Claims
- 1. A heat-generating composition comprising:
- an electrically conductive powder;
- and a crystallizable glass frit wherein the weight ratio of said electrically conductive powder to said crystallizable glass frit is from about 30:70 to about 95:5; and
- said crystallizable glass frit, which is essentially crystallized during sintering, has the following ingredients:
- ______________________________________M.sup.II O = about 25 to about 45 weight percentB.sub.2 O.sub.3 = about 20 to about 60 weight percentM.sup.III '.sub.2 O.sub.3 = about 1 to about 5 weight percentM.sup.I.sub.2 O = about 0 to about 5 weight percentSiO.sub.2 = about 2 to about 10 weight percentAl.sub.2 O.sub.3 = about 2 to about 10 weight percentBi.sub.2 O.sub.3 = about 0 to about 10 weight percentNuclear-forming agent = about 0 to about 20 weight percent______________________________________
- M.sup.I is one or more alkali metals selected from the group consisting of Li, Na, K, Rb, and Cs;
- M.sup.II is one or more alkaline-earth metals selected from the group consisting of Mg, Ca, Sr, and Ba;
- M.sup.III is one or more elements selected from the group consisting of scandium, yttrium, and lanthanide;
- a lanthanide is an element from the periodic table of elements in the range of from lanthanum (La) to lutetium (Lu);
- the nuclear-forming agent is one or more agents selected from the group consisting of TiO.sub.2, ZrO.sub.2, P.sub.2 O.sub.5, SnO.sub.2, ZnO, MoO.sub.3, Ta.sub.2 O.sub.5, Nb.sub.2 O.sub.5, and As.sub.2 O.sub.3.
- 2. The heat-generating composition according to claim 1, in which said electrically conductive powder includes at least one selected from the group consisting of molybdenum silicide, titanium silicide, tungsten silicide, nickel silicide, manganese silicide, tantalum silicide, silicon carbide, molybdenum carbide, and molybdenum boride.
- 3. The heat-generating composition according to claim 1, in which the weight percent of Bi.sub.2 O.sub.3 in said crystallizable glass frit is from about 1 to about 10.
- 4. The heat-generating composition according to claim 3, wherein said electrically conductive powder includes at least one selected from the group consisting of molybdenum silicide, titanium silicide, tungsten silicide, nickel silicide, manganese silicide, tantalum silicide, silicon carbide, molybdenum carbide, and molybdenum boride.
- 5. A heat-generating composition comprising:
- an electrically conductive powder;
- and a crystallizable glass frit wherein the weight ratio of said electrically conductive powder to said crystallizable glass frit is from about 30:70 to about 95:5; and
- said crystallizable glass frit, which is essentially crystallized during sintering, has the following ingredients:
- ______________________________________M.sup.II O = about 25 to about 45 weight percentB.sub.2 O.sub.3 = about 20 to about 60 weight percentM.sup.III.sub.2 O.sub.3 = about 0 to about 5 weight percentM.sup.I.sub.2 O = about 0 to about 5 weight percentSiO.sub.2 = about 2 to about 10 weight percentAl.sub.2 O.sub.3 = about 2 to about 10 weight percentBi.sub.2 O.sub.3 = about 1 to about 10 weight percentNuclear-forming agent = about 0 to about 20 weight percent______________________________________
- M.sup.I is one or more alkali metals selected from the group consisting of Li, Na, K, Rb, and Cs;
- M.sup.II is one or more alkaline-earth metals selected from the group consisting of Mg, Ca, Sr, and Ba;
- M.sup.III is one or more elements selected from the group consisting of scandium, yttrium, and lanthanide;
- a lanthanide is an element from the periodic table of elements in the range of from lanthanum (La) to lutetium (Lu);
- the nuclear-forming agent is one or more agents selected from the group consisting of TiO.sub.2, ZrO.sub.2, P.sub.2 O.sub.5, SnO.sub.2, ZnO, MoO.sub.3, Ta.sub.2 O.sub.5, Nb.sub.2 O.sub.5, and As.sub.2 O.sub.3.
- 6. The heat-generating composition according to claim 5, in which said electrically conductive powder includes at least one selected from the group consisting of molybdenum silicide, titanium silicide, tungsten silicide, nickel silicide, manganese silicide, tantalum silicide, silicon carbide, molybdenum carbide, and molybdenum boride.
- 7. A heat-generating composition comprising:
- a molybdenum silicide as an electrically conductive powder;
- a nickel silicide as an electrically conductive powder;
- a glass frit;
- a weight ratio of said nickel silicide to a total weight of said molybdenum silicide, said nickel silicide, and said glass frit is in a range of from about 5:100 to about 22:100;
- a weight ratio of the sum of said electrically conductive powder to said glass frit is in a range of from about 60:40 to about 75:25;
- a nickel powder as an additive;
- a weight ratio of said nickel powder to a total weight of said molybdenum silicide, said nickel silicide, and said glass frit is in a range of from about 0.1:100 to about 12:100.
- 8. The heat-generating composition according to claim 7, wherein the weight ratio of the nickel silicide to the total weight of the molybdenum silicide, the nickel silicide, and the glass frit is in a range of from about 8:100 to about 18:100.
- 9. The heat-generating composition according to claim 7, wherein the weight ratio of the sum of the electrically conductive powder to the glass frit is in a range of from about 64:36 to about 72:28.
- 10. The heat-generating composition according to claim 7, wherein the weight ratio of the nickel powder to the total weight of the molybdenum silicide, the nickel silicide, and the glass frit is in a range of from about 0.5:100 to about 6:100.
- 11. The heat-generating composition according to claim 7, wherein the weight ratio of the nickel silicide to the total weight of the molybdenum silicide, the nickel silicide, and the glass frit is in a range of from about 8:100 to about 18:100;
- the weight ratio of the sum of the electrically conductive powder to the glass frit is in a range of from about 64:36 to about 72:28;
- the weight ratio of the nickel powder to the total weight of the molybdenum silicide, the nickel silicide, and the glass frit is in a range of from about 0.5:100 to about 6:100.
- 12. The heat-generating composition according to claim 7, wherein the glass frit has the following ingredients:
- ______________________________________M.sup.II O = about 5 to about 50 weight percentB.sub.2 O.sub.3 = about 20 to about 80 weight percentM.sup.III.sub.2 O.sub.3 = about 0 to about 10 weight percentM.sup.I.sub.2 O = about 0 to about 35 weight percentSiO.sub.2 = about 0 to about 40 weight percentAl.sub.2 O.sub.3 = about 0 to about 40 weight percentBi.sub.2 O.sub.3 = about 0 to about 10 weight percentNuclear-forming agent = about 0 to about 20 weight percent______________________________________
- M.sup.I is one or more alkali metals selected from the group consisting of Li, Na, K, Rb, and Cs;
- M.sup.II is one or more alkaline-earth metals selected from the group consisting of Mg, Ca, Sr, and Ba;
- M.sup.III is one or more elements selected from the group consisting of scandium, yttrium, and lanthanide; a lanthanide is a generalized element from the periodic table of elements in the range of from lanthanum (La) to lutetium (Lu);
- the nuclear-forming agent is one or more agents selected from the group consisting of TiO.sub.2, ZrO.sub.2, P.sub.2 O.sub.5, SnO.sub.2, ZnO, MoO.sub.3, Ta.sub.2 O.sub.5, Nb.sub.2 O.sub.5, and As.sub.2 O.sub.3.
- 13. The heat-generating composition according to claim 7, wherein the glass frit has the following ingredients:
- ______________________________________M.sup.II O = about 5 to about 50 weight percentB.sub.2 O.sub.3 = about 20 to about 80 weight percentM.sup.III.sub.2 O.sub.3 = about 0 to about 10 weight percentM.sup.I.sub.2 O = about 0 to about 5 weight percentSiO.sub.2 = about 0 to about 40 weight percentAl.sub.2 O.sub.3 = about 0 to about 40 weight percentBi.sub.2 O.sub.3 = about 0 to about 10 weight percentTiO.sub.2 = about 5 to about 20 weight percentNuclear-forming agent = about 0 to about 20 weight percent______________________________________
- M.sup.I is one or more alkali metals selected from the group consisting of Li, Na, K, Rb, and Cs;
- M.sup.II is one or more alkaline-earth metals selected from the group consisting of Mg, Ca, Sr, and Ba;
- M.sup.III is one or more elements selected from the group consisting of scandium, yttrium, and lanthanide; a lanthanide is a generalized element from the periodic table of elements in the range of from lanthanum (La) to lutetium (Lu);
- the nuclear-forming agent is one or more agents selected from the group consisting of ZrO.sub.2, P.sub.2 O.sub.5, SnO.sub.2, ZnO, MoO.sub.3, Ta.sub.2 O.sub.5, Nb.sub.2 O.sub.5, and As.sub.2 O.sub.3.
- 14. The heat-generating composition according to claim 7, wherein the glass frit has the following ingredients:
- ______________________________________M.sup.II O = about 25 to about 45 weight percentB.sub.2 O.sub.3 = about 20 to about 60 weight percentM.sup.III.sub.2 O.sub.3 = about 0 to about 5 weight percentM.sup.I.sub.2 O = about 0 to about 5 weight percentSiO.sub.2 = about 2 to about 10 weight percentAl.sub.2 O.sub.3 = about 2 to about 10 weight percentBi.sub.2 O.sub.3 = about 0 to about 10 weight percentTiO.sub.2 = about 8 to about 17 weight percentNuclear-forming agent = about 0 to about 20 weight percent______________________________________
- M.sup.I is one or more alkali metals selected from the group consisting of Li, Na, K, Rb, and Cs;
- M.sup.II is one or more alkaline-earth metals selected from the group consisting of Mg, Ca, Sr, and Ba;
- M.sup.III is one or more elements selected from the group consisting of scandium, yttrium, and lanthanide; a lanthanide is a generalized element from the periodic table of elements in the range of from lanthanum (La) to lutetium (Lu);
- the nuclear-forming agent is one or more agents selected from the group consisting of ZrO.sub.2, P.sub.2 O.sub.5, SnO.sub.2, ZnO, MoO.sub.3, Ta.sub.2 O.sub.5, Nb.sub.2 O.sub.5, and As.sub.2 O.sub.3.
Priority Claims (3)
Number |
Date |
Country |
Kind |
63-33550 |
Dec 1988 |
JPX |
|
1-317205 |
Dec 1989 |
JPX |
|
2-207188 |
Aug 1990 |
JPX |
|
Parent Case Info
This application is a continuation in part of application Ser. No. 07/457,402 filed Dec. 27, 1989, now abandoned and application Ser. No. 08/038,136 filed Mar. 26, 1993, now abandoned, which is a continuation in part of application Ser. No. 07/740,325 filed Aug. 5, 1991, now abandoned.
US Referenced Citations (11)
Foreign Referenced Citations (7)
Number |
Date |
Country |
53-50496 |
May 1978 |
JPX |
53-59890 |
May 1978 |
JPX |
53-59891 |
May 1978 |
JPX |
53-59892 |
May 1978 |
JPX |
53-59894 |
May 1978 |
JPX |
53-59895 |
May 1978 |
JPX |
53-59897 |
May 1978 |
JPX |
Related Publications (1)
|
Number |
Date |
Country |
|
38136 |
Mar 1993 |
|
Continuation in Parts (2)
|
Number |
Date |
Country |
Parent |
457402 |
Dec 1989 |
|
Parent |
740325 |
Aug 1991 |
|