Characteristics of PVD-coatings on AZ31hp magnesium alloys

Hollstein, F.; Wiedemann, Renate; Scholz, J.

doi:10.1016/s0257-8972(02)00671-0

Cited by 143 publications

(47 citation statements)

References 12 publications

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“…The coating defects e.g., pores, pinholes, cracks, observed at the SEM images before corrosion tests lead the electrolyte to reach to the substrate and contribute to developing of the corrosion. [3,10,11] …”

Section: Corrosion Behaviour In 35%nacl Environmentmentioning

confidence: 99%

Investigation on Corrosion Behaviour of ZrN Thin Films in Industrial Environment

2018

Oct. 17-19, 2017 Dubai (UAE)

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Section: Corrosion Behaviour In 35%nacl Environmentmentioning

confidence: 99%

Investigation on Corrosion Behaviour of ZrN Thin Films in Industrial Environment

2018

Oct. 17-19, 2017 Dubai (UAE)

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“…As seen from Table 3, the CPE f is the minimum and Rct, R f values are the largest when the film annealed at 300 • C, which indicates that the film annealed at 300 • C has the best anti-corrosion performance. The improvement of corrosion resistance after annealing can be described as follows: before annealing, when TiCN films subjected to NaCl solution, chloride ions penetrate the film through some small defects and columnar crystal structure, the exposed area will experience anodic dissolution, the corrosive compounds are formed, which will usually extend laterally along the interface between the film and the substrate [1,20]. After annealing, the films become denser owing to the atoms rearrangement and the reduction of defects and interspaces.…”

Section: Morphology and Eds Analysismentioning

confidence: 99%

Microstructure, Residual Stress, Corrosion and Wear Resistance of Vacuum Annealed TiCN/TiN/Ti Films Deposited on AZ31

Rong

Sun

et al. 2016

Metals

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Abstract:Composite titanium carbonitride (TiCN) thin films deposited on AZ31 by DC/RF magnetron sputtering were vacuum annealed at different temperatures. Vacuum annealing yields the following on the structure and properties of the films: the grain grows and the roughness increases with an increase of annealing temperature, the structure changes from polycrystalline to single crystal, and the distribution of each element becomes more uniform. The residual stress effectively decreases compared to the as-deposited film, and their corrosion resistance is much improved owing to the change of structure and fusion of surface defects, whereas the wear-resistance is degraded due to the grain growth and the increase of surface roughness under a certain temperature.

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“…The scratch test was employed to measure the mechanical adhesion between the coating and its substrate [29]. The critical load and the thickness of the coatings were characterized by virtue of Rochwell scratch tester (Micro Materials Ltd, UK) at a loading rate of 20 mN/s and a scratch rate of 10 μm/s.…”

Section: Scratch Testsmentioning

confidence: 99%

“…To date, MS film has become the most important industrial applications, especially for the production of large area coating. A considerable coatings, containing: (i) metallic films such as Cr [24], Al [25] and Ti [13] as well as Ti/Al [26], (ii) Ncontaining non-metallic coating such as diamond-like carbon (DLC) [27], TiN [28], CrN [29], and (iii) hybrid coatings such as TiN/Ti [30][31], DLC/AlN/Al [32], Al 2 O 3 / Al and Al 2 O 3 /Ti [33], have been prepared on magnesium alloys by means of MS.…”

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confidence: 99%

Mechanical and corrosion properties of Al/Ti film on magnesium alloy AZ31B

Zeng

Jiang

et al. 2014

Front. Mater. Sci.

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Preparation of titanium film on magnesium substrate faces a challenge due to non-Fickian inter-diffusion between titanium and magnesium. Aluminum can build a bridge between titanium and magnesium. Al/Ti duplex coatings were deposited on magnesium alloy AZ31B using magnetron sputtering (MS). The low temperature diffusion bonding behavior of the Mg/Al/Ti coating was investigated through SEM and its affiliated EDS. The phase structure and critical load of the coatings were examined by means of XRD and scratch tests, respectively. The results demonstrated that the bonding strength was significantly improved after a post heat treatment (HT) at a temperature of 210°C. The diffusion mechanism of the interfaces of Mg/Al and Al/Ti in the coating was discussed based on the analysis of formation energy of vacancies and diffusion rates. The Al/Ti dual layer enhanced the corrosion resistance of the alloy. And the HT process further increased the corrosion resistance of the coated alloy. This result implies that a post HT at a lower temperature after MS is an effective approach to enhance the bonding strength and corrosion resistance of the Al/Ti film on Mg alloys.

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Characteristics of PVD-coatings on AZ31hp magnesium alloys

Cited by 143 publications

References 12 publications

Investigation on Corrosion Behaviour of ZrN Thin Films in Industrial Environment

Investigation on Corrosion Behaviour of ZrN Thin Films in Industrial Environment

Microstructure, Residual Stress, Corrosion and Wear Resistance of Vacuum Annealed TiCN/TiN/Ti Films Deposited on AZ31

Mechanical and corrosion properties of Al/Ti film on magnesium alloy AZ31B

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