JPS63194303A - Humidity sensitive ceramics - Google Patents
Humidity sensitive ceramicsInfo
- Publication number
- JPS63194303A JPS63194303A JP62027587A JP2758787A JPS63194303A JP S63194303 A JPS63194303 A JP S63194303A JP 62027587 A JP62027587 A JP 62027587A JP 2758787 A JP2758787 A JP 2758787A JP S63194303 A JPS63194303 A JP S63194303A
- Authority
- JP
- Japan
- Prior art keywords
- humidity
- moisture
- sensitive ceramics
- humidity sensitive
- sample
- 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
- 239000000919 ceramic Substances 0.000 title claims description 13
- 229910052768 actinide Inorganic materials 0.000 claims description 3
- 150000001255 actinides Chemical class 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- 229910052684 Cerium Inorganic materials 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 229910052714 tellurium Inorganic materials 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- -1 and B. aCO3 Chemical compound 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910052693 Europium Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- VQCBHWLJZDBHOS-UHFFFAOYSA-N erbium(III) oxide Inorganic materials O=[Er]O[Er]=O VQCBHWLJZDBHOS-UHFFFAOYSA-N 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum oxide Inorganic materials [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- KTUFCUMIWABKDW-UHFFFAOYSA-N oxo(oxolanthaniooxy)lanthanum Chemical compound O=[La]O[La]=O KTUFCUMIWABKDW-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- FKTOIHSPIPYAPE-UHFFFAOYSA-N samarium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Sm+3].[Sm+3] FKTOIHSPIPYAPE-UHFFFAOYSA-N 0.000 description 1
- 229910000018 strontium carbonate Inorganic materials 0.000 description 1
- LEDMRZGFZIAGGB-UHFFFAOYSA-L strontium carbonate Chemical compound [Sr+2].[O-]C([O-])=O LEDMRZGFZIAGGB-UHFFFAOYSA-L 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Non-Adjustable Resistors (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、感湿セラミックに関し、特に、電子レンジ
、オーブン、食器乾燥機などの食品調理器をはじめ各種
機器の湿度センサとして広く用いることができる感湿セ
ラミックに関する。Detailed Description of the Invention (Industrial Application Field) The present invention relates to humidity-sensitive ceramics, and in particular can be widely used as humidity sensors for various appliances including food cookers such as microwave ovens, ovens, and dish dryers. Regarding moisture-sensitive ceramics.
（従来の技術）
従来、このような用途に用いられる感湿セラミックとし
ては、ＭｇＣｒ２０．ｓ −Ｔ ｉ Ｏ２、ＺｎＯ−Ｃ
ｒ２０３−１．ｉ２ｏ、ｖ２０５−Ｔｉ０２などがあり
、これらの多（は湿度センサの材料として使用されてい
る。たとえば、特公昭５８−８１２１号公報には、加熱
クリーニングが容易にでき、かつ安定な特性を示す感湿
セラミックが開示きれている。(Prior Art) Conventionally, moisture-sensitive ceramics used for such purposes include MgCr20. s-T i O2, ZnO-C
r203-1. i2o, v205-Ti02, etc., and many of these materials are used as materials for humidity sensors. Wet ceramics are fully disclosed.
（発明が解決しようとする問題点）
しかしながら、これら従来の感湿セラミックは、１５０
℃以、ヒの高温域において感湿特性が低下したり、また
、低下しなくてもその特性が要求を満足でなかったりす
るため、たとえば、高温域で絶対湿度を検知することが
要求される電子レンジなどでは、その要求を満たすこと
かできなかった。(Problems to be Solved by the Invention) However, these conventional moisture-sensitive ceramics have a
For example, it is required to detect absolute humidity in a high temperature range because the humidity sensitivity characteristics deteriorate in the high temperature range of ℃ or higher, or even if it does not deteriorate, the characteristics do not meet the requirements. Microwave ovens and the like were unable to meet this demand.
したがって、この発明は、室温から高温域まで感度の良
好な感湿セラミックを提供するものである。Therefore, the present invention provides a moisture-sensitive ceramic having good sensitivity from room temperature to high temperature range.
（問題点を解決するための手段）
この発明は、次の一般式、
ＡＢｌ−ｘＢ’ｘ０≦ｘ≦０．３０）からなる主成分に
、Ｍｏ３からなる添加物を１０．０モル％以下含有とせ
な感湿セラミックである。(Means for Solving the Problems) This invention includes a main component having the following general formula, ABl-xB'x0≦x≦0.30, containing 10.0 mol% or less of an additive consisting of Mo3. Tosena moisture-sensitive ceramic.
ただし、ＡはＣａ、Ｓｒ、Ｂａのうち少なくとも１種Ｂ
はＣｅ、Ｚｒのうち少なくとも１種
Ｂ°はアクチナイドを除＜ Ｉｌｌ ａ族およびＩｎの
うち少なくとも１種
間はＷ、Ｍｏ、Ｔｅのうち少なくとも１種この発明の感
湿セラミックは、ト記した組成を構成する各種材料を調
合し、調合原料を混合して仮焼し、この仮焼粉末にバイ
ンダを加えたのち成形し、ざらに成形体を焼成すること
により得られる。そして、得られた焼結体の表面にポー
ラスな電極を付与することにより湿度センサが得られる
ことになる。However, A is at least one of Ca, Sr, and Ba.
is at least one of Ce and Zr; B° is excluding actinide; and at least one of Illa group and In is at least one of W, Mo, and Te. It is obtained by blending various materials constituting the powder, mixing and calcining the blended raw materials, adding a binder to the calcined powder, molding it, and roughly firing the molded body. A humidity sensor is then obtained by providing a porous electrode on the surface of the obtained sintered body.
（発明の効果）
この発明の感湿セラミックによれば、信頼性が高く、し
かも１５０℃以上の高温域でも、絶対湿度の検知ができ
る湿度センサを提供することができ、また検温感度の経
時変化が小きく、さらには高湿側から低湿側への応答が
速いという効果を有する。(Effects of the Invention) According to the humidity-sensitive ceramic of the present invention, it is possible to provide a humidity sensor that is highly reliable and can detect absolute humidity even in a high temperature range of 150°C or higher, and also changes over time in temperature detection sensitivity. It has the effect that the response is small and the response from the high humidity side to the low humidity side is fast.
（実施例）
以下に、この発明にかかる感湿セラミックについて詳細
に説明する。(Example) Below, the moisture-sensitive ceramic according to the present invention will be described in detail.
原料として、主成分となるＣａＣＯ３、ＳｒＣＯ３、Ｂ
ａＣＯ３、ＣｅＯ２、ＺｒＯ２、Ｌａ２Ｏ３、Ｎｄ２Ｏ
３、Ｙ２Ｏ３、Ｅｒ２Ｏ３、Ｄｙ２Ｑ３、Ｐｒ２０：（
、Ｓｍ２Ｏ３，５ｃ２０３、Ｉｎ２Ｏ３、ＷＯ３、Ｍｏ
Ｏ３、およびＴｅ０３を用意し、これらを第」表に示す
組成になるように秤量した。これらの秤量物をボールミ
ルで湿式混合した。次に、これを脱水、乾燥し、１２０
０℃で２時間仮焼した。そして、この仮焼物を粉砕し、
酢酸ビニル系樹脂を１０重量駕加えて混合し、得られた
造粒粉末を約２ｔｏｎ／ｃｍ２の圧力で直径１０＋＋＋
ｍ、厚み０．５ｎ＋Ｉの円板に成形した。この成形円板
を空気中で１３５０℃の温度で２時間焼成した。得られ
た直径８．００ｍｍ、厚み０．４５ｍｍの焼結体の両表
面に直径７．００ｍｍの白金のポーラス電極を付与して
湿度センサとした。As raw materials, the main components are CaCO3, SrCO3, and B.
aCO3, CeO2, ZrO2, La2O3, Nd2O
3, Y2O3, Er2O3, Dy2Q3, Pr20: (
, Sm2O3, 5c203, In2O3, WO3, Mo
O3 and Te03 were prepared and weighed to have the compositions shown in Table 1. These weighed materials were wet mixed in a ball mill. Next, this was dehydrated and dried, and
It was calcined at 0°C for 2 hours. Then, this calcined material is crushed,
Add and mix 10 parts by weight of vinyl acetate resin, and crush the resulting granulated powder with a diameter of 10+++ under a pressure of about 2 tons/cm2.
m and thickness 0.5n+I. This shaped disk was fired in air at a temperature of 1350° C. for 2 hours. Platinum porous electrodes with a diameter of 7.00 mm were provided on both surfaces of the obtained sintered body with a diameter of 8.00 mm and a thickness of 0.45 mm to prepare a humidity sensor.
このようにして得た湿度センサを用いて、水蒸気を１０
’ｐｐｍｗ（重量比表示）含む４５０℃の雰囲気中の抵
抗値（Ｒ）１）、および水蒸気を１０１０５ｐｐ含む４
５０℃の雰囲気中の抵抗値（Ｒ）＋２）を、それぞれ測
定した。Using the humidity sensor obtained in this way, water vapor can be detected by
Resistance value (R) in an atmosphere at 450°C including 'ppmw (weight ratio display) 1), and 4 containing 10105 ppm water vapor.
The resistance value (R)+2) in an atmosphere at 50° C. was measured for each.
さらに、これらの値を次式に代入して、湿度感度Ｓを算
出した。Furthermore, the humidity sensitivity S was calculated by substituting these values into the following equation.
ＲＨ］＝ＲＨ２・（）１１／Ｈ２）’−５Ｈ： １０１
０４ｐｐ、 ’２ ’ １０１０５ｐｐこのようにし
て、第１表に示したような結果を得た。RH]=RH2・()11/H2)'-5H: 101
04pp, '2' 10105pp In this way, the results shown in Table 1 were obtained.
なお、第１表中＊印を付しｔ：試料はこの発明範囲外の
ものであり、それ以外はこの発明範囲内のものである。Note that in Table 1, samples marked with an asterisk (t) are outside the scope of this invention, and the others are within the scope of this invention.
（以下、余白）
第 １ 表
第１表から明らかなように、この発明の感湿セラミック
について、その組成中のＸが０．３を越えると湿度感度
が低下する（試料番号５、試料番号１３、試料番号１４
）。また、添加物のＭｏ２が１０．０モル％を越えると
同様に湿度感度が低下する（試料番号９、試料番号１３
、試料番号１４、試料番号１９）。(Hereinafter, blank space) Table 1 As is clear from Table 1, the humidity sensitivity of the humidity-sensitive ceramic of the present invention decreases when X in the composition exceeds 0.3 (Sample No. 5, Sample No. 13). , sample number 14
). Furthermore, when the Mo2 content of the additive exceeds 10.0 mol%, the humidity sensitivity similarly decreases (sample no. 9, sample no. 13).
, Sample No. 14, Sample No. 19).
なお、この発明の感湿セラミックは、第１表以外のアク
チノイドを除＜ Ｉｌｌ ｒｒ族の元累、たとえば、Ｐ
ｍ、Ｅｕ、Ｇｄ、Ｔｂ、Ｈｏ、Ｔｍ、Ｙｂ、１．ｕを用
いてもよい。The moisture-sensitive ceramic of the present invention contains elements of the < Ill rr group excluding actinides other than those listed in Table 1, such as P
m, Eu, Gd, Tb, Ho, Tm, Yb, 1. u may also be used.
また、製法については、シート成形方式や、ペーストに
よる厚膜方式など、ヒ記した実施例の方法とは異なる他
の方法を用いてもよい。Further, as for the manufacturing method, other methods different from those of the above-mentioned embodiments may be used, such as a sheet molding method or a thick film method using paste.
Claims (1)
０）からなる主成分に、ＭＯ＿３からなる添加物を１０
．０モル％以下含有させたことを特徴とする感湿セラミ
ック。 ただし、ＡはＣａ、Ｓｒ、Ｂａのうち少なくとも１種Ｂ
はＣｅ、Ｚｒのうち少なくとも１種 Ｂ′はアクチナイドを除くIIIａ族およ びＩｎのうち少なくとも１種 ＭはＷ、Ｍｏ、Ｔｅのうち少なくとも１種[Claims] The following general formula, AB_1_−_xB'_xO_3 (0.0≦x≦0.3
0) and an additive consisting of MO_3 to the main component consisting of 10
．． A moisture-sensitive ceramic characterized by containing 0 mol% or less. However, A is at least one of Ca, Sr, and Ba.
is at least one of Ce and Zr B' is at least one of IIIa group excluding actinides and In M is at least one of W, Mo, and Te
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62027587A JPS63194303A (en) | 1987-02-09 | 1987-02-09 | Humidity sensitive ceramics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62027587A JPS63194303A (en) | 1987-02-09 | 1987-02-09 | Humidity sensitive ceramics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63194303A true JPS63194303A (en) | 1988-08-11 |
Family
ID=12225083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62027587A Pending JPS63194303A (en) | 1987-02-09 | 1987-02-09 | Humidity sensitive ceramics |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63194303A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5029969A (en) * | 1988-10-14 | 1991-07-09 | Ngk Insulators, Ltd. | Optical fiber composite insulator and method of producing the same |
| US5069525A (en) * | 1988-10-14 | 1991-12-03 | Ngk Insulators, Ltd. | Optical fiber built-in type composite insulator and method of producing the same |
| CN107837806A (en) * | 2017-11-09 | 2018-03-27 | 南京大学（苏州）高新技术研究院 | The preparation and application of a kind of powder catalytic material, the compound porous nano catalytic material containing metal organic frame |
| CN110045055A (en) * | 2019-05-16 | 2019-07-23 | 北京联合大学 | A kind of high selection sensitive material of trimethylamine and hydrogen sulfide |
-
1987
- 1987-02-09 JP JP62027587A patent/JPS63194303A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5029969A (en) * | 1988-10-14 | 1991-07-09 | Ngk Insulators, Ltd. | Optical fiber composite insulator and method of producing the same |
| US5069525A (en) * | 1988-10-14 | 1991-12-03 | Ngk Insulators, Ltd. | Optical fiber built-in type composite insulator and method of producing the same |
| US5090793A (en) * | 1988-10-14 | 1992-02-25 | Ngk Insulators, Ltd. | Optical fiber composite insulator |
| US5136680A (en) * | 1988-10-14 | 1992-08-04 | Ngk Insulators, Ltd. | Optical fiber built-in type composite insulator and method for producing the same |
| CN107837806A (en) * | 2017-11-09 | 2018-03-27 | 南京大学（苏州）高新技术研究院 | The preparation and application of a kind of powder catalytic material, the compound porous nano catalytic material containing metal organic frame |
| CN107837806B (en) * | 2017-11-09 | 2020-08-11 | 南京大学（苏州）高新技术研究院 | Preparation and application of powder catalytic material and metal-containing organic framework composite porous nano catalytic material |
| CN110045055A (en) * | 2019-05-16 | 2019-07-23 | 北京联合大学 | A kind of high selection sensitive material of trimethylamine and hydrogen sulfide |
| CN110045055B (en) * | 2019-05-16 | 2021-07-09 | 北京联合大学 | High-selectivity sensitive material of trimethylamine and hydrogen sulfide |
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