US5015909A
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Glass composition and method for manufacturing a high performance microchannel plate
Assignee: Gyrus ACMI Inc
•
Filing: 1989-12-29
•
Granted: 1991-05-14
•
Expires: 2009-12-29
Abstract
Abstract A glass composition consisting essentially of the following components present in the glass in the following mole percent ranges is shown: CHART I ______________________________________ CHEMICAL COMPOSITION RANGES mole percent ______________________________________ SiO 2 58-68 Al 2 O 3 0-2 K 2 O + Rb 2 O + Cs 2 O 0-3 PbO 10-15 Bi 2 O 3 0.3-2.1 MgO + CaO + BaO 10-20.4 B 2 O 3 0-4 As 2 O 3 + Sb 2 O 0.1-1.1 ______________________________________ A glass composition for manufacturing a high performance microchannel plate is also shown. A microchannel plate made from a glass composition consisting essentially of components in the glass range as defined above is also shown. A method for making a non-porous glass tubing comprising a hollowed out central area and having a transformation temperature in range of about 570° C. to about 610° C., a liquidus temperature below 1000° C. wherein the composition consists essentially of the components described herein above and wherein the glass tubing has an average lineal coefficient of thermal expansion in the range of about 63×10 -7 per °C. to about 82×10 -7 per °C. at a temperature between 25° C. and 300° C. is shown.
Inventors
- 👤 William J. S. Zhong
- 👤 John A. Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:54
CPC Classifications
H; H01; H01J; H01J43/00; H01J43/04; H01J43/06; H01J43/18; H01J43/24; H01J43/246; C; C03; C03C; C03C3/00; C03C3/04; C03C3/062; C03C3/064; C03C3/068; C03C3/076; C03C3/095; C03C3/102; C03C3/108; G; G02; G02B; G02B6/00; G02B6/04; G02B6/06; G02B6/08
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
37 words
A glass composition comprising the following components present in the glass in the following mole percent ranges: ______________________________________
SiO.sub.2
58-68
PbO 10-15
Bi.sub.2 O.sub.3
0.3-2.1
B.sub.2 O.sub.3
2.0-3.8
Al.sub.2 O.sub.3
0.9-1.2
BaO 5.5-16.2
Cs.sub.2 O
0.0-1.9.
______________________________________
Claim 2
Dependent Claim
37 words
A glass composition comprising the following components present in the glass in the following mole percent ranges: ______________________________________
SiO.sub.2
58-68
PbO 10-15
Bi.sub.2 O.sub.3
0.3-2.1
B.sub.2 O.sub.3
2.0-3.8
Al.sub.2 O.sub.3
0.9-1.2
BaO 5.5-16.2
Cs.sub.2 O
0.0-1.9.
______________________________________
Claim 3
Dependent Claim
39 words
The glass composition of claim 1 further containing at least one component selected from the group consisting of MgO and CaO, the total amount of which together with BaO are present in the glass in mole percent of 10-20.4.
Claim 4
Dependent Claim
44 words
The glass composition of claim 1 further containing at least one compound selected from the group consisting of Rb 2 O and K 2 O, the total of which together with Cs 2 O are present in the glass in mole percent of 0-3.
Claim 5
Dependent Claim
35 words
The glass composition of claim 1 further containing Sb 2 O 3 and wherein the components Sb 2 O 3 and As 2 O 3 are present in the glass in mole percent of 0.1-1.1.
Claim 6
Dependent Claim
23 words
The glass composition of claim 1 further containing Sb 2 O 3 which is present in the glass in mole percent of 0-0.5.
Claim 7
Dependent Claim
23 words
The glass composition of claim 1 further containing As 2 O 3 which is present in the glass in mole percent of 0-0.6.
Claim 8
Dependent Claim
23 words
The glass composition of claim 2 further consisting of Rb 2 O which is present in the glass in mole percent of 0-0.5.
Claim 9
Dependent Claim
23 words
The glass composition of claim 7 further consists of K 2 O which is present in the glass in mole percent of 0-3.0.
Claim 10
Dependent Claim
29 words
The glass composition of claim 8 wherein the components Cs 2 O, Rb 2 O and K 2 O are present in the glass in mole percent of 0-3.
Claim 11
Dependent Claim
51 words
A glass composition of claim 1 wherein the glass consists of approximately the following composition in mole percent: ______________________________________
SiO.sub.2
63.0
PbO 11.4
Bi.sub.2 O.sub.3
0.5
B.sub.2 O.sub.3
3.6
Al.sub.2 O.sub.3
1.1
BaO 12.0
Cs.sub.2 O
1.2
Sb.sub.2 O.sub.3
0.1
As.sub.2 O.sub.3
0.2
Rb.sub.2 O
0.4
CaO 4.3
MgO 2.2
______________________________________
Claim 12
Dependent Claim
51 words
A glass composition of claim 1 wherein the glass consists approximately of the following composition in mole percent: ______________________________________
SiO.sub.2
62.1
PbO 12.0
Bi.sub.2 O.sub.3
0.3
B.sub.2 O.sub.3
3.3
Al.sub.2 O.sub.3
0.9
BaO 12.8
Cs.sub.2 O
1.7
Sb.sub.2 O.sub.3
0.1
As.sub.2 O.sub.3
0.4
Rb.sub.2 O
0.5
CaO 3.0
MgO 3.0
______________________________________
Claim 13
Dependent Claim
69 words
A microchannel plate comprising substantially parallel surfaces wherein a plurality of glass fibers are fused together, and the cores thereof etched, and extend between said parallel surfaces, said glass fibers being made from a glass composition comprising the following components in the glass in the following mole percent ranges: ______________________________________
SiO.sub.2
58-68
PbO 10-15
Bi.sub.2 O.sub.3
0.3-2.1
B.sub.2 O.sub.3
2.0-3.8
Al.sub.2 O.sub.3
0.9-1.2
BaO 5.5-16.2
Cs.sub.2 O
0.0-1.9.
______________________________________
Claim 14
Dependent Claim
69 words
A microchannel plate comprising substantially parallel surfaces wherein a plurality of glass fibers are fused together, and the cores thereof etched, and extend between said parallel surfaces, said glass fibers being made from a glass composition comprising the following components in the glass in the following mole percent ranges: ______________________________________
SiO.sub.2
58-68
PbO 10-15
Bi.sub.2 O.sub.3
0.3-2.1
B.sub.2 O.sub.3
2.0-3.8
Al.sub.2 O.sub.3
0.9-1.2
BaO 5.5-16.2
Cs.sub.2 O
0.0-1.9.
______________________________________
Claim 15
Dependent Claim
43 words
The microchannel plate of claim 12 wherein the glass composition further contains at least one component selected from the group consisting of MgO and CaO, the total amount of which together with BaO are present in like glasses in mole percent of 10-20.4.
Claim 16
Dependent Claim
48 words
The microchannel plate of claim 13 wherein the glass composition further contains at least one compound selected from the group consisting of Rb 2 O and K 2 O, the total of which together with Cs 2 O are present in the glass in mole percent of 0-3.
Claim 17
Dependent Claim
31 words
The microchannel plate of claim 13 wherein the glass composition further contains the components Sb 2 O 2 and As 2 O 3 in the glass in mole percent of 0.1-1.1.
Claim 18
Dependent Claim
27 words
The microchannel plate of claim 13 wherein the glass composition further contains Sb 2 O 3 which is present in the glass in mole percent of 0-0.5.
Claim 19
Dependent Claim
27 words
The microchannel plate of claim 13 wherein the glass composition further contains As 2 O 3 which is present in the glass in mole percent of 0-0.6.
Claim 20
Dependent Claim
26 words
The microchannel plate of claim 14 wherein the glass composition further contains Rb 2 O which is present in the glass in mole percent of 0-0.5.
Claim 21
Dependent Claim
27 words
The microchannel plate of claim 18 wherein the glass composition further consists of K 2 O which is present in the glass in mole percent of 0-3.0.
Claim 22
Dependent Claim
29 words
The microchannel plate of claim 19 wherein the components Cs 2 O, Rb 2 O and K 2 O are present in the glass in mole percent of 0-3.0.
Claim 23
Dependent Claim
74 words
A microchannel plate comprising substantially parallel surfaces wherein a plurality of glass fibers are fused together and extend between said parallel surfaces, said glass fibers being made from a glass composition comprising the following components in the glass in the following mole percent ranges: ______________________________________
SiO.sub.2 58-68
PbO 10-15
Bi.sub.2 O.sub.3 0.3-2.1
B.sub.2 O.sub.3 2.0-3.8
Al.sub.2 O.sub.3 0.9-1.2
MgO + CaO + BaO 10-20.4
Cs.sub.2 O 0.0-1.9
As.sub.2 O.sub.3 + Sb.sub.2 O.sub.3
0.1-1.1.
______________________________________
Claim 24
Dependent Claim
74 words
A microchannel plate comprising substantially parallel surfaces wherein a plurality of glass fibers are fused together and extend between said parallel surfaces, said glass fibers being made from a glass composition comprising the following components in the glass in the following mole percent ranges: ______________________________________
SiO.sub.2 58-68
PbO 10-15
Bi.sub.2 O.sub.3 0.3-2.1
B.sub.2 O.sub.3 2.0-3.8
Al.sub.2 O.sub.3 0.9-1.2
MgO + CaO + BaO 10-20.4
Cs.sub.2 O 0.0-1.9
As.sub.2 O.sub.3 + Sb.sub.2 O.sub.3
0.1-1.1.
______________________________________
Claim 25
Dependent Claim
40 words
The microchannel plate of claim 21 wherein glass composition comprises the following composition in mole percent: ______________________________________
SiO.sub.2 63.0
PbO 11.4
Bi.sub.2 O.sub.3 0.5
B.sub.2 O.sub.3 3.6
Al.sub.2 O.sub.3 1.1
BaO + MgO + CaO 18.6
Cs.sub.2 O 1.2
______________________________________
Claim 26
Dependent Claim
140 words
A shaped non-porous glass tubing comprising a hollowed out central area, said glass tubing being formed of a glass composition having a transformation temperature in the range of about 570° C. to about 610° C. and a liquidus temperature below 1000° C., said glass having a composition comprising the following components, present in the glass, in the following mole percent: ______________________________________
SiO.sub.2 58-68
PbO 10-15
Bi.sub.2 O.sub.3 0.3-2.1
B.sub.2 O.sub.3 2.0-3.8
Al.sub.2 O.sub.3 0.9-1.2
BaO + MgO + CaO 5.5-16.2
Cs.sub.2 O 0.0-1.9
______________________________________ wherein the total mole percent of SiO 2 +PbO+BaO is in the range of about 78 to about 90 and wherein said glass tubing has an average lineal coefficient of thermal expansion in the range of about 63×10 -7 per °C. to about 82×10 -7 per °C. at a temperature between 25° C. and 300° C.
Claim 27
Dependent Claim
140 words
A shaped non-porous glass tubing comprising a hollowed out central area, said glass tubing being formed of a glass composition having a transformation temperature in the range of about 570° C. to about 610° C. and a liquidus temperature below 1000° C., said glass having a composition comprising the following components, present in the glass, in the following mole percent: ______________________________________
SiO.sub.2 58-68
PbO 10-15
Bi.sub.2 O.sub.3 0.3-2.1
B.sub.2 O.sub.3 2.0-3.8
Al.sub.2 O.sub.3 0.9-1.2
BaO + MgO + CaO 5.5-16.2
Cs.sub.2 O 0.0-1.9
______________________________________ wherein the total mole percent of SiO 2 +PbO+BaO is in the range of about 78 to about 90 and wherein said glass tubing has an average lineal coefficient of thermal expansion in the range of about 63×10 -7 per °C. to about 82×10 -7 per °C. at a temperature between 25° C. and 300° C.
Claim 28
Dependent Claim
45 words
The shaped non-porous glass tubing of claim 23 wherein said glass composition further contains at least one component selected from the group consisting of MgO and CaO, the total amount of which together with BaO are present in the glass in mole percent of 10-20.4.
Claim 29
Dependent Claim
50 words
The shaped non-porous glass tubing of claim 23 wherein said glass composition further contains at least one compound selected from the group consisting of Rb 2 O and K 2 O, the total of which together with Cs 2 O are present in the glass in mole percent of 0-3.
Claim 30
Dependent Claim
32 words
The shaped non-porous glass tubing of claim 23 wherein the glass composition components Sb 2 O 3 and As 2 O 3 are present in the glass in mole percent of 0.1-1.1.
Claim 31
Dependent Claim
29 words
The shaped non-porous glass tubing of claim 23 wherein said glass composition further contains Sb 2 O 3 which is present in the glass in mole percent of 0-0.5.
Claim 32
Dependent Claim
30 words
The shaped non-porous glass tubing of claim 23 wherein said glass composition further contains of As 2 O 3 which is present in the glass in mole percent of 0-0.6.
Claim 33
Dependent Claim
28 words
The shaped non-porous glass tubing of claim 24 wherein said glass composition further contains Rb 2 O which is present in the glass in mole percent of 0-0.5.
Claim 34
Dependent Claim
28 words
The shaped non-porous glass tubing of claim 29 wherein said glass composition further contains K 2 O which is present in the glass in mole percent of 0-3.0.
Claim 35
Dependent Claim
29 words
The glass composition of claim 8 wherein the components Cs 2 O, Rb 2 O and K 2 O are present in the glass in mole percent of 0-3.
Claim 36
Dependent Claim
78 words
A glass composition comprising the following components present in the glass in the following mole percent ranges: ______________________________________
SiO.sub.2
35-43
B.sub.2 O.sub.3
22-28
CaO 0-6.5
BaO 20-32
ZnO 0-3
Y.sub.2 O.sub.3
0-1.4
As.sub.2 O.sub.3
0.5-0.6
Sb.sub.2 O.sub.3
0.4-0.6
Re.sub.2 O.sub.3
2.3-10.4
______________________________________ wherein the Re 2 O 3 comprises any one or more of the Lanthanum Group earth oxides, the total mole percent of which is within the above mole percent ranges for Re 2 O 3 .
Claim 37
Dependent Claim
78 words
A glass composition comprising the following components present in the glass in the following mole percent ranges: ______________________________________
SiO.sub.2
35-43
B.sub.2 O.sub.3
22-28
CaO 0-6.5
BaO 20-32
ZnO 0-3
Y.sub.2 O.sub.3
0-1.4
As.sub.2 O.sub.3
0.5-0.6
Sb.sub.2 O.sub.3
0.4-0.6
Re.sub.2 O.sub.3
2.3-10.4
______________________________________ wherein the Re 2 O 3 comprises any one or more of the Lanthanum Group earth oxides, the total mole percent of which is within the above mole percent ranges for Re 2 O 3 .
Claim 38
Dependent Claim
18 words
The glass composition of claim 27 wherein the Re 2 O 3 has a mole percent of 10.4.
Claim 39
Dependent Claim
18 words
The glass composition of claim 27 wherein the Re 2 O 3 has a mole percent of 2.3.
Claim 40
Dependent Claim
18 words
The glass composition of claim 27 wherein the Re 2 O 3 has a mole percent of 5.7.
Claim 41
Dependent Claim
102 words
A core glass for use in manufacturing a high performance microchannel plate, said core glass being formed of a glass composition comprising the following composition in mole percent ranges: ______________________________________
SiO.sub.2
35-43
B.sub.2 O.sub.3
22-28
CaO 0-6.5
BaO 20-32
ZnO 0-3
Y.sub.2 O.sub.3
0-1.4
As.sub.2 O.sub.3
0.5-0.6
Sb.sub.2 O.sub.3
0.4-0.6
Re.sub.2 O.sub.3
2.3-10.4
______________________________________ wherein the Re 2 O 3 comprises any one or more of the Lanthanum Group earth oxides, the total mole percent of which is within the above mole percent ranges for Re 2 O 3 , said core glass being in the form of a chemically etchable rod.
Claim 42
Dependent Claim
102 words
A core glass for use in manufacturing a high performance microchannel plate, said core glass being formed of a glass composition comprising the following composition in mole percent ranges: ______________________________________
SiO.sub.2
35-43
B.sub.2 O.sub.3
22-28
CaO 0-6.5
BaO 20-32
ZnO 0-3
Y.sub.2 O.sub.3
0-1.4
As.sub.2 O.sub.3
0.5-0.6
Sb.sub.2 O.sub.3
0.4-0.6
Re.sub.2 O.sub.3
2.3-10.4
______________________________________ wherein the Re 2 O 3 comprises any one or more of the Lanthanum Group earth oxides, the total mole percent of which is within the above mole percent ranges for Re 2 O 3 , said core glass being in the form of a chemically etchable rod.
Claim 43
Dependent Claim
21 words
The core glass of claim 36 wherein the glass composition component Re 2 O 3 has a mole percent of 10.4.
Claim 44
Dependent Claim
21 words
The core glass of claim 36 wherein the glass composition component Re 2 O 3 has a mole percent of 2.3
Claim 45
Dependent Claim
21 words
The core glass of claim 36 wherein the glass composition component Re 2 O 3 has a mole percent of 5.7.
References Cited (Backward Citations)
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