oxides of rare earth elements with the following ratio of components, mass. %:
SiO 2 - 28.969-49.835
TiO 2 - 16.33-20.0
Al 2 O 3 - 2.90-7.90
Fe 2 O 3 - 2.85-5.14
FeO: 0.01-0.93
CaO = 15.70-17.10
MgO: 1.10-2.50
MnO = 0.15-3.30
Na 2 O - 4.00-6.00
K 2 O - 1.00-3.00
P 2 O 5 - 0.43-0.86
Cr 2 O 3 - 0.91-5.00
Cu 2 O - 0.01-2.00
In 2 O 3 - 0.10-2.00
La 2 O 3 - 0.005-0.01
SeO 2 0.001-0.005
Sm 2 O 3 0.002-0.01
print version
Date of publication 09.12.2006гг
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