Periodic nano-ripples structures fabricated on WC/Co based TiAlN coatings by femtosecond pulsed laser

Zhang, K.; Deng, Jianxin; Xing, Youqiang; Lian, Yunsong; Zhang, G.

doi:10.1179/1743294414y.0000000448

Cited by 8 publications

(2 citation statements)

References 28 publications

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“…1-8 AlN films are also used as protective coatings, especially with Ti incorporation into the structure. 11-15 AlN has good piezoelectric properties and has been used in surface acoustic wave (SAW) devices. 6,9,10 In addition, AlN has a large optical band gap of about 5.9–6.02 eV and high transparency properties in UV and visible light range which makes it a good candidate for transparent electronics and optoelectronics.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of c-axis oriented AlN thin films at room temperature

Tavşanoğlu

2017

Surface Engineering

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In this study, aluminium nitride (AlN) thin films were synthesised by plasma-enhanced reactive DC magnetron sputtering on glass and Si (100) substrates and the effect of bias voltages on the structural, optical and morphological properties of the coatings has been studied. According to the grazing angle XRD studies, AlN in hexagonal (wurtzite) structure has been obtained for all the coatings. ( 002) plane c-axis oriented films have been achieved at 150 and 175 V bias voltages. AFM analyses demonstrated that with the increase in the bias voltages, a transformation from coarse to fine granular morphology has been occurred and smoother surfaces with a decrease in the surface roughness from 3.40 nm to about 1.90 nm were obtained. The results also demonstrated that the high transmittance values of AlN films were not affected by the change in the bias voltages and about 80% of transmittance obtained for all AlN films deposited in this study.

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Section: Introductionmentioning

confidence: 99%

Synthesis of c-axis oriented AlN thin films at room temperature

Tavşanoğlu

2017

Surface Engineering

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“…There are many kinds of composite coatings developed so far, such as Co–WC composite coating for high hardness [2], Ni–SiC composite coating for high wear resistance [3], Ni–Al 2 O 3 composite coating for corrosion resistance [4], Au–graphite composite coating for good electrical contact function [5], as well as the composite coating of inorganic fullerene nanometre material for self-lubricating property [6]. For wear resistance application, the cobalt-based composite coatings have attracted much attention as this coating could form a layer of oxide glazing film at temperature above 300°C.…”

Section: Introductionmentioning

confidence: 99%

High performance Co–Cr₃C₂ composite coating by jet electrodeposition

Tan¹,

Song²,

Zheng³

et al. 2017

Surface Engineering

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This paper studied the Co-Cr 3 C 2 composite coatings on the nickel-based super alloy GH4169 deposited by pulse reverse jet electrodeposition in conjunction with ultrasonic vibration. The GH4169 substrates were first annealed at 500°C for 20 min to eliminate the internal stress, and then the surface was activated chemically. The surface activation procedure and ultrasonic pulse interval time in the jet electrodeposition were investigated. The results showed that the Cr 3 C 2 particle contents, microhardness, wear resistance of the coatings were significantly improved, while the surface roughness and the coefficient of friction were reduced, when the ultrasonic vibration is applied in the jet electrodeposition of the Co-Cr 3 C 2 composite coatings. It is found that the intermittent ultrasonic vibration at 8 s interval time has the greatest effect on the coatings. The Cr 3 C 2 particle content at this condition is at its maximum of 23.85%, with evenly particle distribution and good adhesion with the cobalt matrix. The hardness of the composite coating is 652 HV(0.5), and frictional coefficient is 0.15. It has also high thermal stability, and the microhardness can hold up to 800°C without degradation, showing a great potential for high-temperature applications.

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