US3899449A - Low temperature coefficient of resistivity cermet resistors - Google Patents
Low temperature coefficient of resistivity cermet resistors Download PDFInfo
- Publication number
- US3899449A US3899449A US359244A US35924473A US3899449A US 3899449 A US3899449 A US 3899449A US 359244 A US359244 A US 359244A US 35924473 A US35924473 A US 35924473A US 3899449 A US3899449 A US 3899449A
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- US
- United States
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- weight percent
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- present
- composition
- oxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
- H01C17/06—Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base
- H01C17/065—Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thick film techniques, e.g. serigraphy
- H01C17/06506—Precursor compositions therefor, e.g. pastes, inks, glass frits
- H01C17/06513—Precursor compositions therefor, e.g. pastes, inks, glass frits characterised by the resistive component
- H01C17/06533—Precursor compositions therefor, e.g. pastes, inks, glass frits characterised by the resistive component composed of oxides
- H01C17/0654—Oxides of the platinum group
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/06—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material including means to minimise changes in resistance with changes in temperature
Definitions
- vanadium oxide is used in conjunction with noble metal metallizing compositions in relatively small amounts to prevent agglomeration of the metal particles and to improve the solderability, conductivity and/or adhesion properties of the metallizing materials.
- the same indication of improvement in solderability for these compositions by adding vanadium pentoxide is also indicated in US. Pat. No. 3,440,182.
- vanadium pentoxide is uti lized to control TCR in a resistor composition of the bismuth ruthenate type which utilizes a glass frit binder consisting of 80% lead oxide, 10 si1icon oxide and 10% boron oxide.
- 'Aglass was prepared from the teachings of this particular patentand combined with a conductive phase used to fabricate the-resistors of this invention composedfi'of.
- ruthenium dioxide; vanadium pentoxide, and aluminum trioxide as set forth in Example l 1. It had a sheet resistiyity of .5.49K ohm/sq./mil.
- This glass material was combined with a conductive material composed of ruthenium dioxide in an amount of 5.34 w eight percent preparedfrom ruthenium resinate containing 5.26 weight pereentruthenium dioxide, iridium dioxide in an amount of 7v.2 weight percent pre pared from iridium resinate containing 6.99 weight percent iridium dioxide, 2.95 weightpercent bismuth trioxide, 4.18 weight percentvanadiurn pentoxide and the previously described glass in the; ,amount .of 80.41 weight percent.
- the resistivelmaterial prepared had a sheet resistivityof 24,000 ohms/sqjmil.
- the cermet resistor composition of this invention can be prepared either by utilizing the ruthenium and iridfium dioxides in a resinate form for ultimate conversion to the dioxidefor can be prepared by utilizing the ruthenium and/or iridium dioxides themselves as starting materials.
- a description of'the cermet resistor composition' as prepared from the resinates of ruthenium and iridium will first be" given.
- the particular resinates of ruthenium and iridium employed in the Examples of Table III andin" Examples 20, 21 and 22 are designated A-l 124 arid A-l 123, respectively, by the supplier, Engelhard Industries, Inc., 'I-lanovia Liquid Gold Division of East Newark; N. J. They are resinate solutions containing4l0% ruthenium or'5.26% ruthenium dioxide and 6.0% iridium or 6.99% iridium dioxide, respectively.
- the range of starting materials for the resinateprepared compositions and for the glass are described in the following Tables I and II.
- the vehicle may consist of any number of high boiling point organic liquids such as l-ethyl-2-hexanol which, in combination with the resistive powder, have a viscosity suitable for screen printing, dipping, or painting onto a substrate.
- Example 20 illustrates the utilization of vanadium pentoxide predissolved in the glass desig- 5 nated FB-l99N to the extent of 6.48% b wei ht. 2.
- MIX constituents together 1n a ball mill with acey g tone to form a slurry and ball mill with a grinding me- Example 20 dium alumina for 0.1 to 8.0 hours.
- Type A* Type P" 1:0 wt. '7 v. ,o wt. /1 2.83 2.77 3.15 1.90 1.90 1.50 1.73 1.73 A1 O wt. 0.75 1.41 6.90 7.00 a.
- Glass FB-199N *** wt. /1 90.73 90.26 85.22 94.1 86.50 i94.75 92.49 92.49 Average Sheer v Resistivity**** 6180 8600 27,900 53,200 1 12,900 449,100 400,000 30,000
- This material is processed in the same method as indicated for the oxide starting materials under the head- 60 ing Oxide Method.”
- vanadium oxide can be introduced through a vanadiuni'resirrate precursor material. Examples 21 and 22 following illustrate these.
- Example 21 Ingredients 7( By Weight Oxide Ruthenium Resinate 10.48 (5.26% RuO Iridium Resinate 13.93 (6.99% lrO. V 0 4.84 Bi Q, 3.02 Glass FB- 199N (As indicated in Tables Ill and V) 67.72
- Example 22 indicates utilization of vanadium oxide introduced as vanadium resinate.
- Example 22 Results: Sheet Resistivity: 280 ohmslsqjmil. TCR ppm/"C:
- the important conditions for achieving the low temperature coefficient of resistivity are the utilization of vanadium oxide with ruthenium dioxide, which preferably can also include iridium dioxide, in the designated amount with a particular glass composition.
- the vanadium oxide as well as the ruthenium and iridium dioxides can be utilized as oxides or derived from resinate precursors. While vanadium pentoxide is the preferred oxide of vanadium, other oxides such as vanadium trioxide or those oxides resulting from the pyrolysis of vanadium resinate can likewise be employed to advantage.
- cermet resistor composition having a low temperature coefficient of resistivity which can be effected at the extremes and generally less than 20 ppm/C, maintained over a broad temperature range.
- the vanadium oxide can be utilized in various stages of oxidation and in the form of theresinate as can the ruthenium and the iridium dioxides.
- the materials are easily processed into resistive paints. No additional capital investment need be incurred to substitute the cermet resistor compositions of this invention for more conventional compositions, and they can be easily fabricated into thick film resistors without additional skills being required by the fabricator.
- a substrate composed ofhigh temperature, electrically nonconductive material comprising: a conductive phase composed of vanadium oxide in the range from about 1.00 to about 10.00 weight'percent and ruthenium dioxide in the range of from about 1 .00 to about 30.00 weight percent, and an interdispersed glass phase in the range of about 50100 to about 98.00 weight percent, said glass phase composed of lead oxide in the range of about 35.00 to about 45.00 weight percent, boron trioxide in the range of about 15.00 to about 25.00 weight percent and silicon dioxide present in the range of about 30.00 to about 40.00 weight percent.
- the cermet resistor composition as defined in claim 1 further including iridium dioxide present in the range of about 1.00 to about 15.00 weight percent.
- cermet resistor composition as defined in claim 3 wherein said glass phase is composed of lead oxide present in the range of about 38.00 to about 45.00 weight percent, said boron trioxide is present in the range of about 17.00 to about 21.00 and said silicon dioxide is present in the range of about 33.00 to about 37.00 weight percent.
- composition as defined in claim 2 wherein said composition further includes bismuth trioxide present in an amount not greater than about 10.00 weight percent.
- composition as defined in claim 2 wherein said composition includes aluminum trioxide present in an amount not greater than about 10.00 weight percent.
- glass frit present in the range of about 5.00 to 40.00 weight percent, said glass frit comprising lead oxide present in the range of about 35.00
- composition as defined in claim 11 further 5
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Non-Adjustable Resistors (AREA)
- Conductive Materials (AREA)
- Glass Compositions (AREA)
- Details Of Resistors (AREA)
Priority Applications (14)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US359244A US3899449A (en) | 1973-05-11 | 1973-05-11 | Low temperature coefficient of resistivity cermet resistors |
CA197,202A CA1037705A (en) | 1973-05-11 | 1974-04-09 | Low temperature coefficient of resistivity cermet resistors |
AU67890/74A AU479484B2 (en) | 1973-05-11 | 1974-04-16 | Low temperature coefficient of resistivity cermet resistors |
IN890/CAL/74A IN142722B (de) | 1973-05-11 | 1974-04-18 | |
GB1706474A GB1459327A (en) | 1973-05-11 | 1974-04-18 | Resistor composition |
DE2421861A DE2421861C2 (de) | 1973-05-11 | 1974-05-06 | Elektrischer Vanadium-Ruthenium-Widerstand |
CH644674A CH620544A5 (de) | 1973-05-11 | 1974-05-10 | |
BR3843/74A BR7403843D0 (pt) | 1973-05-11 | 1974-05-10 | Composicao para resistor tipo "cermet" de baixo coeficiente de resistividade em funcao da temperatura e resistor tipo "cermet" |
JP49052127A JPS6037601B2 (ja) | 1973-05-11 | 1974-05-10 | サ−メツト抵抗体組成 |
FR7416228A FR2229122B1 (de) | 1973-05-11 | 1974-05-10 | |
AR253700A AR202024A1 (es) | 1973-05-11 | 1974-05-10 | Composicion de resistor de cermet |
IT22551/74A IT1012245B (it) | 1973-05-11 | 1974-05-10 | Resistori metalloceramici a basso coefficiente di temperatura di resistivita |
ES426228A ES426228A1 (es) | 1973-05-11 | 1974-05-11 | Procedimiento de obtencion de composiciones para resistorescerametalicos. |
US05/565,870 US4006278A (en) | 1973-05-11 | 1975-04-07 | Low temperature coefficient of resistivity cermet resistors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US359244A US3899449A (en) | 1973-05-11 | 1973-05-11 | Low temperature coefficient of resistivity cermet resistors |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US05/565,870 Division US4006278A (en) | 1973-05-11 | 1975-04-07 | Low temperature coefficient of resistivity cermet resistors |
Publications (1)
Publication Number | Publication Date |
---|---|
US3899449A true US3899449A (en) | 1975-08-12 |
Family
ID=23412973
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US359244A Expired - Lifetime US3899449A (en) | 1973-05-11 | 1973-05-11 | Low temperature coefficient of resistivity cermet resistors |
Country Status (12)
Country | Link |
---|---|
US (1) | US3899449A (de) |
JP (1) | JPS6037601B2 (de) |
AR (1) | AR202024A1 (de) |
BR (1) | BR7403843D0 (de) |
CA (1) | CA1037705A (de) |
CH (1) | CH620544A5 (de) |
DE (1) | DE2421861C2 (de) |
ES (1) | ES426228A1 (de) |
FR (1) | FR2229122B1 (de) |
GB (1) | GB1459327A (de) |
IN (1) | IN142722B (de) |
IT (1) | IT1012245B (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4292619A (en) * | 1978-01-12 | 1981-09-29 | U.S. Philips Corporation | Resistance material |
US4362656A (en) * | 1981-07-24 | 1982-12-07 | E. I. Du Pont De Nemours And Company | Thick film resistor compositions |
US5250958A (en) * | 1987-12-10 | 1993-10-05 | Matsushita Electric Industrial Co., Ltd. | Thermal head and manufacturing method thereof |
US20040005472A1 (en) * | 2000-05-23 | 2004-01-08 | Saint-Gobain Glass France | Glazing coated with at least one layer having thermochromic properties |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112309606A (zh) * | 2019-07-31 | 2021-02-02 | 湖北中烟工业有限责任公司 | 一种复合型金属浆料组合物及其制备方法和用途 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3304199A (en) * | 1963-11-12 | 1967-02-14 | Cts Corp | Electrical resistance element |
US3440182A (en) * | 1965-07-29 | 1969-04-22 | Du Pont | Copper/vanadium oxide compositions,noble metal metalizing compositions containing vanadium oxide additives,and electrical conductor elements made therewith |
US3679607A (en) * | 1966-10-24 | 1972-07-25 | Int Nickel Co | Oxide resistor materials |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA944938A (en) * | 1970-01-16 | 1974-04-09 | Rajnikant B. Amin | Critical temperature resistors comprising a selected glass and vanadium dioxide or metal-doped vanadium dioxide |
-
1973
- 1973-05-11 US US359244A patent/US3899449A/en not_active Expired - Lifetime
-
1974
- 1974-04-09 CA CA197,202A patent/CA1037705A/en not_active Expired
- 1974-04-18 GB GB1706474A patent/GB1459327A/en not_active Expired
- 1974-04-18 IN IN890/CAL/74A patent/IN142722B/en unknown
- 1974-05-06 DE DE2421861A patent/DE2421861C2/de not_active Expired
- 1974-05-10 CH CH644674A patent/CH620544A5/de not_active IP Right Cessation
- 1974-05-10 FR FR7416228A patent/FR2229122B1/fr not_active Expired
- 1974-05-10 IT IT22551/74A patent/IT1012245B/it active
- 1974-05-10 AR AR253700A patent/AR202024A1/es active
- 1974-05-10 JP JP49052127A patent/JPS6037601B2/ja not_active Expired
- 1974-05-10 BR BR3843/74A patent/BR7403843D0/pt unknown
- 1974-05-11 ES ES426228A patent/ES426228A1/es not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3304199A (en) * | 1963-11-12 | 1967-02-14 | Cts Corp | Electrical resistance element |
US3440182A (en) * | 1965-07-29 | 1969-04-22 | Du Pont | Copper/vanadium oxide compositions,noble metal metalizing compositions containing vanadium oxide additives,and electrical conductor elements made therewith |
US3679607A (en) * | 1966-10-24 | 1972-07-25 | Int Nickel Co | Oxide resistor materials |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4292619A (en) * | 1978-01-12 | 1981-09-29 | U.S. Philips Corporation | Resistance material |
US4362656A (en) * | 1981-07-24 | 1982-12-07 | E. I. Du Pont De Nemours And Company | Thick film resistor compositions |
US5250958A (en) * | 1987-12-10 | 1993-10-05 | Matsushita Electric Industrial Co., Ltd. | Thermal head and manufacturing method thereof |
US20040005472A1 (en) * | 2000-05-23 | 2004-01-08 | Saint-Gobain Glass France | Glazing coated with at least one layer having thermochromic properties |
US6872453B2 (en) | 2000-05-23 | 2005-03-29 | Saint-Gobain Glass France | Glazing coated with at least one layer having thermochromic properties |
US20050147825A1 (en) * | 2000-05-23 | 2005-07-07 | Saint-Gobain Glass France | Glazing coated with at least one layer having thermochromic properties |
US7311976B2 (en) | 2000-05-23 | 2007-12-25 | Saint-Gobain Glass France | Glazing coated with at least one layer having thermochromic properties |
Also Published As
Publication number | Publication date |
---|---|
CA1037705A (en) | 1978-09-05 |
AR202024A1 (es) | 1975-05-09 |
DE2421861A1 (de) | 1974-12-05 |
JPS6037601B2 (ja) | 1985-08-27 |
IN142722B (de) | 1977-08-20 |
FR2229122B1 (de) | 1982-06-11 |
ES426228A1 (es) | 1976-07-01 |
JPS5016097A (de) | 1975-02-20 |
BR7403843D0 (pt) | 1974-12-03 |
GB1459327A (en) | 1976-12-22 |
DE2421861C2 (de) | 1984-03-29 |
IT1012245B (it) | 1977-03-10 |
FR2229122A1 (de) | 1974-12-06 |
AU6789074A (en) | 1975-10-16 |
CH620544A5 (de) | 1980-11-28 |
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