研究了800 ℃下稀土元素对铁素体合金高温导电性和抗氧化性的影响,同时选择合适的合金元素组成,用SEM,EPMA,SIMS和GDS等技术来分析主要元素和微量元素对氧化膜生长和导电性影响. 在合金中添加不同种类和不同量的稀土元素对合金的抗氧化性和导电性的影响较大,添加Y和La可以大幅度地提高电导率,而添加Ce对电导率的影响不大. 考虑耐氧化性、高温导电性和热膨胀系数,含有0.06%Y的Fe-22Cr-0.5Mn合金更适合做SOFC的连接体.
参考文献
| [1] | Winkler W;Koeppen J .Design and operation of interconnectors for solid oxide fuel cell stacks[J].Journal of Power Sources,1996,61:201. |
| [2] | Tu Hengyong;Ulrich Stimming .Advances,aging mechanisms and lifetime in solid-oxide fuel cells[J].Journal of Power Sources,2004,127:284. |
| [3] | Weber A;Ivers-Tiffée E .Materials and concepts for solid oxide fuel cells (SOFCs) in stationary and mobile applications[J].Journal of Power Sources,2004,127:273. |
| [4] | Desouza S.;Dejonghe LC.;Visco SJ. .THIN-FILM SOLID OXIDE FUEL CELL WITH HIGH PERFORMANCE AT LOW-TEMPERATURE[J].Solid state ionics,1997(1/2):57-61. |
| [5] | De Souza S;Visco S J;De Jonghe L C .Reduced-temperature solid oxide fuel cell based on YSZ thin-film electrolyte[J].Journal of the Electrochemical Society,1997,144:L35. |
| [6] | Ishihara H;Matsuda H;Takita Y .Doped LaGaO3 perovskite type oxide as a new oxide ionic conductor[J].Journal of the American Chemical Society,1994,116:3801. |
| [7] | Badwal SPS.;Foger K.;Ramprakash Y.;Zhang JP.;Deller R. .INTERACTION BETWEEN CHROMIA FORMING ALLOY INTERCONNECTS AND AIR ELECTRODE OF SOLID OXIDE FUEL CELLS[J].Solid state ionics,1997(3/4):297-310. |
| [8] | Brylewski T.;Maruyama T.;Przybylski K.;Nanko M. .Application of Fe-16Cr ferritic alloy to interconnector for a solid oxide fuel cell[J].Solid state ionics,2001(2):131-150. |
| [9] | Furusaki A.;Furuichi R.;Konno H. .PEROVSKITE-TYPE LANTHANUM CHROMIUM-BASED OXIDE FILMS PREPARED BY ULTRASONIC SPRAY PYROLYSIS[J].Journal of Materials Science,1995(11):2829-2834. |
| [10] | Oishi N;Namikawa T;Yamazaki Y .Oxidation behavior of a La-coated chromia-forming alloy and the electrical property of oxide scales[J].Surface and Coatings Technology,2000,132:58. |
| [11] | Yokokawa H;Sakai N;Horita T;Yamaji K .Recent developments in solid oxide fuel cell materials[J].Fuel Cells,2001,1(02):117. |
| [12] | Pint B A .Experimental observations in support of the dynamic-segregation theory to explain the reactive-element effect[J].Oxidation of Metals,1996,45:1. |
| [13] | Samsonov G V.The Oxide Handbook[M].New York:IFI/Plenum Data Company,1982:192. |
| [14] | Zhu WZ.;Deevi SC. .Development of interconnect materials for solid oxide fuel cells [Review][J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2003(1/2):227-243. |
| [15] | Larring Y;Haugsrud R;Norby T .HT corrosion of a Cr-5wt% Fe-1wt% Y2O3 alloy and conductivity of the oxide scale[J].Journal of the Electrochemical Society,2003,150:B374. |
| [16] | Steels B C H .Materials for IT-SOFC stacks:35 years R&D:the inevitability of gradualness[J].Solid-State Ionicis,2000,134:3. |
| [17] | Huang KQ.;Goodenough JB.;Hou PY. .Characterization of iron-based alloy interconnects for reduced temperature solid oxide fuel cells[J].Solid state ionics,2000(1/4):237-250. |
| [18] | Ueda T;Ohno H;Toji A.Development of ferritic Fe-Cr alloy for SOFC separator[A].Switzerland,2002:281. |
| [19] | Albellan J P.Long term oxidation behavior and compatibility with contact materials of new developed ferritic interconnector steel,5th European SOFC Forum[M].Switzerland,2002:248. |
| [20] | Hou P Y;Stringer J .The effect of reactive element additions on the selective oxidation,growth and adhesion of chromia scales[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,1995,202:1. |
| [21] | Huang K;Hou P Y;Goodenough J B .Reduced area specific resistance for iron-based metallic interconnectes by surface oxide coatings[J].Materials Research Bulletin,2001,36:81. |
| [22] | Horita T;Xiong Y P;Kishimoto H;Yamaji K,Sakai N,Yokokawa H .Application of Fe-Cr alloys to solid oxide fuel cells for cost-reduction:Oxidation behavior of alloys in methane fuel[J].Journal of Power Sources,2004,131:293. |
| [23] | Holt A;Kofstad P .Electrical conductivity and defect structure of Cr2O3.II.Reduced temperatures (T＜1000 ℃)[J].Solid-State Ionicis,1994,69:137. |
| [24] | Sakai N;Horita T;Xiong YP;Yamaji K;Kishimoto H;Brito ME;Yokokawa H;Maruyama T .Structure and transport property of manganese-chromium-iron oxide as a main compound in oxide scales of alloy interconnects for SOFCs[J].Solid state ionics,2005(7/8):681-686. |
| [25] | Chen X;Hou PY;Jacobson CP;Visco SJ;De Jonghe LC .Protective coating on stainless steel interconnect for SOFCs: oxidation kinetics and electrical properties[J].Solid state ionics,2005(5/6):425-433. |
| [26] | Huang KQ.;Goodenough JB.;Tichy RS. .Superior perovskite oxide-ion conductor; strontium- and magnesium-doped LaGaO3: I, phase relationships and electrical properties[J].Journal of the American Ceramic Society,1998(10):2565-2575. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%