Yttrium aluminum silicate glass ceramic containing Y4.67(SiO4)3O apatite crystalline phase and preparation method thereof

A technology of silicate glass and glass ceramics, which is applied in glass manufacturing equipment, glass furnace equipment, glass forming and other directions, and achieves the effects of simple preparation process, simple operation and low production cost

Active Publication Date: 2018-12-07
INNER MONGOLIA UNIV OF SCI & TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

In addition, many researchers have found that in yttrium silicate materials, Y 4.67 (SiO 4 ) 3 O apatite often exists in trace amounts as the second phase, while the main crystal phase is Y 4.67 (SiO 4 ) 3 The glass ceramics of O have not been reported

Method used

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  • Yttrium aluminum silicate glass ceramic containing Y4.67(SiO4)3O apatite crystalline phase and preparation method thereof
  • Yttrium aluminum silicate glass ceramic containing Y4.67(SiO4)3O apatite crystalline phase and preparation method thereof
  • Yttrium aluminum silicate glass ceramic containing Y4.67(SiO4)3O apatite crystalline phase and preparation method thereof

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preparation example Construction

[0027] The invention provides a preparation method of yttrium aluminum silicate glass ceramics, comprising the following steps:

[0028]S1: Mix the raw material components evenly in proportion, then place them in a quartz crucible or a corundum crucible, put them into a silicon-molybdenum furnace, raise the temperature to 1450-1850°C to melt the raw materials into a liquid state, and heat them at a temperature of 1450-1850°C Constant temperature for 1-4 hours; then pour the molten liquid in the crucible onto the preheated graphite abrasive tool to solidify and form, quickly put it into a box furnace at 700-900°C, keep it warm for 1-2 hours, and drop to room temperature with the furnace to obtain Clear yttrium aluminum silicate glass. Wherein, each raw material component is mixed according to the following ratio: Y 2 o 3 48-60 parts by mass, Al 2 o 3 8 to 30 parts by mass and SiO 2 23 to 30 parts by mass.

[0029] S2: Obtain the glass transition temperature and crystal...

Embodiment 1

[0033] This embodiment provides a method for preparing yttrium aluminum silicate glass ceramics, comprising the following steps:

[0034] S1: 49% Y by mass percentage 2 o 3 , 23%Al 2 o 3 and 28% SiO 2 Weigh each component, mix the above components fully and evenly, place them in a corundum crucible, put them into a silicon-molybdenum furnace, raise the temperature to 1580°C, melt the raw materials into a liquid state, and keep the temperature at 1580°C for 3 hours, put the crucible The liquid in it was poured on the preheated graphite abrasive tool to solidify and formed, then quickly put it into a box furnace at 800°C, keep it warm for 2 hours, and then lowered to room temperature with the furnace to obtain transparent yttrium aluminosilicate glass.

[0035] S2: Obtain the glass transition temperature and crystallization peak temperature of the glass by differential scanning calorimetry, such as figure 1 As shown, the following crystallization heat treatment system was w...

Embodiment 2

[0038] This embodiment provides a method for preparing yttrium aluminum silicate glass ceramics, comprising the following steps:

[0039] S1: 52% Y by mass percentage 2 o 3 , 21%Al 2 o 3 and 27% SiO 2 Weigh each component, mix the above components fully and evenly, place in a corundum crucible, put it into a silicon molybdenum furnace, raise the temperature to 1600°C, melt the raw materials into a liquid state, and keep the temperature at 1600°C for 3 hours, put the crucible The liquid in it was poured on the preheated graphite abrasive tool to solidify and formed, then quickly put it into a box furnace at 800°C, keep it warm for 2 hours, and then lowered to room temperature with the furnace to obtain transparent yttrium aluminosilicate glass.

[0040] S2: The glass transition temperature and crystallization peak temperature of the glass are obtained by differential scanning calorimetry, and the following crystallization heat treatment system is formulated; the transparent...

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Abstract

The invention relates to yttrium aluminum silicate glass ceramic containing Y4.67(SiO4)3O apatite crystalline phase and a preparation method thereof. The preparation method comprises the following steps: S1, uniformly mixing the raw materials in proportion, heating to a molten state, and keeping the temperature to be constant, curing the molten liquid for molding, insulating to a preset time, andcooling to obtain yttrium aluminum silicate glass; S2, performing first heating on the yttrium aluminum silicate glass, insulating, nucleating, performing second heating, insulating, crystallizing, and cooling to obtain the yttrium aluminum silicate glass ceramic. According to the preparation method, the glass is subjected to crystallizing heat treatment after being molten from Y2O3, Al2O3 and SiO2 in the proportion, so that massive yttrium aluminum silicate glass ceramic having the main crystalline phase being Y4.67(SiO4)3O apatite can be prepared, the preparation process is simple, the operation is simple and convenient and the production cost is low, and massive Y4.67(SiO4)3O apatite crystal can be prepared in a short time.

Description

technical field [0001] The invention relates to the technical field of glass ceramics, in particular to a Y-containing 4.67 (SiO 4 ) 3 Yttrium-aluminosilicate glass ceramics with O-apatite crystal phase and a preparation method thereof. Background technique [0002] Based on unique structural characteristics and excellent physical and chemical properties, yttrium silicate is widely used in high-temperature structural ceramics, high-temperature anti-oxidation protective films, thermal barrier coating materials, dielectric materials and anti-friction materials; for example: yttrium silicate is added to Si 3 N 4 And SiC ceramics can improve its high temperature mechanical properties and thermal properties. Specifically, yttrium silicate has Y 2 Si 2 o 7 , Y 2 SiO 5 and Y 4.67 (SiO 4 ) 3 O three crystal structures. At present, the research on yttrium silicate materials mainly focuses on Y 2 Si 2 o 7 and Y 2 SiO 5 above; after a lot of work, the researchers fou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/00C03B5/16C03B19/02C03B25/02
CPCC03B5/16C03B19/02C03B25/02C03C10/00
Inventor 王觅堂郑庆双李梅张晓伟胡艳宏柳召刚
Owner INNER MONGOLIA UNIV OF SCI & TECH
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