以泡沫镍板为基材,通过粉末包埋法渗铬,制备出网状镍铬电热合金,并通过快速寿命实验对其在真空中的使用寿命进行评价.结果表明:通过粉末包埋法渗铬能获得成分均匀,具有高表观电阻率的网状Nicr20(质量分数)电热合金;在真空压强优于5×10-2Pa,功率20W下,网状Nicr20电热合金经过25000次通断电寿命实验后其室温电阻减小值小于8%.SEM及EDS表明网状镍铬电热合金在寿命实验中铬向外扩散在合金表面形成了致密的氧化铬膜,同时在氧化膜/金属界面有孔洞生成.
参考文献
| [1] | Edward J. Cookson;Donald E. Floyd;Albert J. Shih .Design, manufacture, and analysis of metal foam electrical resistance heater[J].International Journal of Mechanical Sciences,2006(11):1314-1322. |
| [2] | Karima E. Amori;Hussein Alwan Laibi .Experimental and numerical analysis of electrical metal foam heater[J].Energy,2011(7):4524-4530. |
| [3] | Gunnar Walther;Burghardt Kloden;Tilo Buttner;Thomas Weissgarber;Bernd Kieback;Alexander Bohm;Dirk Naumann;Shadi Saberi;Lloyd Timberg .A New Class of High Temperature and Corrosion Resistant Nickel-Based Open-Cell Foams[J].Advanced Engineering Materials,2008(9):803-811. |
| [4] | A.M. Hodge;D.C. Dunand .Synthesis of nickel-aluminide foams by pack-aluminization of nickel foams[J].Intermetallics,2001(7):581-589. |
| [5] | Heeman Choe;David C. Dunand .Synthesis, structure, and mechanical properties of Ni–Al and Ni–Cr–Al superalloy foams[J].Acta materialia,2004(5):1283-1295. |
| [6] | GIBSON L J;ASHABY M F.Cellular Solid:Structure and Properties[M].Cambridge:Cambridge U-niversity Press,1997:6-8. |
| [7] | 段德莉 .肼热分解式空间推力器用特种电热材料研究[D].沈阳:中国科学院研究生院,2006. |
| [8] | 刘培生;付超;李铁藩 等.电沉积法制备泡沫Ni的组织结构[J].金属学报,1999,35:509. |
| [9] | LANGLOIS S;COEURET F .Flow-through and flow-by porous electrodes of nickel foam I:Material characterization[J].Journal of Applied Electrochemistry,1989,19:43-50. |
| [10] | 黄培云.粉末冶金原理[M].北京:冶金工业出版社,1997 |
| [11] | 王曦,虞吉林.泡沫铝的单向力学行为[J].实验力学,2001(04):438-443. |
| [12] | V. Goussery;Y. Bienvenu;S. Forest;A.-F. Gourgues;C. Colin;J.-D. Bortout .Grain Size Effects on the Mechanical Behavior of Open-cell Nickel Foams[J].Advanced Engineering Materials,2004(6):432-439. |
| [13] | P. Kenesei;Cs. Kadar;Zs. Rajkovits;J. Lendvai .The influence of cell-size distribution on the plastic deformation in metal foams[J].Scripta materialia,2004(2):295-300. |
| [14] | Nikolaos Michailidis;Fani Stergioudi;Haidar Omar;Dimitrios N. Tsipas .Investigation of the Mechanical Behavior of Open-CellNi Foams by Experimental and FEM Procedures[J].Advanced Engineering Materials,2008(12):1122-1126. |
| [15] | Liu PS.;Liang KM.;Gu SR.;Yu Q.;Li TF.;Fu C.;Chen H. .Relationship between apparent electrical-conductivity and preparation conditions for nickel foam[J].Journal of Applied Electrochemistry,2000(10):1183-1186. |
| [16] | 李美栓.金属的高温腐蚀[M].北京:冶金工业出版社,2001:114-120. |
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