中国物理B ›› 2018, Vol. 27 ›› Issue (2): 28104-028104.doi: 10.1088/1674-1056/27/2/028104

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Influences of substrate temperature on microstructure and corrosion behavior of APS Ni50Ti25Al25 inter-metallic coating

Sh Khandanjou, M Ghoranneviss, Sh Saviz, M Reza Afshar   

  1. 1. Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran, Iran;
    2. Department of Materials Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
  • 收稿日期:2017-06-25 修回日期:2017-10-23 出版日期:2018-02-05 发布日期:2018-02-05
  • 通讯作者: Sh Saviz E-mail:azarabadegan@gmail.com

Influences of substrate temperature on microstructure and corrosion behavior of APS Ni50Ti25Al25 inter-metallic coating

Sh Khandanjou1, M Ghoranneviss1, Sh Saviz1, M Reza Afshar2   

  1. 1. Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran, Iran;
    2. Department of Materials Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
  • Received:2017-06-25 Revised:2017-10-23 Online:2018-02-05 Published:2018-02-05
  • Contact: Sh Saviz E-mail:azarabadegan@gmail.com
  • About author:81.15.-z; 68.55.-a; 81.70.Bt; 81.65.-b

摘要: In the present investigation, Ni50Ti25Al25 (at.%) mechanically alloyed powder is deposited on carbon steel substrate. Before the coating process, the substrate is heated to temperature ranging from room temperature to 400℃. The microstructure, porosity, microhardness, adhesion strength, and corrosion behavior of the coating are investigated at different substrate temperatures. Results show that coating porosity is lower on high temperature surface. Microhardness and adhesion strength of the deposition layer on the substrate without preheating have lower values than with preheating. The polarization test result shows that corrosion performance of the coating is dependent on micro cracks and porosities and the increasing of substrate temperature can improve the quality of coating and corrosion performance.

关键词: Ni50Ti25Al25 coating, air plasma spray, planetary ball milling, inter-metallic compounds, corrosion resistance

Abstract: In the present investigation, Ni50Ti25Al25 (at.%) mechanically alloyed powder is deposited on carbon steel substrate. Before the coating process, the substrate is heated to temperature ranging from room temperature to 400℃. The microstructure, porosity, microhardness, adhesion strength, and corrosion behavior of the coating are investigated at different substrate temperatures. Results show that coating porosity is lower on high temperature surface. Microhardness and adhesion strength of the deposition layer on the substrate without preheating have lower values than with preheating. The polarization test result shows that corrosion performance of the coating is dependent on micro cracks and porosities and the increasing of substrate temperature can improve the quality of coating and corrosion performance.

Key words: Ni50Ti25Al25 coating, air plasma spray, planetary ball milling, inter-metallic compounds, corrosion resistance

中图分类号:  (Methods of deposition of films and coatings; film growth and epitaxy)

  • 81.15.-z
68.55.-a (Thin film structure and morphology) 81.70.Bt (Mechanical testing, impact tests, static and dynamic loads) 81.65.-b (Surface treatments)