Chemical Composition Analysis of TiAlBN Nanocomposite Coating Deposited via RF Magnetron Sputtering

Rosli, Zulkifli Mohd; Mahamud, Zainab; Kwan, Wai Loon; Juoi, Jariah Mohamad; Lau, Kok-Tee

doi:10.4028/www.scientific.net/kem.594-595.551

Cited by 4 publications

(3 citation statements)

References 14 publications

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“…Recently, a nanocomposite TiAlBN coating was successfully deposited via r.f. magnetron sputtering technique on a steel substrate which consist of nc-(Ti,Al)N, a-BN and a-TiB 2 phases [10][11]. Nitride based hard coatings like TiN, (TiAl)N, BN and etc.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Performance of Nitrided Based Coating on AZ9I Mg Alloy in Hank’s Solution

Zulkifli

Zaimi

Juoi

et al. 2015

MSF

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The use of Magnesium alloys as bioresorsable metallic implant is interesting to study due to the properties of magnesium ions which can be found naturally in bone tissue as well as are essential to human metabolism. However, its fast degradation rate and excess of these ions in the body may cause undesirable health effects. Therefore, surface treatment such as coating can offer an alternative solution to slow down the fast degradation rate of magnesium alloy. Thus, in this study, attempt has been made to coat the AZ91 magnesium alloy substrate with TiN, AlN and TiAlBN coatings using single hot press target with r.f. magnetron sputtering technique. During deposition, target power, working pressure and bias voltage were optimized for each coating deposition. Coating microstructure and its crystal phases are analysed using SEM and glancing angle X-ray diffraction analysis (GAXRD). Corrosion properties were evaluated using potentiodynamic polarization using Hank’s Solution as a medium to simulate body fluid. Result showed that TiAlBN coating is acting most successfully as a protection layer by slowing down the penetration of corrosion towards AZ91 Mg alloy substrate. SEM micrographs show a minimum damage to the substrate’s surface seen after subjected to corrosion test. In conclusion, TiAlBN coating is able to protect AZ91 Mg alloy substrate surface from corrosion and able to slow down their degradation rate. The better performance of TiAlBN coating create interest to further works on exploring the potential of this hard coated on AZ91 Mg alloy for biomaterial application.

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Section: Introductionmentioning

confidence: 99%

Corrosion Performance of Nitrided Based Coating on AZ9I Mg Alloy in Hank’s Solution

Zulkifli

Zaimi

Juoi

et al. 2015

MSF

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“…This coating has been proven that it can be deposited with many physical vapor deposition (PVD) techniques, for example the electronbeam (EB) evaporation [1], and the direct current (DC) magnetron sputtering [4]. However, only few researchers used the radio frequency (RF) magnetron sputtering technique on the deposition of the n-TiAlBN coating [5][6][7]. In order to acquire desirable properties from the TiAlBN coating, the design of the coating's microstructure is of particularly important.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nitrogen-to-Total Gas Flow Ratio on the Nanocomposite TiAlBN Coating

Rosli

Kwan

Rashid

et al. 2015

AMM

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A nanocomposite TiAlBN (n-TiAlBN) coating has been successfully deposited via RF magnetron sputtering by varying the nitrogen-to-total gas flow ratio (RN) at a substrate temperature of 300 °C. The coating was deposited on AISI 316 substrates using a single Ti-Al-BN hot-pressed target. The crystal phases, grain size and chemical composition of the coatings were measured using the glancing angle X-ray diffraction analysis (GAXRD) and X-ray photoelectron spectroscopy (XPS). The grains size of the n-TiAlBN coating was found to be within the range of 3.5 to 5.7 nm calculated using Scherrer’s formula. The n-TiAlBN coating reached a nitride saturated state at a higher RN (e.g >15%) with the amount of boron concentration to be around 9 at. %. Further, reducing the RN (e.g. 5%) has increased the boron concentration to 16.17 at. %. This paper shows that by carefully control the nitrogen-to-total gas flow ratio (RN) in the n-TiAlBN coating, it indeed gives a significant effect on its crystallographic structure, grain size, and chemical compositions.

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“…One of the most simple but effective ways to prevent corrosion of magnesium is by coating the base materials [3]. Most recently, a nanocomposite TiAlBN coating (n-TiAlBN) has successfully being deposited on AISI 316 steel substrate from a single hot press compound target using magnetron sputtering technique producing coatings with a thickness of around 500 nm [4,5]. The coating comprise of (Ti,Al)N/a-BN/a-TiB 2 nanocomposite phases detected using GAXRD and XPS analysis with a grain size ranging from 3.5 -5.7 nm.…”

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confidence: 99%

Nanocomposite TiAlBN Coatings as a Corrosion Protection Layer for AZ91 Mg Alloy Substrate in NaCl

Zulkifli

Zaimi

Juoi

et al. 2015

MSF

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Magnesium alloys create increasing interest in structural application where weight reduction is vast concern. However, one of magnesium drawback in various applications is low corrosion resistance. In general, a hard coating can be applied on metal to combat such a problem. AlN and TiN coatings are most widely utilized in manufacturing area i.e for structural application due to its high hardness, high chemical stability, and excellent adhesion to substrates. Most recent, TiAlBN coating catch many attentions due to its superior properties than other most studied hard coating. The incorporation of aluminium in the cubic face centered TiN structure on Ti sites leads to deformation and strengthening of the crystal structure of the coating together. Moreover, incorporation of BN in this coating should improve and enhanced the corrosion resistance of Mg alloy. Therefore, in this study, TiAlBN coating have been chosen to be deposited on Mg alloy using reactive magnetron sputtering together with AlN and TiN coatings for comparison study. During depositions, target power, working pressure and bias voltage are optimized for each coating. Analysis on the effect of AlN, TiN and TiAlBN coatings on Mg alloy substrate include thickness measurement and microstructure by scanning electron microscope (SEM). Coatings phase were analysed using glancing angle X-ray diffraction analysis (GAXRD) and corrosion properties were evaluated using potentiodynamic polarization in NaCl solution. TiAlBN shows better performance of corrosion protection with the least corrosion rate (penetration rate = 0.20 mm/yr; mass loss rate=0.97g/m2d) in sodium chloride (NaCl) solution although having the lowest coating thickness (412 nm).

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Chemical Composition Analysis of TiAlBN Nanocomposite Coating Deposited via RF Magnetron Sputtering

Cited by 4 publications

References 14 publications

Corrosion Performance of Nitrided Based Coating on AZ9I Mg Alloy in Hank’s Solution

Corrosion Performance of Nitrided Based Coating on AZ9I Mg Alloy in Hank’s Solution

Effect of Nitrogen-to-Total Gas Flow Ratio on the Nanocomposite TiAlBN Coating

Nanocomposite TiAlBN Coatings as a Corrosion Protection Layer for AZ91 Mg Alloy Substrate in NaCl

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