JP2580283B2 - Electronic conductive ceramics - Google Patents
Electronic conductive ceramicsInfo
- Publication number
- JP2580283B2 JP2580283B2 JP63253691A JP25369188A JP2580283B2 JP 2580283 B2 JP2580283 B2 JP 2580283B2 JP 63253691 A JP63253691 A JP 63253691A JP 25369188 A JP25369188 A JP 25369188A JP 2580283 B2 JP2580283 B2 JP 2580283B2
- Authority
- JP
- Japan
- Prior art keywords
- electron
- conductive ceramics
- present
- electron conductive
- ceramics
- 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 - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
- H01S3/03—Constructional details of gas laser discharge tubes
- H01S3/038—Electrodes, e.g. special shape, configuration or composition
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Lasers (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は新規なペロブスカイト型酸化物構造をもつ電
子導伝性セラミックスに関し、特にガス分離、気相電解
及び高温電気化学装置用電極材料などに有利に適用され
る安価な電子導伝性セラミックスに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a novel electron conductive ceramic having a perovskite-type oxide structure, and particularly to an electrode material for gas separation, gas phase electrolysis, and high-temperature electrochemical devices. The present invention relates to an inexpensive electron conductive ceramic which is advantageously applied.
〔従来の技術〕 従来、電子導伝性セラミックスよりなる電極材料とし
ては電子導伝性を高めるために、LaSrO3,LaMnO3ような
高価なLa含有材料が用いられている。[Prior art] Conventionally, expensive La-containing materials such as LaSrO 3 and LaMnO 3 have been used as electrode materials made of electron conductive ceramics in order to enhance electron conductivity.
前述したように従来の電子導伝性セラミックスは高価
なLaを含有しているため、セラミックスの原価が高いと
いう問題点を有していた。As described above, conventional electron conductive ceramics contain expensive La, and thus have a problem that the cost of the ceramics is high.
そこで本発明は比較的安価な材料によって製造するこ
とができ、かつ従来の電子導伝性セラミックスと同等以
上の電子導伝率を有する新規なペロブスカイト型酸化物
構造を有する電子導伝性セラミックスを提供しようとす
るものである。Accordingly, the present invention provides a novel electron-conductive ceramic having a perovskite-type oxide structure that can be manufactured from relatively inexpensive materials and has an electronic conductivity equal to or higher than that of conventional electron-conductive ceramics. What you want to do.
本発明は Ca1-xCexMnyO3- δ なる組成をもち、ペロブスカイト型酸化物よりなる電子
導伝性セラミックスである。The present invention relates to Ca 1-x Ce x Mn y O 3- δ This is an electron-conductive ceramic having a composition and a perovskite oxide.
なお、上記組成中のδは酸素欠陥といわれるもので、
この値はx,yの値、製造時の温度及び酸素分圧によって
変化するが、通常−0.5＜δ＜＋0.5の値を採る。Incidentally, δ in the above composition is what is called an oxygen defect,
This value varies depending on the values of x and y, the temperature at the time of production, and the oxygen partial pressure, and usually takes a value of -0.5 <δ <+0.5.
すなわち、本発明は上記構成に示したペロブスカイト
型酸化物構造を有する電子導伝性セラミックスであっ
て、従来の電子導伝性セラミックスにおけるように高価
なLaを含まず、主成分として極めて安価なCaと、高価で
あるが極く少量のCeを含むものであって、全体として従
来のLaを含む電子導伝性セラミックスより大幅に安価な
ものである。That is, the present invention relates to an electron conductive ceramic having the perovskite type oxide structure shown in the above structure, which does not contain expensive La as in the conventional electron conductive ceramic and has extremely low Ca as a main component. However, it is expensive but contains a very small amount of Ce, and as a whole, is much cheaper than conventional electron conductive ceramics containing La.
Ca1-xCexMnyO3-δの組成において、x,yの値を種々変
更してＸ線回析パターンにより結晶構造を、また、直流
四端子法により導伝率を測定した結果、ｘが０〜0.20の
範囲でペロブスカイト型酸化物構造となること、またｘ
＝0.01〜0.20,y＝0.8〜1.2の範囲で電子導伝率が高くな
ることを確認し、本発明の電子導伝性セラミックスの組
成を特定した。In the composition of Ca 1-x Ce x Mn y O 3- δ, the results of measuring the crystal structure by X-ray diffraction pattern and the conductivity by DC four-terminal method by changing the values of x and y variously , X has a perovskite type oxide structure in the range of 0 to 0.20, and x
= 0.01 to 0.20, y = 0.8 to 1.2, it was confirmed that the electron conductivity was high, and the composition of the electron conductive ceramic of the present invention was specified.
本発明の電子導伝性セラミックスは、原料としてCaCO
3,CeO2,MnCO3を特定割合で混合し、その混合物を仮焼し
た後、バインダーを添加混合して加圧力100kg/cm2以上
で加圧成形し、1300〜1500℃で焼成することによって得
られる。The electron conductive ceramics of the present invention has
3, CeO 2, were mixed in a specific ratio to MnCO 3, its After the mixture was calcined, was added and mixed a binder was pressure-molded under a pressure 100 kg / cm 2 or more, by firing at 1300 to 1500 ° C. can get.
以下、本発明の電子導伝性セラミックスの具体例につ
き、その電子導伝率につき説明する。Hereinafter, specific examples of the electron conductive ceramic of the present invention will be described with respect to the electron conductivity.
全体の組成としてCa1-xCexMnyO3（すなわちｙ＝1.0
5）とし、この材料を角柱状に成形し、直流４端子法
で、高温における空気中での電子導伝率を測定し、この
ときの代表例を第１図に示す。 Ca 1-x Ce x Mn y O 3 as the overall composition (i.e. y = 1.0
This material was formed into a prismatic shape, and the electron conductivity in air at a high temperature was measured by a DC four-terminal method. A typical example at this time is shown in FIG.
また、公知のLa1-xSrxMnO3なる組成の電子導伝性セラ
ミックスのｘ＝0.1のときの電子導伝率を第２図に示
す。FIG. 2 shows the electron conductivity of a known electron conductive ceramic having a composition of La 1-x Sr x MnO 3 when x = 0.1.
第１図と第２図の対比より、本発明電子導伝性セラミ
ックスCa1-xCexMnO3において、ｘ＝0.15のときの電子導
伝率は、公知のLa1-xSrxMnO3（ｘ＝0.1）なる組成の電
子導伝性セラミックスのそれよりもやゝ上まわることが
判る。From the comparison between FIG. 1 and FIG. 2, in the electron conductive ceramics Ca 1-x Ce x MnO 3 of the present invention, the electron conductivity when x = 0.15 is known La 1-x Sr x MnO 3. It can be seen that the value is slightly higher than that of the electron conductive ceramics having the composition (x = 0.1).
本発明により、電子導伝率がLa1-xMxMnO3系セラミッ
クスに匹敵するも、安価な電子導伝性セラミックスが提
供される。The present invention also electroconductive rate comparable to La 1-x M x MnO 3 type ceramics, inexpensive electron conductive ceramics is provided.
第１図は本発明の代表的な電子導伝性セラミックスの電
子導伝率を示す図表である。第２図は公知のLa0.9Sr0.1
MnO3の電子導伝率を示す図表である。FIG. 1 is a table showing the electron conductivity of a typical electron conductive ceramic of the present invention. FIG. 2 shows a known La 0.9 Sr 0.1
4 is a table showing the electron conductivity of MnO 3 .
フロントページの続き (72)発明者 江坂 享男 鳥取県鳥取市湖山町西１丁目357 (72)発明者 佐竹 徳己 兵庫県神戸市兵庫区和田崎町１丁目１番 １号 三菱重工業株式会社神戸造船所内 (72)発明者 冨田 信義 兵庫県神戸市兵庫区和田崎町１丁目１番 １号 三菱重工業株式会社神戸造船所内 (72)発明者 石橋 勝 兵庫県高砂市荒井町新浜２丁目１番１号 三菱重工業株式会社高砂研究所内 (56)参考文献 特開 昭49−76097（ＪＰ，Ａ)Continuation of the front page (72) Inventor Takao Esaka 1-357, Koyamacho Nishi, Tottori-shi, Tottori Prefecture (72) Inventor Tokomi Satake 1-1-1, Wadazakicho, Hyogo-ku, Kobe-shi, Hyogo Prefecture Mitsubishi Heavy Industries, Ltd. Kobe Inside the shipyard (72) Inventor Nobuyoshi Tomita 1-1-1, Wadazakicho, Hyogo-ku, Kobe City, Hyogo Prefecture Inside the Mitsubishi Heavy Industries, Ltd.Kobe Shipyard (72) Inventor Masaru Ishibashi 2-1-1, Aramachi-Niihama, Araimachi, Takasago-shi, Hyogo Prefecture Inside the Takasago Research Laboratory, Mitsubishi Heavy Industries, Ltd. (56) References JP-A-49-76097 (JP, A)
Claims (1)
を特徴とする電子導伝性セラミックス。(1) Ca 1-x Ce x Mn y O 3- δ An electronically conductive ceramic having a composition of: perovskite oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63253691A JP2580283B2 (en) | 1988-10-11 | 1988-10-11 | Electronic conductive ceramics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63253691A JP2580283B2 (en) | 1988-10-11 | 1988-10-11 | Electronic conductive ceramics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02102164A JPH02102164A (en) | 1990-04-13 |
| JP2580283B2 true JP2580283B2 (en) | 1997-02-12 |
Family
ID=17254807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63253691A Expired - Fee Related JP2580283B2 (en) | 1988-10-11 | 1988-10-11 | Electronic conductive ceramics |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2580283B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5773350B2 (en) * | 2009-12-11 | 2015-09-02 | 国立大学法人北海道大学 | Method for storing and / or separating oxygen using brown mirrorite type manganese oxide |
-
1988
- 1988-10-11 JP JP63253691A patent/JP2580283B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02102164A (en) | 1990-04-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |