全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

CaO对17Ni/(10NiO-NiFe2O4)金属陶瓷的致密化及力学性能的影响

, PP. 110-115

Keywords: 10NiO-NiFe2O4,CaO掺杂,致密度,力学性能,铝电解

Full-Text   Cite this paper   Add to My Lib

Abstract:

采用冷压-烧结技术制备了CaO掺杂的17Ni/(10NiO-NiFe2O4)金属陶瓷惰性阳极。研究了CaO的添加量和烧结温度对17Ni/(10NiO-NiFe2O4)金属陶瓷的物相组成、致密度和力学性能的影响。结果表明,CaO含量在小于5.0wt%范围内,烧结样品由Ni、NiO和NiFe2O4组成。CaO掺杂对17Ni/(10NiO-NiFe2O4)金属陶瓷具有明显的助烧作用。当烧结温度为1250℃时,CaO掺杂量为1.0wt%的样品致密度达到最大值97.87%,继续增加CaO掺杂量将导致材料致密度的下降。当烧结温度从1250℃提高到1350℃时,当CaO掺杂量小于0.5wt%时,样品的致密度随烧结温度的提高而增加;当CaO掺杂量大于或等于0.5wt%时,样品的致密度随烧结温度的提高而降低。提高烧结温度和添加CaO均能促进陶瓷相晶粒长大。样品在1250℃烧结时,其抗弯强度在CaO掺杂量为1.0wt%时达到极大值为150.66MPa。

References

[1]  Gray P T. Corrosion and passivation of cermet inert anodes in cryolite-type electrolytes // Miller R E. Light Metals: TMS Annual Meeting, Melt Spinning, Strip Casting and Slab Casting. Warrendale, Pa: TMS, 1986: 309 -320.
[2]  刘业翔. 铝电解惰性阳极与可湿润性阴极的研究与开发进展 [J]. 轻金属, 2001(5): 26 -29. Liu Yexiang. Advance on the research and development of inert anode and wettable cathode in the aluminum electrolysis [J]. Light Metals, 2001(5): 26 -29.
[3]  Pawlek R P. Inert anodes: An update // Schneider W. Light Metals:TMS Annual Meeting, Melt Spinning, Strip Casting and Slab Casting. Warrendale, Pa: TMS, 2002: 449 -456.
[4]  Weyand J D, Deyoung D H, Ray S P, et al. Inert anodes for aluminum smelting, DOE/CS/40158-20 . Washington D C: Aluminum Company of America, 1986.
[5]  Lai Yanqing, Sun Xiaogang, Li Jie, et al. Densification of Ni-NiFe2O4 cermets for aluminum electrolysis [J]. Transactions of Nonferrous Metals Society of China, 2004, 15(3): 666 -670.
[6]  Ghosh A, Das S K, Biswas J R, et al. The effect of ZnO addition on the densification and properties of magnesium aluminum spinel [J]. Ceramics International, 2000, 26(6): 605 -608.
[7]  Ritwik Sarkar, Kumar Das Samir, Goutam Banerjee. Effect of addition of Cr2O3 on the properties of reaction sintered MgO-Al2O3 spinels [J]. Journal of the European Ceramic Society, 2002, 22(8): 1243 -1250.
[8]  席锦会, 刘宜汉, 姚广春. MnO2对镍铁尖晶石型惰性阳极材料性能的影响 [J]. 功能材料, 2005, 36(3): 374 -376. Xi Jinhui, Liu Yihan, Yao Guangchun. Effect of MnO2 on properties of inert anode of NiFe2O4 spinel [J]. Journal of Functional Materials, 2005, 36(3): 374 -376.
[9]  Wang Changfu, Li Guoxun, Qu Shuling, et al. Effect of adding Y2O3 in cermet electrodes on the electrical conductivities [J]. Rare Metals, 1992, 11(4): 255 -259.
[10]  赖延清, 张 刚, 刘业翔, 等. 金属含量对Cu-Ni-NiFe2O4金属陶瓷导电性能的影响 [J]. 中南大学学报: 自然科学版, 2004, 35(6): 880 -884. Lai Yanqing, Zhang Gang, Liu Yexiang, et al. Effect of adding Cu-Ni on mechanical capacity and electrical conductivity of NiFe2O4-based cermets [J]. Journal of Central South Uni versity of Technology: Natural Science, 2004, 35(6): 880 -884.
[11]  Coble R L. Sintering crystalline solids Ⅰ : Intermediate and final state diffusion models [J]. J Appl Phys, 1961, 32: 787 -792.
[12]  Coble R L. Sintering crystalline solid Ⅱ : Experimental test of diffusion models in powder compacts [J]. J Appl Phys, 1961, 32: 793 -799.
[13]  Li Jie, Zhang Gang, Lai Yanqing, et al. Effect of metallic content on mechanical property of Ni/(10NiO-NiFe2O4) cermets [J]. Journal of Central South University of Technology, 2006, 13(4): 347 -351.
[14]  施剑林. 固相烧结 Ⅱ : 粗化与致密化关系及物质传输途径 [J]. 硅酸盐学报, 1997, 25(6): 657. Shi Jianlin. Solid state sintering Ⅱ : Relation between coarsening and densification and mass transport path [J]. Journal of the Chinese Ceramic Society, 1997, 25(6): 657.
[15]  张清纯. 陶瓷材料的力学性能 [M]. 北京: 科学出版社, 1987: 29. Zhang Qingchun. Mechanical properties of ceramics [M]. Beijing: Science Press, 1987: 29.
[16]  徐 强, 张幸红, 韩杰才, 等. TiB2-Cu-Ni金属陶瓷的抗热震和抗烧蚀行为 [J]. 复合材料学报, 2003, 20(6): 31 -35. Xu Qiang, Zhang Xinghong, Han Jiecai, et al. Thermal shock resistance and ablation behaviour of titanium diboride copper-nickel cermet [J]. Acta Materiae Compositae Sinica, 2003, 20(6): 31 -35.
[17]  Schicker S, Erny T, Garcia D E, et al. Microstructure and mechanical properties of Al-assisted sintered Fe/Al2O3 cermets [J]. Journal of the European Ceramic Society, 1999, 19 (13/14): 2455 -2463.
[18]  丁格波夫J R. 金属陶瓷 [M]. 施 今, 译. 上海: 上海科学技术出版社, 1964: 65 -68. Tinklepaugh J R. Cermet [M]. Shi Jin, trans. Shanghai: Shanghai Science and Technology Press, 1964: 65 -68.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133