US4957883A
Expired / Lapsed
US
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Oxynitride glass and the fiber thereof
Assignee: Shimadzu Corp
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Filing: 1989-03-06
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Granted: 1990-09-18
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Expires: 2009-03-06
Abstract
Abstract An oxynitride glass, a process for preparing same and a fiber thereof, in the glass which has Si--M 1 --M 2 --O--N system and contains SiO 2 , Si 3 N 4 and M 1 O in amounts which, as mole %, satisfy the following equations (a) and (b): (SiO.sub.2 +3Si.sub.3 N.sub.4 +M.sub.1 O) X 100 / (100+2Si.sub.3 N 4 )=65 to less than 100 (a) (SiO.sub.2 +3Si.sub.3 N.sub.4)/M.sub.1 O=0.7 to 2.3 (b) wherein M 1 is Ca, or Ca and Mg; M 2 is at least one of the metal selected from the group consisting of Al, Sr, La, Ba, Y, Ti, Zr, Ce, Na, K, Sb, B, Cr, Pb, V and Sn, said glass containing 0-40 mole% SiO 2 , 26-70 mole % CaO, 0-20 mole % MgO, and over O to not more than 22 at % M 2 .
Inventors
- 👤 Junya Kobayashi
- 👤 Masaaki Oota
- 👤 Katsuhiko Kada
- 👤 Hiroyoshi Minakuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:34
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/11; C03C13/00; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/022; C03C3/111
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
132 words
An oxynitride glass which has Si--M 1 --M 2 --O N system and contains SiO 2 , Si 3 N 4 and M 1 O in amounts which, as mole %, satisfy the following equations (a) and (b): (SiO.sub.2 +3Si.sub.3 N.sub.4 +M.sub.1 O)×100/(100+2Si.sub.3 N.sub.4)=65 to less than 100 (a) (SiO.sub.2 +3Si.sub.3 N.sub.4)/M.sub.1 O=0.7 to 2.3 (b) wherein M 1 is Ca, or Ca and Mg; M 2 is at least one of the metals selected from the group consisting of Al, Sr, La, Ba, Y, Ti, Zr, Ce, Na, K, Sb, B, Cr, Pb, V and Sn, said glass containing 0-40 mole % SiO 2 , 26-70 mole % CaO, 0-20 mole % MgO, 15-30 at % N 2 and over O to not more than 22 at % M 2 .
Claim 2
Dependent Claim
132 words
An oxynitride glass which has Si--M 1 --M 2 --O N system and contains SiO 2 , Si 3 N 4 and M 1 O in amounts which, as mole %, satisfy the following equations (a) and (b): (SiO.sub.2 +3Si.sub.3 N.sub.4 +M.sub.1 O)×100/(100+2Si.sub.3 N.sub.4)=65 to less than 100 (a) (SiO.sub.2 +3Si.sub.3 N.sub.4)/M.sub.1 O=0.7 to 2.3 (b) wherein M 1 is Ca, or Ca and Mg; M 2 is at least one of the metals selected from the group consisting of Al, Sr, La, Ba, Y, Ti, Zr, Ce, Na, K, Sb, B, Cr, Pb, V and Sn, said glass containing 0-40 mole % SiO 2 , 26-70 mole % CaO, 0-20 mole % MgO, 15-30 at % N 2 and over O to not more than 22 at % M 2 .
Claim 3
Dependent Claim
12 words
An oxynitride glass claimed in claim 1, wherein M 1 is Ca.
Claim 4
Dependent Claim
14 words
An oxynitride glass claimed in claim 1, wherein M 1 is Ca and Mg.
Claim 5
Dependent Claim
131 words
An oxynitride fiber which has Si--M 1 --M 2 --O--N system and contains SiO 2 , Si 3 N 4 and M 1 O in amounts which, as mole %, satisfy the following equation (a) and (b): (SiO.sub.2 +3Si.sub.3 N.sub.4 +M.sub.1 O)×100/(100+2Si.sub.3 N.sub.4)=65 to less than 100 (a) (SiO.sub.2 +3Si.sub.3 N.sub.4)/M.sub.1 O=0.7 to 2.3 (b) wherein M 1 is Ca, or Ca and Mg; M 2 is at least one of the metal selected from the group consisting of Al, Sr, La, Ba, Y, Ti, Zr, Ce, Na, K, Sb, B, Cr, Pb, V and Sn, said glass containing 0-40 mol % SiO 2 , 26-70 mole % CaO, 0-20 mole % MgO, 15-30 at % N 2 and over O to not more than 22 at % M 2 .
Claim 6
Dependent Claim
131 words
An oxynitride fiber which has Si--M 1 --M 2 --O--N system and contains SiO 2 , Si 3 N 4 and M 1 O in amounts which, as mole %, satisfy the following equation (a) and (b): (SiO.sub.2 +3Si.sub.3 N.sub.4 +M.sub.1 O)×100/(100+2Si.sub.3 N.sub.4)=65 to less than 100 (a) (SiO.sub.2 +3Si.sub.3 N.sub.4)/M.sub.1 O=0.7 to 2.3 (b) wherein M 1 is Ca, or Ca and Mg; M 2 is at least one of the metal selected from the group consisting of Al, Sr, La, Ba, Y, Ti, Zr, Ce, Na, K, Sb, B, Cr, Pb, V and Sn, said glass containing 0-40 mol % SiO 2 , 26-70 mole % CaO, 0-20 mole % MgO, 15-30 at % N 2 and over O to not more than 22 at % M 2 .
Claim 7
Dependent Claim
13 words
An oxynitride glass fiber claimed in claim 4, wherein M 1 is Ca.
Claim 8
Dependent Claim
15 words
An oxynitride glass fiber claimed in claim 4, wherein M 1 is Ca and Mg.
Claim 9
Dependent Claim
13 words
An oxynitride glass fiber claimed in claim 4, which diameter is 3-50 μm.
Claim 10
Dependent Claim
19 words
An oxynitride glass fiber claimed in claim 4, which elastic modulus is not less than 12,500 kg/mm 2 .
References Cited (Backward Citations)
US4097295A
Cited
US4609631A
Cited
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