Mechanical Properties and Oxidation Resistance of CrN Coatings Deposited by Closed Field Unbalanced Magnetron Sputter Ion Plating

CrN coatings were prepared by Closed Filed Unbalanced Magnetron Sputter Ion Plating (CFUMSIP). The microstructure and morphologies of CrN coatings before and after oxidation were analyzed by XRD and SEM. At the same time, the mechanical properties and oxidation resistance of CrN coating were also studied. The results indicate that the phase in the dense CrN coatings with a hardness of 1979 HV and a adhension of 54 N was the coexistence of Cr, Cr2N and CrN. Besides, The CrN coatings showed good high-temperature oxidation resistance at 700°C while the coating failed at 800°C.

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Impact of CrAlN Coatings on Oxidation Behavior of K38G Alloy at 800 and 900°C

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.591.168 ◽

2013 ◽

Vol 591 ◽

pp. 168-171 ◽

Cited By ~ 2

Author(s):

Hao Zhang ◽

Shu Wang Duo ◽

Xiang Min Xu ◽

Fei Fei Luo ◽

Huan Ke ◽

...

Keyword(s):

Oxidation Resistance ◽

High Temperature Oxidation ◽

Oxidation Behavior ◽

Temperature Oxidation ◽

Ion Plating ◽

Unbalanced Magnetron ◽

Before And After ◽

Two Temperatures ◽

Magnetron Sputter ◽

K38g Alloy

CrAlN coatings have been deposited on K38G alloy by Closed Filed Unbalanced Magnetron Sputter Ion Plating (CFUMSIP). The microstructure, surface and section morphology of CrAlN coatings before and after oxidation were analyzed by XRD and SEM. At the same time, the mechanical properties and oxidation resistance of CrAlN coating were also studied. The results indicate that the phases in the isometric crystal CrAlN coatings with a hardness of 3500 HV and a adhension of 20 N was the coexistence of CrN and AlN. Each element of CrAlN coatings still existed at 800 and 900°C, but it demonstrated better high-temperature oxidation resistance because of denser oxide scale at 800°C. Besides, internal oxidation occurred under the two temperatures.

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Synthesis and Characterization of CrXN Nano-Multilayer Coatings

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.373-374.126 ◽

2008 ◽

Vol 373-374 ◽

pp. 126-129

Author(s):

H.Q. Li ◽

X.Y. Li ◽

Hai Lin Sun ◽

Dennis Teer ◽

Han Shan Dong

Keyword(s):

Synthesis And Characterization ◽

Multilayer Coatings ◽

Closed Field ◽

Wear Properties ◽

Ion Plating ◽

Unbalanced Magnetron ◽

Magnetron Sputter ◽

Crn Coatings ◽

Wear Tests

Three types of nano-multilayer coatings, CrSiN, CrAlN and CrMoN, with different Si, Al and Mo contents were deposited on M42 substrates using a closed field unbalanced magnetron sputter ion plating (CFUMSIP) technique. Systematic characterization on the chemical composition, microstructure, hardness and wear properties of these multilayer coatings has been investigated using GDOES, low angle XRD, SEM, TEM, nanoindentation and wear tests. Experimental results revealed that all these three types of Cr, XN ternary coatings (X=Al, Si and Mo) are nano-multilayer structured. The CrAlN multilayer coatings showed the highest hardness and oxidation resistance among these three multilayer coatings. The CrMoN multilayer coatings exhibited the lowest friction coefficient although no appreciable improvements in wear resistance were observed as compared with the optimized CrN coatings.

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