Nanocrystalline high-entropy alloy (CoCrFeNiAl 0.3 ) thin-film coating by magnetron sputtering

Journal Article · Fri Sep 01 04:00:00 EDT 2017 · Thin Solid Films

DOI:https://doi.org/10.1016/j.tsf.2017.08.006· OSTI ID:1375345

Liao, Weibing; Lan, Si; Gao, Libo; Zhang, Hongti; Xu, Shang; Song, Jian; Wang, Xunli; Lu, Yang

High-entropy CoCrFeNiAl0.3 alloy thin films were prepared by magnetron sputtering technique. The thin film surface was very smooth and homogeneous. The synchrotron X-ray experiment confirmed that (111) type of texture existed in the thin film, and the structure was face-centered cubic nanocrystals with a minor content of ordered NiAl-type body-centered cubic structures. Interestingly, the elastic modulus of the thin film was nearly the same to the bulk single-crystal counterpart, however, the nanohardness is about four times of the bulk single-crystal counterpart. It was found that the high hardness was due to the formation of nanocrystal structure inside the thin films and the preferred growth orientation, which could be promising for applications in micro fabrication and advanced coating technologies.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
• Sponsoring Organization: FOREIGN
• OSTI ID: 1375345
• Journal Information: Thin Solid Films, Journal Name: Thin Solid Films Journal Issue: C Vol. 638; ISSN 0040-6090
• Publisher: Elsevier
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

36 MATERIALS SCIENCE
High-entropy alloy
Mechanical properties
NanocrystallineThin film coating
Synchrotron X-ray scattering