DOI number:10.1016/j.corsci.2020.108490

Journal:Corrosion Science

Key Words:Ceramic; XRD; TEM; Hardening; Oxidation

Abstract:Cr and Ta co-alloyed Ti−Al−N coatings were synthesised by cathodic arc deposition. The high-temperature stability and oxidation behaviour of the coatings were investigated by annealing in an inert atmosphere and oxidation environment, respectively. The results indicated that FCC-structured (Ti, Al, Cr, Ta)N coatings exhibit spinodal decomposition and age-hardening upon annealing. Ta retarded the formation of wurtzite AlN and helped to maintain high coating hardness at 900–1000 °C. Cr promoted the formation of protective (Al, Cr)2O3 scale and (Ti, Ta)O2 rutile oxide was found beneath, which reduced mass transport of oxygen during oxidation. Co-alloying with Cr and Ta leads to optimal oxidation resistance of (Ti, Al, Cr, Ta)N coatings.

Co-author:Haiqing Li,Quan Zhang,Tiefeng Wei,Fengge Zhang,Kwang Ho Kim

First Author:Bin Peng

Indexed by:Journal paper

Correspondence Author:Yu X. Xu,Qimin Wang

Discipline:Engineering

First-Level Discipline:材料科学与工程

Document Type:J

Volume:167

Page Number:108490

ISSN No.:0010-938X

Translation or Not:no

Date of Publication:2020-05-01

Included Journals:SCI

Links to published journals:http://www.sciencedirect.com/science/article/pii/S0010938X1932061X

Attachments:

2020-Bin-Peng-et-al-Corros-Sci-vol-167-pp-108490(20200501).pdf