Sputtering Power Effects on Growth and Mechanical Properties of Cr2AlC MAX Phase Coatings

被引：32

作者：

Naveed, Muhammad ^{[1
]}

Obrosov, Aleksei ^{[1
]}

Zak, Andrzej ^{[2
]}

Dudzinski, Wlodzimierz ^{[2
]}

Volinsky, Alex A. ^{[3
]}

Weiss, Sabine ^{[1
]}

机构：

[1] Brandenburg Tech Univ Cottbus, Chair Phys Met & Mat Technol, D-03046 Cottbus, Germany

[2] Wroclaw Univ Sci & Technol, Dept Mat Sci Welding & Strength Mat, PL-50370 Wroclaw, Poland

[3] Univ S Florida, Tampa, FL 33620 USA

来源：

METALS | 2016年 / 6卷 / 11期

关键词：

Cr2AlC coatings; MAX phase; sputtering; XRD; TEM; Mechanical properties; Ni-based superalloy; sputtering power; AB-INITIO CALCULATIONS; CR-AL-C; THIN-FILMS; OXIDATION BEHAVIOR; TRIBOLOGICAL BEHAVIOR; TEMPERATURE OXIDATION; ELECTRICAL-PROPERTIES; M(N+1)AX(N) PHASES; TITANIUM-ALLOY; DEPOSITION;

D O I：

10.3390/met6110265

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Coating growth and mechanical properties of nanolamellar Cr2AlC coatings at various sputtering power were investigated in the present study. Cr2AlC coating was deposited on the IN 718 superalloy and (100) Si wafers by DC magnetron sputtering at different sputtering powers. The structure and properties were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and nanoindentation. It was found that coatings had columnar structure with nanocrystalline substructure. Deposition rate increased with the sputtering power. XRD results showed the presence of the Cr2AlC MAX phase, intermetallic AlCr2 and Cr7C3 carbide phases, along with the change in preferential coating growth orientation. TEM observations confirmed the occurrence of these phases, and the SAED patterns demonstrated significant texture of the coatings. Hardness values were measured in the range between 11-14 GPa, showing a slight increase with the sputtering power.

引用

页数：11

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