Oxidation and Corrosion Behavior of Nanolaminated MAX-Phase Ti2AlC Film Synthesized by High-Power Impulse Magnetron Sputtering and Annealing

Jianjian Fu,Teng Fei Zhang,Qixun Xia,Taeg-Woo Lee,Zhixin Wan,Sung-Hwan Lim,Kwang Ho Kim

doi:10.1155/2015/213128

Jianjian Fu, Teng Fei Zhang + Show 5 more

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https://doi.org/10.1155/2015/213128

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Abstract

Nanolaminated MAX-phase Ti2AlC thin films were synthesized by high-power impulse magnetron sputtering (HiPIMS) from a MAX-phase Ti2AlC target. The amorphous matrix Ti-Al-C films were deposited at room temperature, while the MAX-phase Ti2AlC films were obtained through annealing process of the as-deposited amorphous matrix films. The microstructure, oxidation resistance, and corrosion behavior of these two films were comparatively investigated. The results indicated that the MAX-phase Ti2AlC films had superior antioxidation and anticorrosion properties than the amorphous matrix Ti-Al-C films, which is attributed to the rapid formation of dense Al2O3layer on the top of MAX-phase Ti2AlC films because of the rapid diffusion of Al atoms in the typical nanolaminated structure of MAX phase.

Highlights

Mn+1AXn phases (MAX phases), one kind of nanolaminated carbides or nitrides (M: early transition metal, A: an element of group IIIA or IVA, and X: C and/or N) [1,2,3,4], have gained significant attention on the theoretical and experimental studies since they were discovered in 1960s [5, 6]
In other MAX phases, for example, the Ga-containing MAX phase, the influence of the vapor pressure effected the amounts of the Ga atoms [36]
The “A” content was temperature dependent and the evaporation of the “A” element became the dominant factors to influence the compositions of the film

Summary

Introduction

Mn+1AXn phases (MAX phases), one kind of nanolaminated carbides or nitrides (M: early transition metal, A: an element of group IIIA or IVA, and X: C and/or N) [1,2,3,4], have gained significant attention on the theoretical and experimental studies since they were discovered in 1960s [5, 6] They possess excellent and combined properties of metals and ceramics, including readily machinability, good thermal and electrical conductivity, high strength and elastic modulus, good oxidation, and corrosion resistance [7, 8]. The combined properties suggest the potential applications in elevated-temperature structural devices

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