Browse Prior Art Database

Glass Composition

IP.com Disclosure Number: IPCOM000078941D
Original Publication Date: 1973-Apr-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Foster, BJ: AUTHOR [+2]

Abstract

Low-expansion low-firing non lead solder glasses suitable for a wide variety of applications particularly gas displays, comprise the following compositions:. Type A Type B Type C Type D Type E Range SiO(2) 33 40 50 46 36.5 33-46 B(2)O(3) 20 16 22 20 18 16-22 Al(2)O(3) 24 30 10 17 27 10-27 Na(2)O 4 0 0 0 2 0-4 Li(2)O 8 12 8 10 10 8-12 MgO 8 0 0 0 4 0-8 V(2)O(5) 3 2 3 2 2.5 2-3 Bi(2)O(3) 0 0 4 3 0 0-4 TiO(2) 0 0 3 2 0 0-3 TCE, glass: 83.2 80.1 65.1 74.1 81.7 TCE, cryst.:40-44 19 + 2 29-65 35 32 Temp.cryst:620-660 620-660 610-650 630 620 These glasses can be formed into slurries as follows: 1) Preparing the glass (as per vitreous glass) by melting raw material oxides. 2) Grinding the glass cullet to -325 mesh. 3) Suspending the glass in terpineol in proportion of about 60% glass and 40% terpineol.

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Glass Composition

Low-expansion low-firing non lead solder glasses suitable for a wide variety of applications particularly gas displays, comprise the following compositions:.

Type A Type B Type C Type D Type E Range SiO(2) 33 40 50 46 36.5 33-46
B(2)O(3) 20 16 22 20 18 16-22 Al(2)O(3) 24 30 10 17 27 10-27 Na(2)O 4 0 0 0 2 0-4
Li(2)O 8 12 8 10 10 8-12
MgO 8 0 0 0 4 0-8
V(2)O(5) 3 2 3 2 2.5 2-3
Bi(2)O(3) 0 0 4 3 0 0-4
TiO(2) 0 0 3 2 0 0-3
TCE, glass: 83.2 80.1 65.1 74.1 81.7 TCE, cryst.:40-44 19 + 2 29-65 35 32 Temp.cryst:620-660 620-660 610-650 630 620 These glasses can be formed into slurries as follows:
1) Preparing the glass (as per vitreous glass) by melting

raw material oxides.
2) Grinding the glass cullet to -325 mesh.
3) Suspending the glass in terpineol in proportion of about

60% glass and 40% terpineol.
4) Spraying the glass slurry on heat resistant glass panels

to a green thickness of about 3 mils on each. and,
5) Drying the slurry at 125 degrees C. to 150 degrees C. for

at least fifteen

minutes.

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