JP2019174440A - 酸素センサ素子 - Google Patents
酸素センサ素子 Download PDFInfo
- Publication number
- JP2019174440A JP2019174440A JP2019014907A JP2019014907A JP2019174440A JP 2019174440 A JP2019174440 A JP 2019174440A JP 2019014907 A JP2019014907 A JP 2019014907A JP 2019014907 A JP2019014907 A JP 2019014907A JP 2019174440 A JP2019174440 A JP 2019174440A
- Authority
- JP
- Japan
- Prior art keywords
- oxygen sensor
- sensor element
- composition
- oxygen
- sintered body
- 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.)
- Pending
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 187
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 187
- 239000001301 oxygen Substances 0.000 title claims abstract description 187
- 239000000203 mixture Substances 0.000 claims abstract description 131
- 239000010949 copper Substances 0.000 claims abstract description 76
- 229910052712 strontium Inorganic materials 0.000 claims abstract description 25
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000000919 ceramic Substances 0.000 claims abstract description 20
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 18
- 230000000737 periodic effect Effects 0.000 claims abstract description 8
- 229910052723 transition metal Inorganic materials 0.000 claims abstract description 8
- 229910052788 barium Inorganic materials 0.000 claims abstract description 7
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 7
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000011733 molybdenum Substances 0.000 claims abstract description 6
- 238000006467 substitution reaction Methods 0.000 claims description 52
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 12
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 claims description 12
- 239000011575 calcium Substances 0.000 claims description 11
- 239000002131 composite material Substances 0.000 claims description 7
- 229910052746 lanthanum Inorganic materials 0.000 claims description 7
- 229910052791 calcium Inorganic materials 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 6
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 6
- 229910052721 tungsten Inorganic materials 0.000 claims description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical group [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 5
- 229910052718 tin Inorganic materials 0.000 claims description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 5
- 239000010937 tungsten Substances 0.000 claims description 5
- 229910052779 Neodymium Inorganic materials 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 229910052797 bismuth Inorganic materials 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 229910052772 Samarium Inorganic materials 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims description 3
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 2
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 claims description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052802 copper Inorganic materials 0.000 abstract description 4
- 230000000593 degrading effect Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 23
- 239000000463 material Substances 0.000 description 18
- 238000002441 X-ray diffraction Methods 0.000 description 15
- 230000008859 change Effects 0.000 description 15
- 238000000034 method Methods 0.000 description 14
- 239000011521 glass Substances 0.000 description 11
- 230000004043 responsiveness Effects 0.000 description 11
- 239000013078 crystal Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 239000007791 liquid phase Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000010587 phase diagram Methods 0.000 description 7
- 238000004455 differential thermal analysis Methods 0.000 description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 5
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 5
- 230000035945 sensitivity Effects 0.000 description 5
- 229910052709 silver Inorganic materials 0.000 description 5
- 239000004332 silver Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 229910052790 beryllium Inorganic materials 0.000 description 2
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000027734 detection of oxygen Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005496 eutectics Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 229910052705 radium Inorganic materials 0.000 description 2
- HCWPIIXVSYCSAN-UHFFFAOYSA-N radium atom Chemical compound [Ra] HCWPIIXVSYCSAN-UHFFFAOYSA-N 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 229910052727 yttrium Inorganic materials 0.000 description 2
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 208000032767 Device breakage Diseases 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- 229910052765 Lutetium Inorganic materials 0.000 description 1
- 229910003808 Sr-Cu Inorganic materials 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910002056 binary alloy Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000007606 doctor blade method Methods 0.000 description 1
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 1
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- -1 for example Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- KJZYNXUDTRRSPN-UHFFFAOYSA-N holmium atom Chemical compound [Ho] KJZYNXUDTRRSPN-UHFFFAOYSA-N 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000462 isostatic pressing Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- OOYGSFOGFJDDHP-KMCOLRRFSA-N kanamycin A sulfate Chemical group OS(O)(=O)=O.O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CN)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O[C@@H]2[C@@H]([C@@H](N)[C@H](O)[C@@H](CO)O2)O)[C@H](N)C[C@@H]1N OOYGSFOGFJDDHP-KMCOLRRFSA-N 0.000 description 1
- OHSVLFRHMCKCQY-UHFFFAOYSA-N lutetium atom Chemical compound [Lu] OHSVLFRHMCKCQY-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 1
- 238000010532 solid phase synthesis reaction Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000003826 uniaxial pressing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/45—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on copper oxide or solid solutions thereof with other oxides
- C04B35/4504—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on copper oxide or solid solutions thereof with other oxides containing rare earth oxides
- C04B35/4508—Type 1-2-3
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/45—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on copper oxide or solid solutions thereof with other oxides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/45—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on copper oxide or solid solutions thereof with other oxides
- C04B35/4504—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on copper oxide or solid solutions thereof with other oxides containing rare earth oxides
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
- G01N27/125—Composition of the body, e.g. the composition of its sensitive layer
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
- G01N27/406—Cells and probes with solid electrolytes
- G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
- G01N27/4073—Composition or fabrication of the solid electrolyte
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
- G01N27/406—Cells and probes with solid electrolytes
- G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
- G01N27/409—Oxygen concentration cells
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3213—Strontium oxides or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3215—Barium oxides or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
- C04B2235/3227—Lanthanum oxide or oxide-forming salts thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
Description
本発明の第1の実施形態に係る、酸素濃度の検知体としての酸素センサ素子は、LnBa2Cu3O7-δの組成(以降において、従来組成ともいう。)からなる材料の一部を、周期表第2属の元素、すなわち、ベリリウム(Be)、マグネシウム(Mg)、カルシウム(Ca)、ストロンチウム(Sr)、バリウム(Ba)、ラジウム(Ra)より選択したいずれか1つの元素で置換した組成を有する。
表1は、従来組成の酸素センサ素子、および第1の実施形態に係る酸素センサ素子それぞれの耐湿試験結果をまとめて示している。表1の「実施例」は、従来組成の一部をSr(ストロンチウム)で置換し、LnをGd(ガドリニウム)とした組成GdBa2-xSrxCu3O7-δ(0<x≦1.5)においてx=1とした酸素センサ素子である。表1の「従来例」とは、従来組成LnBa2Cu3O7-δにおいてLnをGd(ガドリニウム)とした酸素センサ素子であり、材料の一部をSr(ストロンチウム)で置換していない、すなわちx=0の酸素センサ素子である。
図4は、従来組成LnBa2Cu3O7-δにおいてLnをGd(ガドリニウム)とした酸素センサ素子(x=0)を950℃にて10時間、曝したとき(950℃焼成)の素子破断面をSEM観察した結果を示すSEM写真である。また、図5は、第1の実施形態に係る酸素センサ素子あって、従来組成のLnをGd(ガドリニウム)とし、その組成の一部をSr(ストロンチウム)で置換した組成GdBa2-xSrxCu3O7-δ(0<x≦1.5)においてx=1とした試験用サンプルを、950℃にて10時間、曝したとき(950℃焼成)の素子破断面をSEM観察した結果を示すSEM写真である。なお、図4と図5のいずれも、倍率1000倍の反射電子像である。
従来組成の一部をSr(ストロンチウム)で置換し、Ln(希土類元素)をガドリニウム(Gd)とした組成物GdBa2-xSrxCu3O7-δにおいて、置換量xをx=0,x=0.5,x=0.75,x=1,x=1.25,x=1.5,x=2とした試料を作製し、それぞれについてXRD測定を行った。
図10は、従来組成の試験用サンプル(x=0)と、実施例に係る試験用サンプル(x=1)とについて、酸素センサとしての酸素応答性を評価した結果を示している。ここでは、各試験用サンプルに対して、図10の期間T1において標準エア(酸素濃度21%)の環境下とし、続く期間T2において酸素濃度1%の環境に切り換え、次の期間T3において標準エア(酸素濃度21%)の環境に切り換えた。
第1の実施形態に係る酸素センサ素子を使用する酸素センサは、酸素センサ素子の中央部の発熱箇所(ホットスポット)が酸素濃度の検出部となる。例えば、図12に示す酸素センサ1は、酸素センサ素子の保護部材として機能する、耐熱ガラスからなる円筒形のガラス管4の内部に酸素センサ素子5を収容した構造となっている。ガラス管4の両端には、酸素センサ1が外部と電気的な接続を行うため、例えば銅(Cu)等からなる金属製の導電キャップ(口金)2a,2bが嵌着されている。
本発明の第2の実施形態に係る酸素センサ素子は、上述した従来組成LnBa2Cu3O7-δにおいて、バリウム(Ba)の全量をストロンチウム(Sr)で置換し、かつ、銅(Cu)の一部を遷移金属元素、または亜鉛(Zn)、アルミニウム(Al)、錫(Sn)、ビスマス(Bi)より選択したいずれかの元素で置換した組成を有する。
直径が約16mm、厚さが約2mmの円盤状の酸素センサ素子のサンプルを作製し、40℃、93%RH雰囲気下で所定の時間、それらのサンプルを放置して耐湿試験を行った。ここでは、焼結体のペレットをそのまま耐湿試験に使用した。
図16は、Gd系、Y系の焼結体サンプルの溶断に至る電力をまとめた耐溶断特性であり、横軸がMo置換量y、縦軸が溶断電力である。
図17は、Gd系の焼結体サンプル(組成GdSr2Cu3-yMoyO7-δのセンサ素子)について、Mo置換量を変えたときの酸素応答性の測定結果である。また、図18は、Y系の焼結体サンプル(組成YSr2Cu3-yMoyO7-δのセンサ素子)について、Mo置換量を変えたときの酸素応答性の測定結果である。
図14および図15に示すXRD測定結果より、Gd系、Y系の焼結体サンプルともに、Mo置換により斜方晶→正方晶への結晶構造の変化がみられた。このような変化は、Moを添加していない従来のSr置換でもみられるが、第2の実施形態に係る酸素センサ素子ではBaフリーを実現しているため、炭酸化、水酸化しやすいBa自体の削減も耐湿性向上に寄与していると考えられる。
2a,2b 導電キャップ
3a,3b 通気孔
4 ガラス管
5 酸素センサ素子
Claims (15)
- セラミック焼結体からなり、電圧を印加したときの電流値をもとに酸素濃度を検出する酸素センサ素子であって、
前記セラミック焼結体は組成式LnBa2Cu3O7-δ(Lnは希土類元素で、δは酸素不定比量を表す)の一部を周期表第2属の元素より選択したいずれかの元素で置換した組成を有することを特徴とする酸素センサ素子。 - 前記周期表第2属の元素よりストロンチウム(Sr)を選択したことを特徴とする請求項1に記載の酸素センサ素子。
- 前記ストロンチウム(Sr)で置換してなる組成物を組成式LnBa2-xSrxCu3O7-δで表したとき、置換量xは0<x≦1.5であることを特徴とする請求項2に記載の酸素センサ素子。
- 前記組成式LnBa2-xSrxCu3O7-δで表される組成物の一部を、さらにカルシウム(Ca)およびランタン(La)で置換したことを特徴とする請求項3に記載の酸素センサ素子。
- 前記組成式LnBa2-xSrxCu3O7-δで表される組成物に、組成式Ln2BaCuO5(Lnは希土類元素)で表される組成物を混合したことを特徴とする請求項3または4に記載の酸素センサ素子。
- 前記組成式LnBa2-xSrxCu3O7-δで表される組成物は複合ペロブスカイト構造を有することを特徴とする請求項3〜5のいずれか1項に記載の酸素センサ素子。
- セラミック焼結体からなり、電圧を印加したときの電流値をもとに酸素濃度を検出する酸素センサ素子であって、
前記セラミック焼結体は組成式LnBa2Cu3O7-δ(Lnは希土類元素で、δは酸素不定比量を表す)のバリウム(Ba)の全量をストロンチウム(Sr)で置換するとともに、銅(Cu)の一部を遷移金属元素、または亜鉛(Zn)、アルミニウム(Al)、錫(Sn)、ビスマス(Bi)より選択したいずれかの元素で置換した組成を有することを特徴とする酸素センサ素子。 - 前記遷移金属元素よりモリブデン(Mo)またはタングステン(W)を選択したことを特徴とする請求項7に記載の酸素センサ素子。
- 前記モリブデン(Mo)で置換してなる組成物を組成式LnSr2Cu3-yMoyO7-δで表し、前記タングステン(W)で置換してなる組成物を組成式LnSr2Cu3-yWyO7-δで表したとき、置換量yは0<y<0.5であることを特徴とする請求項8に記載の酸素センサ素子。
- 好ましくは、前記置換量yは0.25≦y<0.4であることを特徴とする請求項9に記載の酸素センサ素子。
- 前記組成式LnSr2Cu3-yMoyO7-δで表される組成物、および前記組成式LnSr2Cu3-yWyO7-δで表される組成物は複合ペロブスカイト構造を有することを特徴とする請求項8〜10のいずれか1項に記載の酸素センサ素子。
- 前記希土類元素Lnとしてガドリニウム(Gd)、ランタン(La)、ネオジム(Nd)、あるいはサマリウム(Sm)を選択したことを特徴とする請求項8〜11のいずれか1項に記載の酸素センサ素子。
- 前記セラミック焼結体は線状体のセンサ素子であることを特徴とする請求項1〜12のいずれか1項に記載の酸素センサ素子。
- 請求項1〜13のいずれか1項に記載の酸素センサ素子を酸素濃度の検出素子としたことを特徴とする酸素センサ。
- 前記酸素センサ素子は、両端に通気孔を有する保護管内に収容されていることを特徴とする請求項14に記載の酸素センサ。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018015923 | 2018-01-31 | ||
JP2018015923 | 2018-01-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2019174440A true JP2019174440A (ja) | 2019-10-10 |
Family
ID=67478852
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2019014907A Pending JP2019174440A (ja) | 2018-01-31 | 2019-01-30 | 酸素センサ素子 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20210041409A1 (ja) |
JP (1) | JP2019174440A (ja) |
KR (1) | KR20200124229A (ja) |
CN (1) | CN111670360A (ja) |
DE (1) | DE112019000603T5 (ja) |
TW (1) | TWI789488B (ja) |
WO (1) | WO2019151358A1 (ja) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01291151A (ja) * | 1988-05-18 | 1989-11-22 | Chichibu Cement Co Ltd | 酸素センサ |
JPH0597435A (ja) * | 1991-03-22 | 1993-04-20 | Canon Inc | 金属酸化物材料 |
EP0826961A1 (en) * | 1996-08-30 | 1998-03-04 | Tokyo Gas Co., Ltd. | Self-heating oxygen sensor |
JP2007085816A (ja) * | 2005-09-21 | 2007-04-05 | Nagaoka Univ Of Technology | 酸素センサ |
JP2018013403A (ja) * | 2016-07-20 | 2018-01-25 | Koa株式会社 | 酸素センサ |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2752969B2 (ja) * | 1987-05-25 | 1998-05-18 | 株式会社東芝 | 酸化物超電導体 |
JP2590157B2 (ja) * | 1987-12-10 | 1997-03-12 | 株式会社東芝 | 超電導体線材の製造方法 |
JPH0642203Y2 (ja) * | 1988-07-25 | 1994-11-02 | 日産自動車株式会社 | N▲下2▼oガス検出素子 |
JPH04134259A (ja) * | 1990-09-27 | 1992-05-08 | Kokusai Chodendo Sangyo Gijutsu Kenkyu Center | 酸素濃度の測定方法および酸素センサ |
JP2000055855A (ja) * | 1998-08-04 | 2000-02-25 | Tokyo Gas Co Ltd | 自己発熱型ガスセンサ |
US20030146093A1 (en) * | 2002-02-05 | 2003-08-07 | Kyocera Corporation | Oxygen sensor |
TWI255340B (en) * | 2002-04-05 | 2006-05-21 | Du Pont | Method and apparatus for analyzing mixtures of gases |
JPWO2003091719A1 (ja) * | 2002-04-25 | 2005-09-02 | 独立行政法人科学技術振興機構 | 窒素酸化物検知電極およびこれを用いた窒素酸化物センサ |
US7763208B2 (en) * | 2003-11-12 | 2010-07-27 | E.I. Du Pont De Nemours And Company | System and method for sensing and analyzing gases |
JP5149025B2 (ja) * | 2008-01-31 | 2013-02-20 | テルモ株式会社 | 酸素濃縮装置 |
CN101901922A (zh) * | 2010-03-31 | 2010-12-01 | 清华大学 | 复合氧化物、烧结体、固体电解质及其制造方法 |
JP5910683B2 (ja) * | 2013-08-30 | 2016-04-27 | 株式会社デンソー | ガス濃度検出装置 |
JP6518628B2 (ja) * | 2016-06-27 | 2019-05-22 | 日本特殊陶業株式会社 | セラミックス焼結体 |
JP7000221B2 (ja) * | 2018-03-23 | 2022-01-19 | Koa株式会社 | ガスセンサおよびその製造方法 |
JP7000222B2 (ja) * | 2018-03-23 | 2022-01-19 | Koa株式会社 | ガスセンサおよびその製造方法 |
-
2019
- 2019-01-30 WO PCT/JP2019/003263 patent/WO2019151358A1/ja active Application Filing
- 2019-01-30 KR KR1020207024047A patent/KR20200124229A/ko not_active Application Discontinuation
- 2019-01-30 JP JP2019014907A patent/JP2019174440A/ja active Pending
- 2019-01-30 US US16/966,203 patent/US20210041409A1/en not_active Abandoned
- 2019-01-30 CN CN201980010796.XA patent/CN111670360A/zh active Pending
- 2019-01-30 DE DE112019000603.7T patent/DE112019000603T5/de not_active Withdrawn
- 2019-01-31 TW TW108103669A patent/TWI789488B/zh active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01291151A (ja) * | 1988-05-18 | 1989-11-22 | Chichibu Cement Co Ltd | 酸素センサ |
JPH0597435A (ja) * | 1991-03-22 | 1993-04-20 | Canon Inc | 金属酸化物材料 |
EP0826961A1 (en) * | 1996-08-30 | 1998-03-04 | Tokyo Gas Co., Ltd. | Self-heating oxygen sensor |
JPH1073549A (ja) * | 1996-08-30 | 1998-03-17 | Tokyo Gas Co Ltd | 自己発熱式酸素センサ |
JP2007085816A (ja) * | 2005-09-21 | 2007-04-05 | Nagaoka Univ Of Technology | 酸素センサ |
JP2018013403A (ja) * | 2016-07-20 | 2018-01-25 | Koa株式会社 | 酸素センサ |
Also Published As
Publication number | Publication date |
---|---|
DE112019000603T5 (de) | 2020-12-03 |
TW201934994A (zh) | 2019-09-01 |
WO2019151358A1 (ja) | 2019-08-08 |
TWI789488B (zh) | 2023-01-11 |
CN111670360A (zh) | 2020-09-15 |
KR20200124229A (ko) | 2020-11-02 |
US20210041409A1 (en) | 2021-02-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2546840B1 (en) | Surface-mountable negative-characteristic ceramic thermistor based on Mn, Co, Ni and Ti compounds | |
JP5327555B2 (ja) | 半導体セラミック及び正特性サーミスタ | |
EP2371788A1 (en) | Semiconductor ceramic and positive temperature coefficient thermistor | |
US10379076B2 (en) | Electrically conductive oxide sintered compact, member for electrical conduction, and gas sensor | |
KR20170016805A (ko) | 반도체 자기 조성물 및 ptc 서미스터 | |
JP7290215B2 (ja) | 酸素センサ素子 | |
WO2020090489A1 (ja) | サーミスタ焼結体および温度センサ素子 | |
JP5765611B2 (ja) | Ptc素子および発熱モジュール | |
WO2022264918A1 (ja) | 酸素センサ素子およびその製造方法 | |
JP2019174440A (ja) | 酸素センサ素子 | |
JP7085714B2 (ja) | 酸素センサ素子 | |
JP6675050B1 (ja) | サーミスタ焼結体および温度センサ素子 | |
JP2012046372A (ja) | Ptc素子および発熱モジュール | |
JP3823876B2 (ja) | 電圧依存性非直線抵抗体 | |
US10134512B2 (en) | Ceramic material and resistive element | |
JP3840917B2 (ja) | 電圧依存性非直線抵抗体 | |
JP3711916B2 (ja) | 電圧依存性非直線抵抗体 | |
JP2000251535A (ja) | 酸化物イオン伝導体及びその製造方法 | |
JP2002338346A (ja) | 電圧依存性非直線抵抗体 | |
JP2013206899A (ja) | 積層型ptcサーミスタ | |
JP2002175904A (ja) | 電圧依存性非直線抵抗体磁器の製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AA64 | Notification of invalidation of claim of internal priority (with term) |
Free format text: JAPANESE INTERMEDIATE CODE: A241764 Effective date: 20190618 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20190807 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20190808 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A821 Effective date: 20200908 |
|
RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7422 Effective date: 20200908 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20201014 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20220105 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20221031 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20221101 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20230418 |