Hardness and modulus of elasticity of brush plated nickel coating by nanoindentation testing

Research output: Contribution to journalArticle

Authors

Colleges, School and Institutes

External organisations

  • Academy of Armored Forces Engineering
  • School of Metallurgy and Materials

Abstract

A new type nano test system is introduced, the test principle and the indentation data analysis method are described. It is used to test the micro mechanical properties of brush plated Ni coating on steel, such as hardness, modulus of elasticity and anti-indentation creep property, and the regularities of mechanical properties distribution with coating thickness are researched. The results show that the coating exhibits uniform mechanical properties throughout its thickness, with the exception of a few regions with low hardness and modulus due to some flaws and a few regions with high hardness and modulus on the surface and subsurface. The average hardness and modulus of elasticity of Ni coating are 7.02 GPa and 183 GPa respectively, thereinto the hardness is 2.9 times of steel. The Ni coating has greater resistance to indentation creep than steel under the test condition. These results supply useful data for process improvement, new type material development and application expansion.

Details

Original languageEnglish
Pages (from-to)128-131
Number of pages4
JournalJixie Gongcheng Xuebao/Chinese Journal of Mechanical Engineering
Volume41
Issue number4
Publication statusPublished - 1 Apr 2005

Keywords

  • Brush plated coating, Hardness, Modulus of elasticity, Nanoindentation