# US 2017/0283318 A1 · Glass bonding material and multilayer glass

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- Number: US 2017/0283318 A1
- Document ID: US20170283318A1
- Status: Published application
- Kind: A1
- Application number: 15/602,569
- Filed: 2017-05-23
- Published: 2017-10-05
- Earliest claimed: 2014-12-02
- Assignees: Hitachi Metals, Ltd.
- Applicants: Hitachi Metals, Ltd.
- Inventors: Masayuki Yokota; Ryoji Inoue; Yoshiharu Tsuboi; Masaharu Yamamoto; Masaru Fujiyoshi; Naruaki Tomita; Kouji Kawahara
- Web page: https://patentgrep.com/patent/US20170283318A1

## CPC

- B23K 35/30: with the principal constituent melting at less than 1550°C
- C03C 27/08: with the aid of intervening metal
- B23K 35/304: {with Cr as the next major constituent}
- B23K 35/3066: {with Ni as next major constituent}
- B32B 15/012: {one layer being formed of an iron alloy or steel, another layer being formed of aluminium or an aluminium alloy}
- B32B 15/04: comprising metal as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a bituminous or tarry layer B32B11/08; next to a water-setting substance layer B32B13/06; next to a glass layer B32B17/061; next to a cellulosic plastic layer B32B23/042)}
- B32B 17/06: comprising glass as the main or only constituent of a layer, next to another layer of a specific {material}
- B32B 17/061: {of metal}
- C03C 27/042: {consisting of a combination of materials selected from glass, glass-ceramic or ceramic material with metals, metal oxides or metal salts}
- C22C 19/058: {without Mo and W}
- C22C 30/00: Alloys containing less than 50% by weight of each constituent
- C22C 38/08: containing nickel {(C22C38/105 takes precedence)}
- C22C 38/105: {containing Co and Ni}
- C22C 38/40: with nickel
- C22C 38/52: with cobalt
- E06B 3/67334: {by soldering; Preparing the panes therefor}
- B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- 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
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C22C: ALLOYS (treatment of alloys C21D, C22F)
- E06B: FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES (shades or blinds for greenhouses A01G9/22; curtains A47H; lids for car boots or bonnets B62D25/10; skylights E04B7/18; sunshades, awnings E04F10/00)

## Abstract

This glass bonding material (21) is made of a cladding material (1) in which at least a first layer (11) made of an Al-based alloy and configured to be bonded to glass and a second layer (12) made of an Fe—Ni based alloy having a thermal expansion coefficient from 30° C. to 400° C. of 11.5×10−6 (K−1) or less are bonded.

## Claims

### Claim 1

A glass bonding material comprising a cladding material in which at least a first layer made of an Al-based alloy and configured to be bonded to glass and a second layer made of an Fe—Ni based alloy having a thermal expansion coefficient from 30° C. to 400° C. of 11.5×10−6 (K−1) or less are bonded.

### Claim 2 (depends on 1)

The glass bonding material according to claim 1, wherein a Young's modulus of the cladding material is 110 GPa or less.

### Claim 3 (depends on 1)

The glass bonding material according to claim 1, wherein
the first layer is configured to be bonded to soda-lime glass via fritted glass as the glass, and
a thermal expansion coefficient X×10−6 (K−1) from 30° C. to 400° C. of the cladding material satisfies a relationship of 7.5≦X≦11.5.

### Claim 4 (depends on 1)

The glass bonding material according to claim 1, wherein
a Young's modulus of the first layer made of the Al-based alloy is smaller than a Young's modulus of the second layer made of the Fe—Ni based alloy, and
a thickness of the first layer is equal to or greater than a thickness of the second layer.

### Claim 5 (depends on 1)

The glass bonding material according to claim 1, wherein
the second layer made of the Fe—Ni based alloy is arranged at a position opposed to a region where the first layer and the glass are bonded in a thickness direction of the cladding material.

### Claim 6 (depends on 1)

The glass bonding material according to claim 1, wherein
the cladding material is made of an overlay type cladding material of a three-layer structure in which the first layer, the second layer, and a third layer are bonded, the third layer being made of an Al-based alloy and bonded to a surface of the second layer opposite to a surface to which the first layer is bonded.

### Claim 7 (depends on 6)

The glass bonding material according to claim 6, wherein
the first layer and the third layer have approximately the same thickness.

### Claim 8 (depends on 1)

The glass bonding material according to claim 1, wherein
the Fe—Ni based alloy constituting the second layer comprises 28 mass % or more and 50 mass % or less of Ni, 0 mass % or more and 20 mass % or less of Co, 0 mass % or more and 8 mass % or less of Cr, and the balance being Fe and inevitable impurity elements.

### Claim 9 (depends on 8)

The glass bonding material according to claim 8, wherein
the Fe—Ni based alloy constituting the second layer contains 4 mass % or more and 8 mass % or less of Cr.

### Claim 10 (depends on 1)

The glass bonding material according to claim 1, wherein
the Al based alloy constituting the first layer contains 99.0 mass % or more of Al.

### Claim 11 (depends on 1)

The glass bonding material according to claim 1, wherein
the glass bonding material is used for a sealing part of a vacuum multilayer glass.

### Claim 12 (depends on 2)

The glass bonding material according to claim 2, wherein
a Young's modulus of the cladding material is 85 GPa or more and 100 GPa or less.

### Claim 13 (depends on 4)

The glass bonding material according to claim 4, wherein
the thickness of the first layer is twice or more the thickness of the second layer.

### Claim 14 (depends on 1)

The glass bonding material according to claim 1, wherein
the second layer is not arranged at a position facing a region where the first layer and the glass are not bonded but is arranged at a position opposed to a region where the first layer and the glass are bonded.

### Claim 15 (depends on 14)

The glass bonding material according to claim 14, wherein
the first layer is arranged both in the region where the first layer and the glass are bonded and in the region where the first layer and the glass are not bonded.

### Claim 16 (depends on 1)

The glass bonding material according to claim 1, wherein
a Young's modulus of the first layer made of the Al-based alloy is smaller than a Young's modulus of the second layer made of the Fe—Ni based alloy, and
the second layer is arranged on a surface opposite to a region where the first layer and the glass are bonded at a position facing the region where the first layer and the glass are bonded.

### Claim 17 (depends on 1)

The glass bonding material according to claim 1, wherein
the cladding material includes a pair of parallel parts provided in a region where the first layer and the glass are bonded and extending approximately parallel to a bonding surface of a member to which the glass is bonded, and an inclined portion extending in an inclined state with respect to the bonding surface so as to connect the pair of parallel parts.

### Claim 18

A multilayer glass in which a plurality of glass plates are arranged with a gap therebetween and a periphery of the plurality of glass plates is bonded by a sealing part, wherein
the sealing part includes a glass bonding material made of a cladding material in which at least a first layer made of an Al-based alloy and configured to be bonded to glass and a second layer made of an Fe—Ni based alloy in which a thermal expansion coefficient from 30° C. to 400° C. is 11.5×10−6 (K−1) or less are bonded.

### Claim 19 (depends on 18)

The multilayer glass according to claim 18, wherein
the sealing part is formed by bonding fritted glass and the glass bonding material.

### Claim 20 (depends on 18)

The multilayer glass according to claim 18, wherein
the gap is lowered in pressure.