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CN1847182A - Ultralow thermal expansion devitrified glass - Google Patents

Ultralow thermal expansion devitrified glass Download PDF

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Publication number
CN1847182A
CN1847182A CNA2005100250953A CN200510025095A CN1847182A CN 1847182 A CN1847182 A CN 1847182A CN A2005100250953 A CNA2005100250953 A CN A2005100250953A CN 200510025095 A CN200510025095 A CN 200510025095A CN 1847182 A CN1847182 A CN 1847182A
Authority
CN
China
Prior art keywords
crystallization
coring
thermal expansion
ultra
devitrified glass
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CNA2005100250953A
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Chinese (zh)
Inventor
黄维彦
谢瑞虎
刘宏伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
XINHU GLASS WORKS SHANGHAI
Original Assignee
XINHU GLASS WORKS SHANGHAI
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.)
Filing date
Publication date
Application filed by XINHU GLASS WORKS SHANGHAI filed Critical XINHU GLASS WORKS SHANGHAI
Priority to CNA2005100250953A priority Critical patent/CN1847182A/en
Publication of CN1847182A publication Critical patent/CN1847182A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL 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
    • C03C3/00Glass compositions
    • C03C3/04Glass compositions containing silica
    • C03C3/076Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/097Glass compositions containing silica with 40% to 90% silica, by weight containing phosphorus, niobium or tantalum
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL 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
    • C03C10/00Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Glass Compositions (AREA)

Abstract

The present invention discloses one kind of ultralow thermal expansion devitrified glass used for reflector, planar mirror, template and other precise optical elements. It has the material composition of: SiO2 47.2-49.1(in wt%, the same as below),Al2O3 27.6-29.0,Sb2O3 0.78-0.82,As2O3 0.30-0.35,BaO 2.98-3.05,ZnO 2.00-2.05, CaO 2.28-2.33,MgO 0.5-1.0,Li2O 7.1-7.5,P2O5 4.0-4.4,ZrO2 1.2-1.7 and TiO2 1.4-1.5 . The technological process includes the following steps: mixing the components, high temperature smelting in high temperature quartz-ceramic crucible at 1580-1630 deg.c, tapping at 1450 deg.c, forming, inspection, nucleating at 660-690 deg.c, crystallizing at 690-720 deg.c, precise annealing at 640-540 deg.c.

Description

Ultra-low-expansion glass ceramic
Affiliated technical field
The present invention is a trade mark in the big class of lithium aluminium silicon series devitrified glass, is the material that is used for large-scale astronomical telescope mirror embryo, precision optics speculum, flat mirror, model, quarter chi, grating substrate, processing template, laser gyro cavity.
Background technology
At present, the devitrified glass coefficient of expansion that is used for the speculum of precision optics, flat mirror, model, quarter chi, grating substrate, processing template, laser gyro cavity is difficult to meet the demands than higher.
Summary of the invention
The object of the present invention is to provide a kind of coefficient of expansion (α), melting performance, the well behaved a kind of ultra-low-expansion glass ceramic of crystallization.
The present invention is selecting SiO 2, Al 2O 3, Sb 2O 3, As 2O 3, BaO, ZnO, CaO, MgO, Li 2O, P 2O 5, ZrO 2, TiO 2On the basis of system, SiO in will filling a prescription 2, Al 2O 3, Li 2O, P 2O 5, ZrO 2Adjust Deng oxide compound, adopt high melt, moulding, check, coring, crystallization, performance test processing step to realize its purpose.
Ultra-low-expansion glass ceramic V of the present invention 02, Liang component is SiO by weight percentage 2---47.2-49.1, Al 2O 3---27.6-29.0, Sb 2O 3---0.78-0.82, As 2O 3---0.30-0.35, BaO---2.98-3.05, ZnO---2.00-2.05, CaO---2.28-2.33, MgO---0.5-1.0, Li 2O---7.1-7.5, P 2O 5---4.0-4.4, ZrO 2---1.2-1.7, TiO 2---1.4-1.5, said components is mixed, found through 1580~1630 ℃, come out of the stove for 1450 ℃, moulding, check, again through 660~690 ℃ of coring, through 690~720 ℃ of crystallization, 640~540 ℃ of fine annealings record α :≤0 ± 0.7 * 10 after the cooling -7/ ℃ (50~60 ℃), stress birefringence≤10nm/cm, bubble, striped index meet the requirements of ultra-low-expansion glass ceramic.
Increase Li in the above-mentioned prescription 2O, ZrO 2Can adjust coring, crystallization performance, MgO, P 2O 5The transparency of improving glass is beneficial to.
Adopt above-mentioned prescription to make ultra-low-expansion glass ceramic V 02The time, at first adopt new proportioning process that each component is mixed, adopt the high melt Technology, in high temperature resistant quartz ceramic crucible, found through 1580~1630 ℃, come out of the stove for 1450 ℃, moulding, check is again through 660~690 ℃ of coring, through 690~720 ℃ of crystallization, 640~540 ℃ of fine annealings.
Embodiment
The present invention is further described with embodiment below.
The component of embodiments of the invention 1~5, processing parameter, performance perameter such as following table are listed:
Component Technical parameter Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5
SiO 2 (weight part) 48.53 48.44 47.2 47.7 49.1
Al 2O 3 (weight part) 27.8 27.89 29.0 28.84 27.6
Sb 2O 3 (weight part) 0.81 0.82 0.78 0.80 0.80
As 2O 3 (weight part) 0.30 0.32 0.32 0.32 0.35
BaO (weight part) 3.03 3.05 3.01 3.00 3.00
ZnO (weight part) 2.03 2.05 2.02 2.01 2.00
CaO (weight part) 2.33 2.32 2.32 2.29 2.28
MgO (weight part) 0.50 0.59 0.58 0.83 1.0
Li 2O (weight part) 7.49 7.50 7.44 7.10 7.20
P 2O 5 (weight part) 4.23 4.06 4.40 4.01 4.00
ZrO 2 (weight part) 1.46 1.46 1.45 1.70 1.20
TiO 2 (weight part) 1.49 1.50 1.48 1.40 1.47
Add up to (weight part) 100.00 100.00 100.00 100.00 100.00
Charge temperature (℃) 1480 1480 1460 1460 1500
Glass melting temperature (℃) 1620 1620 1620 1620 1630
Tapping temperature (℃) 1450 1450 1450 1450 1450
Nucleation temperature (℃) 680 680 670 680 690
Crystallization temperature (℃) 700 700 710 715 720
Annealing temperature (℃) 650 650 650 650 650
The coefficient of expansion (* 10 -7/℃) (-50~60℃) 0.5 0.3 0.7 0.6 1.0
Adopt above-mentioned prescription to make ultra-low-expansion glass ceramic V 02The time, at first each component is mixed, adopt the high melt Technology, in high temperature resistant quartz ceramic crucible, found through 1580~1630 ℃, come out of the stove for 1450 ℃, moulding, check, again through 660~690 ℃ of coring, through 690~720 ℃ of crystallization, 640~540 ℃ of fine annealings.
The above embodiment of the present invention manufacturing process program is basic identical, just selects recipe ingredient slightly different, and main purpose is in order to adjust coring, crystallization performance and the coefficient of expansion.Above embodiment all founds in 4500ml quartz ceramic crucible molybdenum bar electric furnace, pouring technology is adopted in moulding, coring, crystallization, annealing are carried out in accurate crystallization furnace, annealing process: 650 ℃ are incubated 3 hours, drop to 400 ℃ with 10 ℃/hour, powered-down is cooled to room temperature, the inner quality of sight glass, the resampling product carry out the test of the coefficient of expansion.
Can go into operation 50L electric furnace and 8 tons of pneumoelectrics heating tank furnaces of this trade mark are produced in batches.
The chemical feedstocks explanation:
SiO 2Silicon oxide
Al 2O 3Aluminum oxide
Sb 2O 3Weisspiessglanz
As 2O 3Arsenic oxide arsenoxide
BaO barium oxide
ZnO zinc oxide
The CaO calcium oxide
MgO magnesium oxide
Li 2The O Lithium Oxide 98min
P 2O 5Vanadium Pentoxide in FLAKES
ZrO 2Zirconium white
TiO 2Titanium oxide

Claims (2)

1, a kind of ultra-low-expansion glass ceramic is characterized in that: Liang component is SiO by weight percentage 2-47.2-49.1, Al 2O 3-27.6-29.0, Sb 2O 3-0.78-0.82, As 2O 3-0.30-0.35, BaO-2.98-3.05, ZnO-2.00-2.05, CaO-2.28-2.33, MgO-0.5-1.0, Li 2O-7.1-7.5, P 2O 5-4.0-4.4, ZrO 2-1.2-1.7, TiO 2-1.4-1.5.
2, a kind of production technique of ultra-low-expansion glass ceramic, at first each component is mixed, adopt the high melt Technology, in high temperature resistant quartz ceramic crucible, found through 1580~1630 ℃, come out of the stove for 1450 ℃, moulding, check is again through 660~690 ℃ of coring, through 690~720 ℃ of crystallization, 640~540 ℃ of fine annealings; Pouring technology is adopted in moulding, and annealing process is carried out in coring, crystallization, annealing in accurate crystallization furnace: 650 ℃ of insulations 3 hours, drop to 400 ℃ with 10 ℃/hour, and powered-down is cooled to room temperature and takes out glass.
CNA2005100250953A 2005-04-14 2005-04-14 Ultralow thermal expansion devitrified glass Pending CN1847182A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2005100250953A CN1847182A (en) 2005-04-14 2005-04-14 Ultralow thermal expansion devitrified glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2005100250953A CN1847182A (en) 2005-04-14 2005-04-14 Ultralow thermal expansion devitrified glass

Publications (1)

Publication Number Publication Date
CN1847182A true CN1847182A (en) 2006-10-18

Family

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Country Status (1)

Country Link
CN (1) CN1847182A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101857373A (en) * 2010-06-03 2010-10-13 香港福山实业有限公司 A glass-ceramic tube and its preparation method
CN102503102A (en) * 2011-09-29 2012-06-20 中国航空工业第六一八研究所 A super-stabilizing treatment method for ultra-low expansion glass-ceramic
CN110217985A (en) * 2019-07-04 2019-09-10 广东科迪微晶玻璃实业有限公司 A kind of production method of low-expansion coefficient transparent glass-ceramics and its product
CN111807706A (en) * 2020-06-29 2020-10-23 成都光明光电股份有限公司 Glass ceramics and glass ceramics product
CN111943514A (en) * 2020-06-29 2020-11-17 成都光明光电股份有限公司 Glass-ceramic and glass-ceramic article

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101857373A (en) * 2010-06-03 2010-10-13 香港福山实业有限公司 A glass-ceramic tube and its preparation method
CN102503102A (en) * 2011-09-29 2012-06-20 中国航空工业第六一八研究所 A super-stabilizing treatment method for ultra-low expansion glass-ceramic
CN102503102B (en) * 2011-09-29 2014-12-24 中国航空工业第六一八研究所 Ultra-low expansion glass ceramic ultra-stabilization treatment method
CN110217985A (en) * 2019-07-04 2019-09-10 广东科迪微晶玻璃实业有限公司 A kind of production method of low-expansion coefficient transparent glass-ceramics and its product
CN111807706A (en) * 2020-06-29 2020-10-23 成都光明光电股份有限公司 Glass ceramics and glass ceramics product
CN111943514A (en) * 2020-06-29 2020-11-17 成都光明光电股份有限公司 Glass-ceramic and glass-ceramic article
CN114671619A (en) * 2020-06-29 2022-06-28 成都光明光电股份有限公司 Glass ceramics and glass ceramics product
CN114671619B (en) * 2020-06-29 2023-12-05 成都光明光电股份有限公司 Glass ceramics and glass ceramics products

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Open date: 20061018