为得到制备Ag/NiFe2O4金属陶瓷惰性阳极的最佳工艺条件,利用正交试验法确定合适的工艺条件.考虑了主要影响阳极制品性能的五个因素,每个因素又设计四个水平,通过正交分析研究了各因素对制品密度、导电性、抗腐蚀性的影响.实验结果表明:Ag含量越多,导电性越好,但腐蚀率提高;提高烧结温度或延长烧结时间,有利于提高制品的密度,但导致Ag的溢出,抗腐蚀能力下降;压制压力越大,制品的致密度、抗腐蚀能力提高;粒度组成中大颗粒尺寸不能太大,否则腐蚀率增大、电导率下降.最佳工艺条件为:压制压力160 MPa;烧结温度1350 ℃;保温时间6 h;原料中主颗粒直径为0.50～0.355 mm;Ag含量为10%.
参考文献
| [1] | Donald R.Sadoway .Inert Anodes for the Hall-Heroult Cell: The Ultimate Materials Challenge[J].JOM,2001(5):34-35. |
| [2] | KVANDE H.Inert electrodes in aluminum electrolysis cells[A].San Diego:Minerals,Metals and Materials Society,1999:369-376. |
| [3] | PAWLEK R P.Inter anodest an update[A].Seattle:Minerals,Metals and Materials Society,2002:449-456. |
| [4] | SEKHAR J A;LIU J;DENG H.Graded non-consumable anode materials[A].San Antonio:Minerals,Metals and Materials Society,1998:597-603. |
| [5] | PAWLEK R P.Inert anodes for the primary aluminium industry:an update[A].Anaheim:Minerals,Metals and Materials Society,1996:243-248. |
| [6] | BECK T R.Non-consumable metal anode for production of aluminum with low-temperature fluoride melts[A].Las Vegas:Minerals,Metals and Materials Society,1995:355-360. |
| [7] | 于亚鑫;杨宝刚;于先进 等.锌铁和镍铁尖晶石材料的高温导电性[J].中国有色金属学报,1998,8(09):336-337. |
| [8] | OLSEN E;THONSTAD J .Nickel ferrite as inert anodes in aluminum electrolysis:Part Ⅰ material fabrication and preliminary testing[J].Journal of Applied Electrochemistry,1999,29(03):293-299. |
| [9] | PAWLEK R P .Inert anodes:Research,development and potential[J].Light Metals Age,2002,60(1-2):50-55. |
| [10] | OLSEN E;THONSTAD J.Behavior of Nickel ferrite cermets materials ns inert anodes[A].Anaheim:Minerals,Metals and materials Society,1996:249-257. |
| [11] | 席锦会,刘宜汉,姚广春,张剑红.尖晶石基惰性阳极坯料的粒度组成[J].材料与冶金学报,2003(02):108-112. |
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