Structure, mechanical and tribological properties of diamond-like carbon films on aluminum alloy by arc ion plating

Zou, Yousheng; Zhou, Ke; Wu, Yongjun; Yang, Hongcheng; Cang, K.; Song, Gongsheng

doi:10.1016/j.vacuum.2011.10.019

Cited by 27 publications

(13 citation statements)

References 34 publications

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“…However, the disadvantages of low hardness and the poor wear resistance performance of Al alloys often limit their direct usage in many areas of engineering. The surface properties of Al alloys can be improved by depositing diamond-like carbon (DLC) coatings with high hardness, low friction and excellent wear resistance [ 4 , 5 , 6 , 7 , 8 , 9 ]. However, when DLC coatings are deposited on Al alloys, DLC coatings have poor adhesion as a result of a serious mismatch between the thermal expansion coefficient and the mechanical properties between the DLC coatings and the Al alloys.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ti Transition Layer Thickness on the Structure, Mechanical and Adhesion Properties of Ti-DLC Coatings on Aluminum Alloys

Cao

Ouyang

et al. 2018

Materials

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Multilayers of Ti doped diamond-like carbon (Ti-DLC) coatings were deposited on aluminum alloys by filtered cathodic vacuum arc (FCVA) technology using C2H2 as a reactive gas. The effect of different Ti transition layer thicknesses on the structure, mechanical and adhesion properties of the coatings, was investigated by scanning electron microscopy (SEM), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), nanoindentation and a scratch tester. The results showed that the Ti transition layer could improve interfacial transition between the coating and the substrate, which was beneficial in obtaining excellent adhesion of the coatings. The Ti transition layer thickness had no significant influence on the composition and structure of the coatings, whereas it affected the distortion of the sp2-C bond angle and length. Nanoindentation and scratch test results indicated that the mechanical and adhesion properties of the Ti-DLC coatings depended on the Ti transition layer thickness. The Ti transition layer proved favorable in decreasing the residual compressive stress of the coating. As the Ti transition layer thickness increased, the hardness value of the coating gradually decreased. However, its elastic modulus and adhesion exhibited an initial decrease followed by an increasing fluctuation. Among them, the Ti-DLC coating with a Ti transition layer thickness of 1.1 μm exhibited superior mechanical properties.

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Section: Introductionmentioning

confidence: 99%

Effect of Ti Transition Layer Thickness on the Structure, Mechanical and Adhesion Properties of Ti-DLC Coatings on Aluminum Alloys

Cao

Ouyang

et al. 2018

Materials

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“…The results are in well comparison to other studies and are better in comparison with the results in Refs. . Niakan et al reported comparable COF 0.06 and 0.12 at the bias −800 and −600 V, respectively.…”

Section: Resultsmentioning

confidence: 81%

“…Amorphous carbon (a‐C) films, one type of diamond‐like carbon (DLC) coatings are excellent candidates for covering of standard Al alloys (2024, 6061, and 7075) due to their high hardness, excellent wear resistance, low coefficient of friction, and chemical inertness. Covering the surface of Al alloys by a‐C thin films may lead to an extension of lifetime and improvement of wear and corrosion resistance . The mechanical properties of a‐C are directly affected by the sp 3 /sp 2 ratio and film composition .…”

Section: Introductionmentioning

confidence: 99%

“…Several authors investigated mechanical and tribological properties of carbon based coatings deposited also using different precursors under a constant substrate bias , mostly on steel , glass , silicon , Ti and aluminum alloys substrates, while improving the adhesion by ion implantation , and interlayers . Zou et al evaluated properties of diamond like carbon films deposited on aluminum alloys by arc ion plating with the −100 V bias. Sasaki et al studied a 1 μm thick DLC film deposited onto Al alloys by diode rf bias sputtering without an interlayer, the bias was −800 V. Nie et al examined a DLC coating deposited on Al alloys by plasma immersion ion implantation technique with Al 2 O 3 interlayers.…”

Section: Introductionmentioning

confidence: 99%

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A study of structural and wear properties of PACVD deposited a‐C:H thin films for application as protective layers on Al alloys

Kottfer

Marton

Ferdinandy

et al. 2015

Physica Status Solidi (a)

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Due to the high strength-to-weight ratio, aluminum alloys are commonly used materials in aircraft and automotive industries. However, the low hardness and wear resistance and high friction coefficient limit their applications. In this study, we deposited a-C:H thin films on 7075 Al alloy substrates without an interlayer by direct current PACVD method. Negative substrate bias was varied to improve the surface mechanical properties. We obtained smooth, homogenous, and well adhered up to 28 mm thick a-C:H layers on the Al alloy substrates. The structural and mechanical properties were analyzed using Raman spectroscopy, SEM, nanoindentation and Pin-on-disc test. Raman spectroscopy showed a higher content of trans(CH) x within the films deposited with low bias and increased sp 2 bonding for higher bias depositions. Adhesion test has shown the adhesion grade HF1 to HF4. Coefficient of friction was measured in the range 0.05-0.15 and wear rates of a-C:H covered samples were significantly reduced in comparison to uncovered substrates. The obtained results show a promising potential of the a-C:H as wear resistant coatings for the 7075 Al alloy.

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“…Among a variety of substrate materials, diamond has attracted growing interest owing to its excellent heat conductor and chemical stability [6,7]. CNTs have been grown on diamond for cold cathode application.…”

Section: Introductionmentioning

confidence: 99%

Growth of carbon nanotubes decorated with Fe nanoparticles encapsulated by graphitic layers on diamond film on cemented carbide substrate

Yang

Zeng

et al. 2015

Journal of Alloys and Compounds

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Structure, mechanical and tribological properties of diamond-like carbon films on aluminum alloy by arc ion plating

Cited by 27 publications

References 34 publications

Effect of Ti Transition Layer Thickness on the Structure, Mechanical and Adhesion Properties of Ti-DLC Coatings on Aluminum Alloys

Effect of Ti Transition Layer Thickness on the Structure, Mechanical and Adhesion Properties of Ti-DLC Coatings on Aluminum Alloys

A study of structural and wear properties of PACVD deposited a‐C:H thin films for application as protective layers on Al alloys

Growth of carbon nanotubes decorated with Fe nanoparticles encapsulated by graphitic layers on diamond film on cemented carbide substrate

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