期刊文献+

A facile method for fabrication of nano-structured Ni-Al_2O_3 graded coatings: Structural characterization 被引量:1

纳米结构Ni-Al_2O_3梯度涂层的制备及结构表征(英文)
下载PDF
导出
摘要 Powder charges of micron-size Ni and Al2O3were utilized to deposit nano-structured Ni-Al2O3composite coatings on analuminum plate fixed at the top end of a milling vial using a planetary ball mill.Composite coatings were fabricated using powdermixtures with a wide range of Ni/Al2O3mass ratio varying from1:1to plain Ni.XRD,SEM and TEM techniques were employed tostudy the structural characteristics of the coatings.It was found that the composition of the starting mixture strongly affects the Al2O3content and the microstructure of the final coating.Mixtures containing higher contents of Al2O3yield higher volume fractions of theAl2O3particles in the coating.Though Ni-Al2O3composite coatings with about50%of Al2O3particles were successfully deposited,well-compacted and free of cracks and/or voids coatings included less than20%(volume fraction)of Al2O3particles which weredeposited from powder mixtures with Ni/Al2O3mass ratios of4:1or higher.Moreover,mechanical and metallurgical bondings arethe main mechanisms of the adhesion of the coating to the Al substrate.Finally,functionally graded composite coatings withnoticeable compaction and integrity were produced by deposition of two separate layers under identical coating conditions. 将微米级的Ni和Al_2O_3粉末通过行星式球磨机沉积在固定于球磨罐内顶端的铝板上,制备纳米结构的Ni-Al_2O_3复合涂层。共采用五组不同Ni与Al_2O_3质量比(1:1~16:1)的混合粉末,并制备一组纯Ni涂层。用XRD、SEM和TEM技术对涂层的相组成和微观结构进行表征。结果表明,初始混合粉末的成分对涂层中Al_2O_3颗粒的含量和微观结构有很大影响。Al_2O_3含量高的初始混合粉沉积的涂层中,Al_2O_3颗粒所占体积分数大。虽然通过本研究的方法可沉积出含有50%Al_2O_3颗粒的Ni-Al_2O_3复合涂层,但其性能差,制备出的致密度高、无裂纹和/或孔洞的涂层中Al_2O_3颗粒的含量小于20%,且需用Ni和Al_2O_3质量比≥4:1的初始混合粉制备。研究还发现,机械和冶金结合是涂层和铝基体结合的主要机理。通过在同一制备条件下沉积两种独立的涂料层可以成功制备出具有较好的致密度和完整性的功能梯度复合涂层。
出处 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2018年第1期77-87,共11页 中国有色金属学报(英文版)
关键词 metal matrix composite Ni-Al2O3 graded coating structural characterization 金属基复合物 Ni-Al2O3梯度涂层 结构表征
  • 相关文献

参考文献1

二级参考文献31

  • 1Y.S. Chang, J.Y. Lee, Mater. Chem. Phys. 20 (1988) 309-321.
  • 2R.J. Chater, I. Corni, A.R. Boceaccini, M.E Ryan, Surf. Interface Anal. 43 (2011) 492-494.
  • 3S.H. Kim, Mater. Lett. 61 (2007) 3589-3592.
  • 4W. Sade, R.T. Proenc, T.D. Moura, J. Branco, ISRN Mater. Sci. 2011 (2011) 6. http://dx.doi.org/10.5402/2011/693046.
  • 5Article ID 693046. L. Benea, P.L. Bonora, A. Borello, S. Martelli, F. Wenger, P. Ponthiaux, J. Galland, Solid State Ion. 151 (2002) 89-95.
  • 6T. Borkar, S.P. Harimkar, Surf. Coat. Technol. 205 (2011) 4124-4134.
  • 7B.S.B. Reddy, K. Das, A.K. Datta, S. Das, Nanoteclmology 19 (2008) 115603.
  • 8J. Li, J. Jiang, H. He, Y. Sun, J. Mater. Sci. Lett. 21 (2002) 939-941.
  • 9A.A. Aal, M. Bahgat, M. Radwan, Surf. Coat. Teehnol. 201 (2006) 2910-2918.
  • 10K.H. Hou, Y.C. Chen, Appl. Surf. Sci. 257 (2011) 6340-6346.

同被引文献4

引证文献1

二级引证文献2

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部