Document Type

Journal Article

Faculty

Faculty of Computing, Health and Science

School

School of Engineering (SOE)

RAS ID

12301

Comments

This article was originally published as: Ahmed, M. S., Munroe, P., Jiang, Z., Zhao, X. , Rickard, W., Zhou, Z., Li, L., & Xie, Z. (2011). Corrosion behaviour of nanocomposite TiSiN coatings on steel substrates. Corrosion Science, 53(11), 3678-3687. Original article available here

Abstract

Nanocomposite TiSiN coatings were deposited on tool steels. Detailed mechanisms that govern the corrosion of these coated steels were revealed, following immersion tests in a 70% nitric acid solution. Pitting originated preferentially from coating defect sites and expanded with increasing immersion time. Both Young’s modulus and hardness measured by nanoindentation decreased as the corrosion damage intensified. A thin oxide layer formed from the thermal annealing of the as-deposited samples at 900 °C was found to be effective against corrosive attack. In addition, compressive residual stress was noted to suppress the propagation of corrosion-induced cracks. The role of residual stress in controlling the corrosion resistance of these ceramic-coated steels is clarified by finite element analysis

Included in

Engineering Commons

 
COinS
 

Link to publisher version (DOI)

10.1016/j.corsci.2011.07.011