DOI number:10.1016/j.ceramint.2018.11.039

Journal:Ceramics International

Key Words:Film; AlCrSiN; Mechanical properties; Tribological properties; Oxidation resistance

Abstract:AlCrSiN coatings with splendid mechanical and thermal properties have attracted wide attention as excellent alternatives for advanced machining applications. Here, Ni-alloyed AlCrSiN coatings were deposited by cathodic arc evaporation and elaborated with respect to mechanical, tribological and anti-oxidation properties. With the increase of Ni content, multiphase composite structured AlCrSiN-Ni coatings show a sustained decline in hardness, elastic modulus and the ratio of hardness to modulus, which causes the decrease of wear resistance at room temperature and 600 °C. Nevertheless, the addition of Ni effectively enhances the toughness and reduces the friction, especially, at 600 °C, where AlCrSiN, AlCrSiN_Ni5, and AlCrSiN_Ni20 obtained a average friction coefficient of ~0.93, 0.86 and 0.66, respectively. Oxidation kinetics studies at 800 – 1000 °C indicate that Ni-containing coatings have relatively lower activation energies, 173.8 kJ/mol of AlCrSiN_Ni5 and 156.6 kJ/mol of AlCrSiN_Ni20, than 176.5 kJ/mol of AlCrSiN. The faster outward diffusion of Cr in Ni-containing coatings forms a Cr2O3/NiAl2O4 two-layer oxide scale with less protection effect and poor adhesion, leading to inferior oxidation resistance.

Co-author:Bin Peng,Quan Zhang,Qimin Wang,Li Chen

First Author:Zhe R. Liu

Indexed by:Journal paper

Correspondence Author:Yu X. Xu

Discipline:Engineering

First-Level Discipline:材料科学与工程

Document Type:J

Volume:45

Page Number:3735-3742

ISSN No.:0272-8842

Translation or Not:no

Date of Publication:2019-02-15

Included Journals:SCI

Links to published journals:https://www.sciencedirect.com/science/article/pii/S0272884218331420

Attachments:

2019-Zhe-R-Liu-et-al-Ceram-Int-vol-45-pp-3735-3742(20190215).pdf