JPH0453942B2 - - Google Patents
Info
- Publication number
- JPH0453942B2 JPH0453942B2 JP62020413A JP2041387A JPH0453942B2 JP H0453942 B2 JPH0453942 B2 JP H0453942B2 JP 62020413 A JP62020413 A JP 62020413A JP 2041387 A JP2041387 A JP 2041387A JP H0453942 B2 JPH0453942 B2 JP H0453942B2
- Authority
- JP
- Japan
- Prior art keywords
- molten carbonate
- aluminum
- resistance
- less
- corrosion
- 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
Links
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 29
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 21
- 229910052782 aluminium Inorganic materials 0.000 claims description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 229910045601 alloy Inorganic materials 0.000 claims description 12
- 239000000956 alloy Substances 0.000 claims description 12
- 239000000446 fuel Substances 0.000 claims description 10
- 239000011651 chromium Substances 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 239000011572 manganese Substances 0.000 claims description 6
- 229910052727 yttrium Inorganic materials 0.000 claims description 6
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 6
- 229910052684 Cerium Inorganic materials 0.000 claims description 5
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 5
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 5
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052746 lanthanum Inorganic materials 0.000 claims description 5
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 5
- 229910052706 scandium Inorganic materials 0.000 claims description 5
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 claims description 5
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 description 21
- 230000007797 corrosion Effects 0.000 description 21
- 239000000463 material Substances 0.000 description 8
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011253 protective coating Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- HYHCSLBZRBJJCH-UHFFFAOYSA-N sodium polysulfide Chemical compound [Na+].S HYHCSLBZRBJJCH-UHFFFAOYSA-N 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229910018138 Al-Y Inorganic materials 0.000 description 1
- 229910017060 Fe Cr Inorganic materials 0.000 description 1
- 229910002544 Fe-Cr Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005486 sulfidation Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Fuel Cell (AREA)
Description
［産業上の利用分野］
本発明は耐食性に優れた溶融炭酸塩型燃料電池
用鉄基合金に関する。
［従来の技術］
第２図に、溶融炭酸塩型燃料電池の構成を示
す。電解質である炭酸塩を保持した電解質板を中
心に、カソード電極とアノード電極がその両側に
ある。カソード側には、空気と炭酸ガスを、アノ
ード側には、水素と炭酸ガスを供給して発電を行
なう。セパレータは、これらガスの流路を形成す
るとともに、発電された電気を集電するためにそ
れぞれの電極の外側に設けられる。このセパレー
タとしては、富士時報55（1982）p600〜604に示
されているように主にSUS316が使われてきた。
しかし、高温の溶融炭酸塩は腐食性が極めて強
く、SUS316もこれに耐えられないのが現状であ
る。これに対し、ジヤーナル オブ エレクトロ
ケミカル ソサヤテイ（Journal of
Electrochemical Society）125（1978）p1799〜
1800に示されているように防食のためにはアルミ
のコーテイングが有効である。しかし、アルミコ
ーテイングにより生成した保護皮膜のAl2O3は、
電気抵抗が高い。従つて、セパレータ全面にアル
ミコーテイング処理を行なつた場合、電池の内部
抵抗が増大し、電池性能が低下することが予想さ
れる。そこで、Al2O3を、保護皮膜として形成し
ない高耐食性セパレータが必要となる。また、特
開昭57−149458に記載されているようにFe−Cr
−Ni合金にアルミニウムとイツトリウムを添加
して溶融多硫化ナトリウムに対して優れた耐食性
を有する合金はあつた。しかし、上記合金は溶融
多硫化ナトリウム（200〜400℃）に対する耐食性
を向上させたもので溶融炭酸塩（650〜750℃）に
対する耐食性については配慮されたものではな
い。
［発明が解決しようとする問題点］
上記技術中、ジヤーナル オブ エレクトロケ
ミカル ソサヤテイに示されるアルミコーテイン
グにより耐食性を向上させる方法は、耐食性保護
被膜のAl2O3により電池の内部抵抗が高くなるこ
とが考えられる。また、上記技術中、溶融多硫化
ナトリウムに対する耐食性合金（Fe−Cr−Ni−
Al−Ｙ）は溶融炭酸塩に対する耐食性に対する
検討がなされていない。
本発明は、電気抵抗を大きくする様な耐食性保
護被膜を合金に施すことなく、合金自体が溶融炭
酸塩に対する耐食性を持ち、しかも、加工性や溶
接性の良い溶融炭酸塩型燃料電池用鉄基合金を提
供することを目的とする。
［問題点を解決するための手段］
本発明の溶融炭酸塩型燃料電池用鉄基合金は重
量で炭素(C)：0.15％以下、けい素（Si）：１％以
下、マンガン（Mn）：２％以下、ニツケル
（Ni）：15〜35％、クロム（Cr）：15〜35％、アル
ミニウム（Al）：0.1〜0.9％を含有すると共に、
イツトリウム（Ｙ）、ランタン（La）、セリウム
（Ce）、スカンジウム（Sc）、ガドリニウム（Gd）
およびジルコニウム（Zr）のうちの１種を0.5％
以下含有し、残部が鉄（Fe）及び不可避的不純
物からなることを特徴とする。
［作用］
以下、本発明による溶融炭酸塩型燃料電池用鉄
基合金の構成成分を上記のように限定した理由に
ついて説明する。
炭素は、オーステナイト形成元素であるが、
0.15％を超えて含有すると熱間加工性及び耐酸化
性を悪くするので0.15％以下とした。
けい素は、高温強度及び耐酸化性を改善する効
果があるが、過度に存在すると溶接性及び加工性
を阻害するので上限を１％とした。
マンガン（Mn）はオーステナイト形成元素で
あるが、耐酸化性をやや悪くするので低い方が好
ましい。通常のステンレス綱に含有されている程
度とし、２％以下とした。
ニツケル（Ni）はオーステナイト系ステンレ
ス綱の基本的元素の一つである。オーステナイト
組織を維持するため下限を15％とした。一方、35
％を超える含有は耐硫化性を劣化させるため好ま
しくない。
クロム（Cr）は、耐溶融炭酸塩性の基本とな
る成分で最低でも15％必要だが、35％を超えて添
加しても効果が飽和する。
次に、アルミニウム（Al）の含有について述
べる。第１図に示すようにアルミニウムは１％以
上の場合、耐溶融炭酸塩性の改善に有効である
が、0.9％以下の単独添加の場合には逆に耐溶融
炭酸塩性が悪くなることがわかつた。よつて、耐
溶融炭酸塩性を良くするためにはアルミニウムを
１％以上にすればよいことになるけれども、そう
すると合金の加工性や溶接性が悪くなる。ところ
で、第１図に示す様に、イツトリウム（Ｙ）、ラ
ンタン（La）、セリウム（Ce）、スカンジウム
（Sc）、ガドリニウム（Gd）およびジルコニウム
（Zr）のうちの１種を0.5％以下添加すると共にア
ルミニウムを添加すると、アルミニウムの含有量
が0.1％〜0.9％であつても、耐溶融炭酸塩性は良
好であることがわかつた。この知見に基づき本発
明では、加工性や溶接性の悪化を招くことなく耐
溶融炭酸塩性を良好ならしめるために、アルミニ
ウムの含有量を0.1％〜0.9％とした。
イツトリウム（Ｙ）、ランタン（La）、セリウ
ム（Ce）、スカンジウム（Sc）、ジルコニウム
（Zr）及びガドリニウム（Gd）は、そのうちの１
種を添加すると、上記のように、アルミニウム
（Al）と複合作用して耐溶融炭酸塩性の向上に効
果を発揮する。しかし、その含有量が0.5％を超
えると加工性が低下するので、上限を0.5％とし
た。
［実施例］
以下、本発明の実施例を第１図により説明す
る。第１図は第１表に示す各No.の供試材を750℃
で第２表に示す腐食条件で溶融炭酸塩を塗布して
試験した結果を示すものである。
[Industrial Field of Application] The present invention relates to an iron-based alloy for molten carbonate fuel cells that has excellent corrosion resistance. [Prior Art] FIG. 2 shows the configuration of a molten carbonate fuel cell. A cathode electrode and an anode electrode are located on either side of an electrolyte plate that holds carbonate as an electrolyte. Air and carbon dioxide gas are supplied to the cathode side, and hydrogen and carbon dioxide gas are supplied to the anode side to generate electricity. A separator is provided outside each electrode to form a flow path for these gases and to collect generated electricity. As shown in Fuji Jiho 55 (1982) p600-604, SUS316 has been mainly used as this separator.
However, high-temperature molten carbonate is extremely corrosive, and SUS316 cannot currently withstand it. In contrast, the Journal of Electrochemical Society
Electrochemical Society) 125 (1978) p1799~
As shown in 1800, aluminum coating is effective for corrosion prevention. However, the protective film Al 2 O 3 produced by aluminum coating is
High electrical resistance. Therefore, if the entire surface of the separator is coated with aluminum, it is expected that the internal resistance of the battery will increase and the battery performance will deteriorate. Therefore, a highly corrosion-resistant separator that does not form Al 2 O 3 as a protective film is required. In addition, as described in JP-A-57-149458, Fe-Cr
An alloy with excellent corrosion resistance against molten sodium polysulfide was created by adding aluminum and yttrium to the -Ni alloy. However, the above alloy has improved corrosion resistance against molten sodium polysulfide (200-400°C), but no consideration has been given to corrosion resistance against molten carbonate (650-750°C). [Problems to be Solved by the Invention] Among the above-mentioned techniques, the method of improving corrosion resistance using aluminum coating as shown in the Journal of Electrochemical Society has the disadvantage that the internal resistance of the battery may increase due to Al 2 O 3 in the corrosion-resistant protective coating. Conceivable. In addition, among the above technologies, corrosion resistant alloy (Fe-Cr-Ni-
Al-Y) has not been investigated for corrosion resistance against molten carbonate. The present invention provides an iron base for molten carbonate fuel cells that allows the alloy itself to have corrosion resistance against molten carbonate without applying a corrosion-resistant protective coating that increases electrical resistance, and has good workability and weldability. The purpose is to provide alloys. [Means for Solving the Problems] The iron-based alloy for molten carbonate fuel cells of the present invention contains carbon (C): 0.15% or less, silicon (Si): 1% or less, and manganese (Mn): Contains 2% or less, nickel (Ni): 15-35%, chromium (Cr): 15-35%, aluminum (Al): 0.1-0.9%,
Yttrium (Y), lanthanum (La), cerium (Ce), scandium (Sc), gadolinium (Gd)
and 0.5% of one of zirconium (Zr)
It is characterized by containing the following: with the remainder consisting of iron (Fe) and unavoidable impurities. [Function] The reason why the constituent components of the iron-based alloy for molten carbonate fuel cells according to the present invention are limited as described above will be explained below. Carbon is an austenite-forming element,
If the content exceeds 0.15%, hot workability and oxidation resistance will deteriorate, so the content was set to 0.15% or less. Silicon has the effect of improving high-temperature strength and oxidation resistance, but if present in excess, it impedes weldability and workability, so the upper limit was set at 1%. Manganese (Mn) is an austenite-forming element, but it slightly deteriorates oxidation resistance, so a lower amount is preferable. The content was set to the level that is contained in ordinary stainless steel steel, and was set at 2% or less. Nickel (Ni) is one of the basic elements of austenitic stainless steels. The lower limit was set at 15% to maintain the austenite structure. On the other hand, 35
% is not preferable because it deteriorates sulfidation resistance. Chromium (Cr) is a basic component for molten carbonate resistance and requires a minimum of 15%, but the effect will be saturated even if it is added in excess of 35%. Next, the content of aluminum (Al) will be described. As shown in Figure 1, aluminum is effective in improving molten carbonate resistance when it is added at 1% or more, but when added alone at 0.9% or less, molten carbonate resistance may deteriorate. I understand. Therefore, in order to improve the molten carbonate resistance, it is sufficient to increase the aluminum content to 1% or more, but this will deteriorate the workability and weldability of the alloy. By the way, as shown in Figure 1, 0.5% or less of one of yttrium (Y), lanthanum (La), cerium (Ce), scandium (Sc), gadolinium (Gd), and zirconium (Zr) is added. It was found that when aluminum was added at the same time, the molten carbonate resistance was good even when the aluminum content was 0.1% to 0.9%. Based on this knowledge, in the present invention, the aluminum content is set to 0.1% to 0.9% in order to improve molten carbonate resistance without deteriorating workability or weldability. Yttrium (Y), lanthanum (La), cerium (Ce), scandium (Sc), zirconium (Zr) and gadolinium (Gd) are one of them.
As mentioned above, when seeds are added, they act in combination with aluminum (Al) and are effective in improving molten carbonate resistance. However, if the content exceeds 0.5%, processability decreases, so the upper limit was set at 0.5%. [Example] Hereinafter, an example of the present invention will be described with reference to FIG. Figure 1 shows the test materials of each No. shown in Table 1 heated to 750°C.
This table shows the results of tests conducted by applying molten carbonate under the corrosion conditions shown in Table 2.
【表】【table】
【表】【table】
【表】【table】
【表】
アルミニウム（Al）の単独添加材はアルミニ
ウム1.0％以下の添加では溶融炭酸塩に対する耐
食性が低下している。また、現在溶融炭酸塩型燃
料電池用セパレータ材として主に用いられている
SUS316L（供試材No.５）及びSUS310S（供試材No.
６）の耐食性が、アルミニウム量が０の比較材No.
１と減肉厚さがほとんど同じであることから、耐
食性には20〜30％の範囲でニツケル量の影響はな
いものと思われる。一方、黒丸で示した本発明材
（No.４、No.７〜No.11）の対溶融炭酸塩耐食性は、
アルミニウム（Al）が約0.4％しか含まれていな
いにもかかわらず、アルミニウムを１％以上含有
させた場合と同様に、向上している。すなわち、
耐溶融炭素塩性を向上させるためにアルミニウム
を１％以下でFe−Cr−Ni基合金に加える場合に
はイツトリウム（Ｙ）、ランタン（La）、セリウ
ム（Ce）、スカンジウム（Sc）、ガドリニウム
（Gd）又はジルコニウム（Zr）を同時添加するこ
とが有効であることがわかる。
第３図は、第２表の条件で溶融炭酸塩中に浸漬
して腐食試験を行なつた結果を示したものであ
る。本発明材は溶融炭酸塩による腐食の進行が抑
制されており、耐食性が向上している。
前記試験中100時間試験材の断面写真と腐食層
内層の分析結果によれば、生成腐食層は内層と外
層より成つており、外層はFe系の酸化物よりな
つており、また、内層はCrあるいはFe系の酸化
物より成つている。また、アルミニウム（Al2O3
として）の濃縮層は認められずAl2O3の安定な保
護皮膜は形成されていない。
［発明の効果］
本発明によれば、溶融炭酸塩に対する耐食性の
良好な溶融炭酸塩型燃料電池用鉄基合金を提供す
ることができるので、溶融炭酸塩型燃料電池用セ
パレータ及びカレントコレクター等に用いた場合
プラントの長寿命化が計れる。[Table] When aluminum (Al) is added as a single additive, the corrosion resistance against molten carbonate decreases when the aluminum content is less than 1.0%. In addition, it is currently mainly used as a separator material for molten carbonate fuel cells.
SUS316L (sample material No. 5) and SUS310S (sample material No.
Comparative material No. 6) with zero aluminum content has corrosion resistance.
Since the thinning thickness is almost the same as that of No. 1, it seems that the corrosion resistance is not affected by the amount of nickel within the range of 20 to 30%. On the other hand, the corrosion resistance of the present invention materials (No. 4, No. 7 to No. 11) indicated by black circles against molten carbonate is as follows:
Although the aluminum (Al) content is only about 0.4%, the improvement is the same as when the aluminum content is 1% or more. That is,
When adding 1% or less aluminum to a Fe-Cr-Ni base alloy to improve molten carbon salt resistance, yttrium (Y), lanthanum (La), cerium (Ce), scandium (Sc), and gadolinium ( It can be seen that simultaneous addition of Gd) or zirconium (Zr) is effective. FIG. 3 shows the results of a corrosion test conducted by immersing the specimen in molten carbonate under the conditions shown in Table 2. In the material of the present invention, the progress of corrosion due to molten carbonate is suppressed, and the corrosion resistance is improved. According to the cross-sectional photograph of the material tested for 100 hours during the test and the analysis results of the inner layer of the corroded layer, the formed corroded layer consists of an inner layer and an outer layer, the outer layer is made of Fe-based oxide, and the inner layer is made of Cr. Or it is made of Fe-based oxide. Also, aluminum (Al 2 O 3
No concentrated layer of Al 2 O 3 was observed, and no stable protective film of Al 2 O 3 was formed. [Effects of the Invention] According to the present invention, it is possible to provide an iron-based alloy for molten carbonate fuel cells that has good corrosion resistance against molten carbonate, so it is suitable for separators, current collectors, etc. for molten carbonate fuel cells. If used, the life of the plant can be extended.
第２図は溶融炭酸塩型燃料電池の構成図、第１
図及び第３図は本発明材および比較のための他の
供試材の溶融炭酸塩による腐食試験結果を示した
図である。
Figure 2 is a configuration diagram of a molten carbonate fuel cell.
Figures 3 and 3 are diagrams showing the results of corrosion tests using molten carbonate on materials of the present invention and other test materials for comparison.
Claims (1)
１％以下、マンガン（Mn）：２％以下、ニツケ
ル（Ni）：15〜35％、クロム（Cr）：15〜35％、
アルミニウム（Al）：0.1〜0.9％を含有すると共
に、イツトリウム（Ｙ）、ランタン（La）、セリ
ウム（Ce）、スカンジウム（Sc）、ガドリニウム
（Gd）およびジルコニウム（Zr）のうちの１種を
0.5％以下含有し、残部が鉄（Fe）及び不可避的
不純物からなることを特徴とする溶融炭酸塩型燃
料電池用鉄基合金。1 Carbon (C): 0.15% or less, silicon (Si):
1% or less, Manganese (Mn): 2% or less, Nickel (Ni): 15-35%, Chromium (Cr): 15-35%,
Aluminum (Al): Contains 0.1 to 0.9%, and also contains one of yttrium (Y), lanthanum (La), cerium (Ce), scandium (Sc), gadolinium (Gd), and zirconium (Zr).
An iron-based alloy for molten carbonate fuel cells, characterized in that it contains 0.5% or less, with the remainder consisting of iron (Fe) and unavoidable impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62020413A JPS63190143A (en) | 1987-02-02 | 1987-02-02 | Iron-based alloy for molten carbonate fuel cells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62020413A JPS63190143A (en) | 1987-02-02 | 1987-02-02 | Iron-based alloy for molten carbonate fuel cells |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63190143A JPS63190143A (en) | 1988-08-05 |
| JPH0453942B2 true JPH0453942B2 (en) | 1992-08-28 |
Family
ID=12026352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62020413A Granted JPS63190143A (en) | 1987-02-02 | 1987-02-02 | Iron-based alloy for molten carbonate fuel cells |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63190143A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPP042597A0 (en) * | 1997-11-17 | 1997-12-11 | Ceramic Fuel Cells Limited | A heat resistant steel |
| CN101942607B (en) * | 2010-10-21 | 2012-11-14 | 无锡市晶瑜冶金机械有限公司 | Heat-resistant steel material for water cooled rolls of normalizing furnace |
-
1987
- 1987-02-02 JP JP62020413A patent/JPS63190143A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63190143A (en) | 1988-08-05 |
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