CN113816605B - Imitated color sapphire glass and preparation method and application thereof - Google Patents
Imitated color sapphire glass and preparation method and application thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/02—Other methods of shaping glass by casting molten glass, e.g. injection moulding
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/04—Opacifiers, e.g. fluorides or phosphates; Pigments
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C4/00—Compositions for glass with special properties
- C03C4/02—Compositions for glass with special properties for coloured glass
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Abstract
The invention relates to a color-imitated sapphire glass, which comprises the following components: silicon dioxide SiO in parts by weight 2 30-60 parts; 2-40 parts of rare earth element oxide; and Iron (III) oxide Fe 2 O 3 0.1-3 parts. The color-imitated sapphire glass has a color-changing effect, presents orange with red color under natural light, presents golden yellow under an incandescent lamp, and presents various yellow to red transition colors such as yellow, yellow orange, orange pink to orange brown and the like under a mixed light source. The color-imitating sapphire glass has stable coloring effect and combines coloring ions (namely yttrium ions, holmium ions and iron ions) with Y 3+ 、Ho 3+ 、Fe 3+ The form exists in the glass, the valence state is stable and does not change, the spectral characteristic and the coloring effect are very stable, and the glass is not influenced by glass components and a melting process. In addition, the invention also relates to a preparation method and application of the imitated color sapphire glass.
Description
Technical Field
The invention relates to the technical field of artificial gems, in particular to a color-imitated sapphire glass and a preparation method and application thereof.
Background
Sapphire (Sapphire) is a general term for corundum stones of other colors than Ruby (Ruby) among corundum stones, and the main component is alumina (Al) 2 O 3 ). In addition to the beautiful blue color, sapphire has a large set of color sapphire, which includes all corundum stones except the red and blue colors. The color of the colored sapphire can be pink, yellow, green or purple, and the like, and even the same sapphire has multiple colors. Papara sapphire (english name padcaradscha) is a special natural sapphire variety, and the color of the papara sapphire is generally orange with a pink hue, so that the papara sapphire is popular and touted by people because the color of the papara sapphire is close to the colors of lotus flowers in midsummer and sunset, dusk and sky. Yellow sapphire is also a very popular gemstone, including light yellow, canary yellow, golden yellow, honey yellow and whiskey yellow, with golden yellow being the best.
The colored sapphire belongs to mineral resources with high value, strong market demand and rare natural yield, and is also a precious stone resource relatively scarce in China. In recent years, the gem like glass is widely concerned as a substitute material of precious natural gems, is one of ways for continuously solving the imbalance of supply and demand of the natural gems for a long time, and is also the research focus in the field of artificial gems in the world at present.
Most of the currently studied sapphire-like glasses are blue sapphire-like glasses, and colored sapphire (such as parpala sapphire or yellow sapphire) like glasses have not been reported.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a simulated color sapphire glass which presents different colors according to the content change of the blended combined color-inducing elements and the change of a light source, wherein the colors comprise orange, golden yellow and various yellow to red transition colors.
The invention also provides a preparation method of the imitated color sapphire glass.
In order to achieve the above object, the present invention provides the following technical solutions.
The color-imitating sapphire glass comprises the following components: based on the weight portion, the weight portion of the material,
silicon dioxide SiO 2 30-60 parts;
2-40 parts of rare earth element oxide; and
iron (III) oxide 2 O 3 0.1-3 parts.
Preferably, SiO 2 The content of (B) is 35 to 45 parts by weight, preferably 38 to 42 parts by weight; the content of the rare earth element oxide is 10-30 parts by weight, preferably 19-22 parts by weight; fe 2 O 3 The content of (B) is 0.1-2.5 parts and 0.6-1.2 parts by weight.
Preferably, the rare earth oxide may be yttrium oxide Y 2 O 3 And holmium sesquioxide Ho 2 O 3 Combinations of (a) and (b). Y is 2 O 3 The content of (b) may be 1 to 20 parts by weight, preferably 5 to 15 parts by weight, more preferably 9 to 12 parts by weight. Ho 2 O 3 The content of (B) may be 1 to 20 parts by weight, preferably 5 to 15 parts by weight, more preferably 9 to 11 parts by weight.
Preferably, Y 2 O 3 And Ho 2 O 3 In a weight ratio of (0.5-2.5):1, preferably (0.8-1.5):1, more preferably (0.9-1.2): 1. The inventors have surprisingly found that when Y is 2 O 3 And Ho 2 O 3 When the weight ratio of the two components is close to 1:1, the imitated color sapphire glass has a color change effect which can be observed by naked eyes, and the color change effect is more obvious when the weight ratio of the two components is close to 1: 1; on the contrary, the further away from 1:1, the less the discoloration effect, even no discoloration occurs.
Preferably, the imitated color sapphire glass further comprises sodium oxide Na 2 O, Potassium oxide K 2 O, boron trioxide B 2 O 3 Barium oxide BaO, zinc oxide ZnO, aluminum oxide Al 2 O 3 And arsenic trioxide As 2 O 3 One or more of (a).
Preferably, the imitated color sapphire glass further comprises 3-15 parts by weight, preferably 10-15 parts by weight, more preferably 12-14 parts by weight of sodium oxide Na 2 O。
Preferably, the imitated color sapphire glass also comprises 5-20 parts by weight of potassium oxide K, preferably 10-20 parts by weight, more preferably 15-16.5 parts by weight 2 O。
Preferably, the imitated color sapphire glass further comprises 1 to 3 parts by weight of boron trioxide B, preferably 1.5 to 2.5 parts by weight, more preferably 1.9 to 2.3 parts by weight 2 O 3 。
Preferably, the imitated color sapphire glass further comprises 0.001-7 parts by weight, preferably 2-7 parts by weight, more preferably 3-4 parts by weight of barium oxide BaO.
Preferably, the imitated color sapphire glass further comprises zinc oxide ZnO of 0.001-3 parts by weight, preferably 0.5-2.5 parts by weight, and more preferably 0.8-1 part by weight.
In the colored sapphire glass of the invention, Na 2 O is a glass fluxing agent, so that the viscosity of the glass can be reduced, and the glass is easy to melt; k 2 O can reduce the crystallization tendency of the glass and increase the transparency and the gloss of the glass; BaO and ZnO can improve the hardness of the glass and the wear resistance of the glass, thereby being longMaintain its gloss for a long time.
Preferably, the imitated color sapphire glass further comprises 0.001 to 3 parts by weight of aluminum oxide Al, preferably 0.5 to 2 parts by weight, and more preferably 0.8 to 1.2 parts by weight 2 O 3 。
In the colored sapphire glass of the invention, Al 2 O 3 Can reduce the crystallization tendency of the glass and has the effect of phase separation when Na in the glass 2 O and Al 2 O 3 When the molar ratio is more than 1, the glass network framework is broken and changed, and aluminum oxide tetrahedrons are formed to form a continuous structural network with silicon oxide tetrahedrons, so that the color change is promoted, and the color change phenomenon is more obvious.
Preferably, the imitated color sapphire glass further comprises 0.001 to 3 parts by weight of arsenic trioxide As, preferably 0.1 to 1 part by weight, more preferably 0.4 to 0.6 part by weight 2 O 3 。As 2 O 3 The fining agent promotes the removal of bubbles in the glass during the melting of the glass.
In one embodiment, the imitation colored sapphire glass comprises the following components: based on the weight portion, the weight portion of the material,
in another specific embodiment, the imitation colored sapphire glass comprises the following components: based on the weight portion, the weight portion of the material,
the invention also provides a preparation method of the imitated color sapphire glass, which comprises the following steps:
mixing all the raw materials to obtain a batch mixture;
melting the batch to obtain a molten mass; and
and annealing the molten mass after forming.
The raw materials comprise: SiO 2 2 And silicon ore; rare earth element oxide and Fe 2 O 3 . Wherein, SiO 2 And one or more of the silicon ore and the silicon ore are SiO in the imitated color sapphire glass 2 The source of the ingredient.
Preferably, the silica ore may be one or more of feldspar, talc, quartz stone and limestone.
Preferably, the raw material further comprises Na 2 One or more of O, sodium carbonate and sodium nitrate, which is Na in the imitated color sapphire glass 2 The source of the O component.
Preferably, the raw material further comprises K 2 One or more of O, potassium carbonate and potassium nitrate, which is K in the imitated color sapphire glass 2 The source of the O component.
Preferably, the raw materials also comprise borax which is B in the imitated color sapphire glass 2 O 3 The source of the ingredient. The borax can reduce the melting temperature of the batch, thereby advantageously reducing the production cost and saving the energy consumption.
Preferably, the raw material also comprises BaO and BaCO 3 And Ba (NO) 3 ) 2 Which is a source of the BaO component in the above-described colored sapphire glass.
Preferably, the feedstock also comprises ZnO and ZnCO 3 One or two of the above-mentioned materials are sources of ZnO components in the above-mentioned imitation color sapphire glass.
Preferably, the raw material further includes Al 2 O 3 。
Preferably, the raw material further comprises As 2 O 3 。
Preferably, all raw materials are ground and mixed uniformly to obtain the batch.
Preferably, the batch is heated to 1400 ℃ and 1650 ℃ for melting, and the melt is obtained after 1-4 hours of heat preservation. Preferably, the rate of temperature rise is 5-15 deg.C/min.
Preferably, the melt is poured into a mold for molding and then annealed.
Preferably, the annealing temperature is 300-700 ℃, and through a large number of experimental comparisons, the effect of eliminating the residual stress of the glass in the temperature range is best, the stress concentration phenomenon can be avoided, and the annealing time is 1-4 hours.
The invention also provides application of the imitated color sapphire glass in the fields of optical glass materials and ornaments.
Compared with the prior art, the invention has the following beneficial effects:
1. the imitated color sapphire glass of the invention presents different colors according to the content change of the blended combined color-causing element and the light source change, including orange, golden yellow and various yellow to red transition colors.
2. When Y in the imitated color sapphire glass of the invention 2 O 3 And Ho 2 O 3 When the weight ratio of the red to the yellow to orange transition colors is close to 1:1, the color-imitated sapphire glass also has a color-changing effect, shows an orange color with red tone (namely an orange color which is similar to the orange pink color of natural papara sapphire) under natural light (a D65 light source), shows a golden yellow color under an incandescent lamp (A light source), and shows various yellow to red transition colors such as yellow, yellow orange, orange pink to orange brown and the like under a mixed light source. Y is 2 O 3 And Ho 2 O 3 The closer to 1:1 the weight ratio of (A) is, the more obvious the color change effect is; on the contrary, the further away from 1:1, the less the discoloration effect, even no discoloration occurs.
3. The color-imitating sapphire glass has stable coloring effect and combines coloring ions (namely yttrium ions, holmium ions and iron ions) with Y 3+ 、Ho 3+ 、Fe 3+ The form exists in the glass, the valence state is stable and does not change, the spectral characteristic and the coloring effect are very stable, and the glass is not influenced by glass components and a melting process.
4. The physical properties of the colored sapphire glass of the present invention are close to those of natural sapphire (such as natural metamorphic diaspore and natural emerald), as shown in table 1 below. The invention relates to a color-imitated sapphire glassThe glass has a refractive index of 1.55 to 1.57 and a density of 2.97 to 3.02g/cm 3 The Mohs hardness was 6.5. In addition, the imitated color sapphire glass has good chemical stability and is not dissolved in strong acid and strong alkali solutions.
TABLE 1 various physical properties of the colored-sapphire-like glass of the present invention and natural sapphire
5. The imitated color sapphire glass does not contain lead. While the conventional gem-like glass is used for improving the color and luster, the addition amount of lead can reach more than 24 percent, such as Schwarochien crystal glass. Therefore, the imitated color sapphire glass of the invention prevents the possibility of chronic lead poisoning when a consumer wears the glass. In addition, the preparation method of the invention avoids lead pollution generated in production, and is more environment-friendly.
6. The preparation raw materials of the color-imitated sapphire glass are cheap and easy to obtain, the production cost is low, and the added value of the color-imitated sapphire glass as an artificial sapphire product is greatly improved.
Drawings
FIG. 1 is a chart of the ultraviolet-visible absorption spectrum of the gem-like photochromic glass prepared in example 1 of the present invention.
Detailed Description
In order to make the content of the present invention more comprehensible, the technical solutions of the present invention are further described below with reference to specific embodiments.
It is to be understood that the disclosed embodiments are merely exemplary of the invention, which can be embodied in various forms, and that specific details of the invention are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present disclosure.
In the present invention, terms and terms not specifically described are common general knowledge of those skilled in the art, and methods not specifically described are conventional methods known to those skilled in the art. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
The adopted detection method comprises the following steps:
and (3) testing chemical composition LA-ICP-MS elements: and analyzing and determining the material components of the prepared imitated color sapphire glass by using an ICPMS-7500ce type laser ablation inductively coupled plasma mass spectrometer.
Color parameter (L) * ，a * ，b * ，C * ，h 0 ) And (3) testing: and quantitatively analyzing the color parameters of the prepared imitated color sapphire glass by using an X-Rite Ci7000A model desk-top high-precision spectrophotometer.
Ultraviolet-visible absorption spectrum test: and testing the absorption spectrum of the prepared gem-like color-changing glass by adopting a UV-3600 type ultraviolet-visible spectrophotometer.
Refractive index: the measurement was performed using a refractometer, and readings were taken and recorded every 30 ° rotation, and 360 ° rotation was performed to measure the refractive index value of the prepared gemstone-like stained glass.
Density: the density is measured by a still water weighing mode, and the density average value is obtained by testing each sample for 1-2 times.
Example 1
The imitated color sapphire glass of the embodiment is prepared from the following raw materials: silicon dioxide SiO in parts by weight 2 41 parts of potassium carbonate K 2 CO 3 22.5 parts of sodium nitrate NaNO 3 35 parts of yttrium oxide Y 2 O 3 11.5 parts of holmium sesquioxide Ho 2 O 3 10 portions of borax Na 2 B 4 O 7 ·10H 2 5.5 parts of O, 4 parts of barium oxide BaO and Fe 2 O 3 1 part of arsenic trioxide As 2 O 3 1 part of aluminum oxide Al 2 O 3 1.5 parts and 1 part of zinc oxide ZnO.
The preparation method comprises the following steps:
the raw materials are ground and uniformly mixed to form a batch, and the batch is placed into a platinum-rhodium alloy crucible. And then, putting the platinum-rhodium alloy crucible into a high-temperature electric furnace, heating to the melting temperature of 1650 ℃ at the heating rate of 15 ℃/min, and preserving the heat for 1 hour to obtain a molten mass. And pouring the molten mass into a cast iron mold, and quickly putting the cast iron mold into a heat-preservation electric furnace for annealing at the annealing temperature of 300 ℃ for 4 hours. After cooling, the imitated color sapphire glass is obtained.
The chemical composition and color parameter values of the final product are shown in table 2 after test analysis:
TABLE 2
Note: l is a radical of an alcohol * Represents lightness, a * Representing red/green values (positive values representing a reddish shade and negative values representing a greenish shade), b * Representing yellow/blue values (positive values representing a yellowish colour and negative values representing a bluish colour), C * Represents the degree of saturation, h 0 Representing the hue angle,. DELTA.h 0 Representative hue difference (. DELTA.h) 0 Color hue change phenomenon observable with naked eye at > 10 °). In addition, the non-essential ingredients and their contents are not listed in the table.
The glass of this example had an orange-golden discoloration observable to the naked eye with a hue difference of 12.64 °. In addition, the glass of this example was tested to have a refractive index value of 1.561 and a density of 2.970g/cm 3 The Mohs hardness was 6.5. The luminescence of the glass is observed by an ultraviolet fluorescent lamp, and the glass is inert under long-wave ultraviolet light (365nm) and shows strong purple red fluorescence under short-wave ultraviolet light (253.7 nm). It can be seen that the physical properties of the glass of this embodiment are close to those of natural sapphire.
The spectrum of the UV-VIS absorption spectrum of the glass of this example is shown in FIG. 1.
In a visible spectrum range (375-740 nm), one or more strong absorption peaks and strong absorption bands are arranged in a blue-violet region within a range of 420-470 nm, one or more strong absorption peaks and strong absorption bands are arranged in a blue-green region within a range of 470-520 nm, and a part of ultraviolet region absorption components are accompanied, so that the glass is transparent in a visible light yellow region (570-580 nm), a yellow orange region (580-600 nm), an orange region (600-610 nm) and a red orange region (610-680 nm), the finally presented color changes (changes from golden yellow to various orange hues) along with the change of a light source, and the glass presents a color change effect under different light sources, namely, the glass presents orange with red tone under sunlight and presents golden yellow under incandescent light, and the glass presents yellow, yellow orange, orange pink and orange to orange color changes along with the change of a sample observation angle under a mixed light source.
Example 2
The imitated color sapphire glass of the embodiment is prepared from the following raw materials: silicon dioxide SiO in parts by weight 2 40 parts of potassium carbonate K 2 CO 3 24 parts of sodium nitrate NaNO 3 37.5 parts of yttrium oxide Y 2 O 3 10 parts of holmium trioxide Ho 2 O 3 10.5 parts of borax Na 2 B 4 O 7 ·10H 2 6 portions of O, 3.5 portions of barium oxide BaO and Fe 2 O 3 1.5 parts of arsenic trioxide As 2 O 3 0.5 part of aluminum oxide Al 2 O 3 1 part and 1 part of zinc oxide ZnO.
The preparation method comprises the following steps:
the raw materials are ground and uniformly mixed to form a batch, and the batch is placed into a platinum-rhodium alloy crucible. And then, putting the platinum-rhodium alloy crucible into a high-temperature electric furnace, heating to the melting temperature of 1600 ℃ at the heating rate of 10 ℃/min, and preserving the heat for 1.5 hours to obtain a molten mass. Pouring the molten mass into a cast iron grinding die, and quickly putting the cast iron grinding die into a heat-insulating electric furnace for annealing at the annealing temperature of 600 ℃ for 2 hours. After cooling, the imitated color sapphire glass is obtained.
The chemical composition and color parameter values of the final product are shown in table 3, after test analysis:
TABLE 3
The glass of this example had an orange-golden discoloration observable with a hue difference of 17.6 °. The glass of this example was tested to have a refractive index value of 1.569 and a density of 3.01g/cm 3 The Mohs hardness is 6.5, and each physical property is close to that of natural sapphire.
Example 3
The imitated color sapphire glass of the embodiment is prepared from the following raw materials: silicon dioxide SiO in parts by weight 2 43.5 parts of potassium carbonate K 2 CO 3 22 parts of sodium nitrate NaNO 3 28.5 parts of yttrium oxide Y 2 O 3 7 parts of holmium sesquioxide Ho 2 O 3 10 portions of borax Na 2 B 4 O 7 ·10H 2 7 portions of O, 4 portions of barium oxide BaO and Fe 2 O 3 1 part of arsenic trioxide As 2 O 3 0.5 part of aluminum oxide Al 2 O 3 2 parts of zinc oxide ZnO and 1 part of zinc oxide.
The preparation method comprises the following steps:
the raw materials are ground and uniformly mixed to form a batch, and the batch is placed into a corundum crucible. Then, the corundum crucible is put into a high-temperature electric furnace to be heated to the melting temperature of 1400 ℃ at the heating rate of 5 ℃/min, and the temperature is kept for 4 hours to obtain a molten mass. And pouring the molten mass into a cast iron mold, and quickly putting the cast iron mold into a heat-preservation electric furnace for annealing at the annealing temperature of 700 ℃ for 1 hour. After cooling, the imitated color sapphire glass is obtained.
The chemical composition and color parameter values of the final product are shown in table 4, by test analysis:
TABLE 4
The glass of the embodiment hasWeak orange-golden yellow color change phenomenon, and the color difference is 2.31 degrees. The glass of this example was tested to have a refractive index value of 1.554 and a density of 2.973g/cm 3 The Mohs hardness is 6.5, and each physical property is close to that of natural sapphire.
Example 4
The imitated color sapphire glass of the embodiment is prepared from the following raw materials: silicon dioxide SiO in parts by weight 2 43 parts of potassium carbonate K 2 CO 3 19 parts of sodium nitrate NaNO 3 32 parts of yttrium oxide Y 2 O 3 14 parts of holmium trioxide Ho 2 O 3 6.5 parts of borax Na 2 B 4 O 7 ·10H 2 O6, BaO 4 and Fe 2 O 3 2 parts of arsenic trioxide As 2 O 3 0.5 part of aluminum oxide Al 2 O 3 1 part and 1.5 parts of zinc oxide ZnO.
The preparation method comprises the following steps:
the raw materials are ground and uniformly mixed to form a batch, and the batch is placed into a platinum-rhodium alloy crucible. And then, putting the platinum-rhodium alloy crucible into a high-temperature electric furnace, heating to the melting temperature of 1450 ℃ at the heating rate of 10 ℃/min, and preserving the temperature for 3.5 hours to obtain a molten mass. And pouring the molten mass into a cast iron mold, and quickly putting the cast iron mold into a heat-preservation electric furnace for annealing at the annealing temperature of 400 ℃ for 3 hours. After cooling, the imitated color sapphire glass is obtained.
The chemical composition and color parameter values of the final product are shown in table 5, by test analysis:
TABLE 5
The glass of this example had a weak orange-golden discoloration with a hue difference of 1.47 °. The glass of this example was tested to have a refractive index value of 1.562 and a density of 2.995g/cm 3 The Mohs hardness is 6.5, and each physical property is close to that of natural sapphire.
Example 5
The imitated color sapphire glass of the embodiment is prepared from the following raw materials: silicon dioxide SiO in parts by weight 2 41 parts of potassium carbonate K 2 CO 3 22.5 parts of sodium nitrate NaNO 3 35 parts of yttrium oxide Y 2 O 3 11.5 parts of holmium sesquioxide Ho 2 O 3 10 portions of borax Na 2 B 4 O 7 ·10H 2 5.5 parts of O, 4 parts of barium oxide BaO and Fe 2 O 3 1 part of arsenic trioxide As 2 O 3 1 part of aluminum oxide Al 2 O 3 1.5 parts and 1 part of zinc oxide ZnO.
The preparation method comprises the following steps:
the raw materials are ground and uniformly mixed to form a batch mixture, and the batch mixture is placed into a corundum crucible. Then, the corundum crucible is put into a high-temperature electric furnace to be heated to the melting temperature of 1500 ℃ at the heating rate of 10 ℃/min, and the temperature is kept for 3 hours to obtain a molten mass. And pouring the molten mass into a cast iron mold, and quickly putting the cast iron mold into a heat-insulating electric furnace for annealing at the annealing temperature of 500 ℃ for 2.5 hours. After cooling, the imitated color sapphire glass is obtained.
The chemical composition and color parameter values of the final product are shown in table 6, by test analysis:
TABLE 6
The glass of this example had a weak orange-gold discoloration with a hue difference of 5.63 °. The glass of this example was tested to have a refractive index value of 1.567 and a density of 3.02g/cm 3 The Mohs hardness is 6.5, and each physical property is close to that of natural sapphire.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (8)
1. The color-imitated sapphire glass is characterized by comprising the following components: based on the weight portion, the weight portion of the material,
silicon dioxide SiO 2 30-60 parts;
2-40 parts of rare earth element oxide; and
iron (III) oxide Fe 2 O 3 0.1-3 parts;
the rare earth element oxide is yttrium oxide Y 2 O 3 And holmium sesquioxide Ho 2 O 3 A combination of (1);
Y 2 O 3 and Ho 2 O 3 The weight ratio of (0.9-1.2) to 1.
2. The imitation colored sapphire glass of claim 1, wherein Y is 2 O 3 The content of (A) is 1-20 weight parts; ho 2 O 3 The content of (B) is 1-20 parts by weight.
3. The imitation colored sapphire glass of claim 1, wherein the SiO is SiO 2 The content of (B) is 35-45 weight portions; the content of the rare earth element oxide is 10-30 parts by weight; fe 2 O 3 The content of (B) is 0.1-2.5 parts.
4. The imitation colored sapphire glass of claim 1, further comprising sodium oxide (Na) 2 O, potassium oxide K 2 O, boron trioxide B 2 O 3 Barium oxide BaO, zinc oxide ZnO, and aluminum oxide Al 2 O 3 And arsenic trioxide As 2 O 3 One or more of (a).
5. The imitation colored sapphire glass of claim 4, comprising the following ingredients: based on the weight portion, the weight portion of the material,
SiO 2 38-42 parts;
Y 2 O 3 9-12 parts of a solvent;
Ho 2 O 3 9-11 parts;
Fe 2 O 3 0.6-1.2 parts;
Na 2 12-14 parts of O;
K 2 15-16.5 parts of O;
B 2 O 3 1.9-2.3 parts;
3-4 parts of BaO
0.8-1 part of ZnO;
Al 2 O 3 0.8-1.2 parts; and
As 2 O 3 0.4 to 0.6 portion.
6. The method of producing the imitation color sapphire glass of any one of claims 1-5, comprising:
mixing all the raw materials to obtain a batch mixture;
melting the batch to obtain a molten mass; and
and annealing the molten mass after forming.
7. The method as claimed in claim 6, wherein the annealing temperature is 300-700 ℃.
8. Use of the colored sapphire glass of any one of claims 1 to 5 or the colored sapphire glass obtained by the production method of any one of claims 6 to 7 in the fields of optical glass materials and ornaments.
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|---|---|---|---|---|
| US6716780B2 (en) * | 2001-09-26 | 2004-04-06 | Guardian Industries Corp. | Grey glass composition including erbium, holmium, and/or yttrium |
| FR2933089B1 (en) * | 2008-06-25 | 2011-02-25 | Commissariat Energie Atomique | VITREOUS MATERIAL WITH VISUAL EFFECTS AND APPLICATIONS |
| RU2545380C2 (en) * | 2013-05-13 | 2015-03-27 | Авакян Карен Хоренович | Heat-resistant synthetic jewellery material |
| US10336647B2 (en) * | 2016-12-16 | 2019-07-02 | Corning Incorporated | Holmium-based contrast enhancing UV blocking glass compositions |
| CZ307684B6 (en) * | 2016-12-23 | 2019-02-13 | Preciosa, A.S. | A material for the production of costume jewellery and jewellery stones with a high index of refraction and high heat resistance |
| CN108373261B (en) * | 2018-01-16 | 2019-04-16 | 东莞市屹泰水晶工艺有限公司 | Artificial color changing gem and preparation method thereof |
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