WO2007078266A1 - Ceramic bonding of the glassy-crystalline units - Google Patents

Ceramic bonding of the glassy-crystalline units Download PDF

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Publication number
WO2007078266A1
WO2007078266A1 PCT/UA2006/000045 UA2006000045W WO2007078266A1 WO 2007078266 A1 WO2007078266 A1 WO 2007078266A1 UA 2006000045 W UA2006000045 W UA 2006000045W WO 2007078266 A1 WO2007078266 A1 WO 2007078266A1
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WO
WIPO (PCT)
Prior art keywords
glassy
units
bonding
crystalline
crystalline units
Prior art date
Application number
PCT/UA2006/000045
Other languages
French (fr)
Inventor
Volodymyr Petrovich Maslov
Original Assignee
Volodymyr Petrovich Maslov
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 Volodymyr Petrovich Maslov filed Critical Volodymyr Petrovich Maslov
Priority to EP06769741A priority Critical patent/EP1973857A4/en
Publication of WO2007078266A1 publication Critical patent/WO2007078266A1/en

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Classifications

    • 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
    • C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
    • C03C27/06—Joining glass to glass by processes other than fusing
    • C03C27/08—Joining glass to glass by processes other than fusing with the aid of intervening metal
    • 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
    • C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
    • C03C27/06—Joining glass to glass by processes other than fusing

Definitions

  • the proposed invention concerns the structural bonding of glassy-crystalline units, which coefficient of thermal expansion (CTE) is closed to zero. It could be used at the enterprises of optical industry for manufacturing, as an example, the light-weight precise mirrors consisted of separate elements.
  • CTE coefficient of thermal expansion
  • the method of units bonding through optical contact is known [1] .
  • the polished optical surfaces are cleaned from grease and dust, then they are kept close and the refuses of air are pressed out.
  • the strength of such bonding could be improved due to additional heat treatment, SiO 2 film being preliminary deposited at least at one of the contacting surfaces [2] .
  • the heating and cooling rates depend on the size and physical properties of the material of units.
  • the disadvantage of the known prototypes consists in the fact that bonding of units is not consistently possesses high durability because of the edge imperfections .
  • the usable model of the light-weight glassy-crystalline mirror, which elements are bonded by the aluminum layer 0.2- 0.07 ⁇ m thick is the most advisable engineering solution that is considered here as prototype [3] . It provides high structural durability of mirror due to chemical interaction of aluminum with the surface of glassy-crystalline elements.
  • the disadvantage of prototype is the onset of elastic stresses during bonding and subsequent operation under the conditions of temperature fluctuations. These stresses influence the durability characteristics and the geometric parameters (deviation from planarity, angle errors, etc.) of the optical units. They are conditioned by the difference in CTE values of the aluminum layer and the material of bonding elements .
  • the aim of the proposed engineering solution is reducing the stresses in the construction.
  • This task is solved due to the created bonding module for the glassy-crystalline units, which are connected by aluminum layer.
  • the distinctive feature of this module is the using of contact layer on the base of (Ti-Al) oxide system at the ratio of metal component oxides Ti/Al ranging within 1- 1/3 (in volume units) .
  • the positive effect of the proposed invention is reached due to an essentially lower CTE (as compare to that of aluminum) of the compounds that are formed in a result of interaction of titanium and aluminum oxides in a ratio range listed above. So, the advantage of the proposed engineering solution is the reducing of stresses in the construction.
  • the novelty of the proposed invention is determined by the fact that the bonding layer of (Ti-Al) oxides of the mentioned composition has been never applied.
  • This invention has been realized for model specimens of ZERODUR glass ceramic 30x30x5 mm in size.
  • two layers were deposited on one of the unit's surfaces in vacuum: titanium and aluminum layers with a thickness ratio ranging from 2 to H and total thickness 0,2-0.07 ⁇ m.
  • the parts were put in contact and heat treated at 300-600 °C in order to provide the diffusion bonding.
  • aluminum was solved in titanium. So, the bonding layer was based on Ti-Al system at the ratio of metal components Ti/Al ranging within 1-1/4 (in volume units) .
  • the optimal ratio of the oxides of metal components Ti/Al should be ranged from 1 to 1/3.

Abstract

The proposed invention concerns the structural bonding of glassy-crystalline units, which coefficient of thermal expansion (CTE) is closed to zero. It could be used at the enterprises of optical industry for manufacturing, as an example, the light-weight precise mirrors consisted of separate elements. The aim of .the proposed engineering solution is reducing the stresses in the construction. This task is solved due to the created bonding module for the glassy-crystalline units, which are connected by aluminum layer. The distinctive feature of this module is the using of the contact layer on the base of (Ti-Al) oxide system at the ratio of metal component oxides Ti/Al ranging within 1-1/3 (in volume units) .

Description

CERAMIC BONDING OF THE GLASSY-CRYSTALLINE UNITS
The proposed invention concerns the structural bonding of glassy-crystalline units, which coefficient of thermal expansion (CTE) is closed to zero. It could be used at the enterprises of optical industry for manufacturing, as an example, the light-weight precise mirrors consisted of separate elements.
Currently, the method of units bonding through optical contact is known [1] . Here, the polished optical surfaces are cleaned from grease and dust, then they are kept close and the refuses of air are pressed out. The strength of such bonding could be improved due to additional heat treatment, SiO2 film being preliminary deposited at least at one of the contacting surfaces [2] . The heating and cooling rates depend on the size and physical properties of the material of units.
The disadvantage of the known prototypes consists in the fact that bonding of units is not consistently possesses high durability because of the edge imperfections .
The usable model of the light-weight glassy-crystalline mirror, which elements are bonded by the aluminum layer 0.2- 0.07 μm thick is the most advisable engineering solution that is considered here as prototype [3] . It provides high structural durability of mirror due to chemical interaction of aluminum with the surface of glassy-crystalline elements.
The disadvantage of prototype is the onset of elastic stresses during bonding and subsequent operation under the conditions of temperature fluctuations. These stresses influence the durability characteristics and the geometric parameters (deviation from planarity, angle errors, etc.) of the optical units. They are conditioned by the difference in CTE values of the aluminum layer and the material of bonding elements .
The aim of the proposed engineering solution is reducing the stresses in the construction.
This task is solved due to the created bonding module for the glassy-crystalline units, which are connected by aluminum layer. The distinctive feature of this module is the using of contact layer on the base of (Ti-Al) oxide system at the ratio of metal component oxides Ti/Al ranging within 1- 1/3 (in volume units) .
The positive effect of the proposed invention is reached due to an essentially lower CTE (as compare to that of aluminum) of the compounds that are formed in a result of interaction of titanium and aluminum oxides in a ratio range listed above. So, the advantage of the proposed engineering solution is the reducing of stresses in the construction.
The novelty of the proposed invention is determined by the fact that the bonding layer of (Ti-Al) oxides of the mentioned composition has been never applied.
This invention has been realized for model specimens of ZERODUR glass ceramic 30x30x5 mm in size. The surfaces to be bonded were polished preliminary (N=2-l; ΔN=0.5) . Then, two layers were deposited on one of the unit's surfaces in vacuum: titanium and aluminum layers with a thickness ratio ranging from 2 to H and total thickness 0,2-0.07 μm. The parts were put in contact and heat treated at 300-600 °C in order to provide the diffusion bonding. Here, aluminum was solved in titanium. So, the bonding layer was based on Ti-Al system at the ratio of metal components Ti/Al ranging within 1-1/4 (in volume units) . Then, an additional heat treatment at 900-1000 °C has been performed in order to transform metallic bonding layer into ceramic one consisting of (Ti-Al) oxides. The elastic stresses were controlled by optical polarization method. The durability of the bonding was estimated by the data of mechanical testing.
If the ratio of Ti/Al oxides is higher than 1, the excess of refractory titanium impeded firm bonding, whereas if the ratio of Ti/Al oxides is lower than 1/3, the required low CTE value was not provided. So, the optimal ratio of the oxides of metal components Ti/Al should be ranged from 1 to 1/3.
Reasoning from the originality of engineering solution the author proposes to entitle this invention as "The Maslov' s ceramic bonding of the glassy-crystalline units".
1. Reference book of optical technologies: Leningrad, Mashinostroenie, 1983. -p.362.
2. Optical elements technology. Ed. :M.N. Semibratov: M.: Mashinostroenie, 1978. -p.283.
3.Maslov V. P. The Maslov' s method for glassy-ceramic mirror manufacturing. Application # u 2005 02312 of 14.03.2005. Decision to issue a declarative patent for utility model has been approved on May 12, 2005.

Claims

1. The bonding module for the glassy-crystalline units, which are connected by aluminum layer, that differs by using of the contact layer on the base of (Ti-Al) oxide system at the ratio of metal component oxides Ti/Al ranging within 1- 1/3 (in volume units) .
PCT/UA2006/000045 2006-01-06 2006-07-17 Ceramic bonding of the glassy-crystalline units WO2007078266A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06769741A EP1973857A4 (en) 2006-01-06 2006-07-17 Ceramic bonding of the glassy-crystalline units

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
UAA200600158A UA81510C2 (en) 2006-01-06 2006-01-06 Ceramic joint of details from maslov glass-ceramic materials
UAA200600158 2006-01-06

Publications (1)

Publication Number Publication Date
WO2007078266A1 true WO2007078266A1 (en) 2007-07-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/UA2006/000045 WO2007078266A1 (en) 2006-01-06 2006-07-17 Ceramic bonding of the glassy-crystalline units

Country Status (3)

Country Link
EP (1) EP1973857A4 (en)
UA (1) UA81510C2 (en)
WO (1) WO2007078266A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1439444A (en) * 1973-05-10 1976-06-16 Rca Corp Method ofjoining two preformed glass members by resistance heating of a metal sealing member
DE2923011A1 (en) * 1978-09-18 1980-03-27 Nagema Veb K Bonding together quartz optical elements - via heat and pressure using thin intermediate layer of aluminium
RU2196747C2 (en) * 1999-02-15 2003-01-20 Пикуль Владимир Васильевич Method of composite article manufacture
UA9297U (en) * 2005-03-14 2005-09-15 Volodymyr Petrovych Maslov Method proposed by maslov v.p. for producing a glass-ceramic reflector

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58104047A (en) * 1981-12-14 1983-06-21 Nec Corp Welding method of glass
WO1987006060A1 (en) * 1986-03-28 1987-10-08 Fairchild Semiconductor Corporation Method for joining two or more wafers and the resulting structure
US6806990B2 (en) * 2001-11-22 2004-10-19 Shin-Etsu Chemical Co., Ltd. Optical device and method for producing optical device
JP2005070682A (en) * 2003-08-27 2005-03-17 Kyocera Corp Optical device and its manufacturing method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1439444A (en) * 1973-05-10 1976-06-16 Rca Corp Method ofjoining two preformed glass members by resistance heating of a metal sealing member
DE2923011A1 (en) * 1978-09-18 1980-03-27 Nagema Veb K Bonding together quartz optical elements - via heat and pressure using thin intermediate layer of aluminium
RU2196747C2 (en) * 1999-02-15 2003-01-20 Пикуль Владимир Васильевич Method of composite article manufacture
UA9297U (en) * 2005-03-14 2005-09-15 Volodymyr Petrovych Maslov Method proposed by maslov v.p. for producing a glass-ceramic reflector

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1973857A4 *

Also Published As

Publication number Publication date
EP1973857A4 (en) 2012-07-04
UA81510C2 (en) 2008-01-10
EP1973857A1 (en) 2008-10-01

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