Premium
Corrosion‐ and Damage‐Resistant Nitride Coatings for Steel
Author(s) -
Ahmed Mohammad Shoeb,
Munroe Paul,
Jiang ZhongTao,
Zhao Xiaoli,
Wajrak Magdalena,
Guo Hua,
Rickard William,
Xie Zonghan
Publication year - 2012
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2012.05328.x
Subject(s) - corrosion , materials science , nanoindentation , coating , metallurgy , microstructure , ceramic , nitride , composite material , layer (electronics)
Ceramic coatings of distinct microstructures, namely TiSiN and CrN , were deposited on tool steels. The corrosion resistance of the coated steels was measured. Following nanoindentation, immersion tests were conducted in 70% HNO 3 solution for 96 h. Deformed CrN , where deformation occurred through shear sliding of columnar grains, was insensitive to corrosion attack. In contrast, open cracks formed in the indented TiSiN coating, serving as pathway for reactive agents to penetrate through the coatings. Finite element analysis was applied to evaluate the damage tolerance of the coatings and its impact on the corrosion resistance of the coated steels.