Microstructure and properties of TiAlN/AlN multilayers with different modulation periods

Yan, Hongjuan; Tian, Qinye; De-wen, Gao; Yang, Funmei

doi:10.1016/j.surfcoat.2019.01.064

Cited by 19 publications

(9 citation statements)

References 22 publications

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“…The coating with a nitrogen flux rate of 60 sccm has the lowest COF of 0.433, thanks to the high hardness and toughness. The average friction coefficient is about 0.6~0.8 [ 45 , 49 , 50 ]; thus, the friction performance of the super-hard, yet tough, TiAlN coating in this work was significantly improved.…”

Section: Resultsmentioning

confidence: 99%

Tribological Behaviors of Super-Hard TiAlN Coatings Deposited by Filtered Cathode Vacuum Arc Deposition

Zhang

Yuan

et al. 2022

Materials

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High hardness improves the material’s load-bearing capacity, resulting in the enhancement of tribological properties. However, the high hardness is difficult to achieve for TiAlN coating due to the transformation of the close-packed structure from cubic to hexagonal and the increase in the grain size when the Al content is high. In the present study, the ultrahard TiAlN coatings (hardness > 40 GPa) are successfully developed by filtered cathodic vacuum arc technology to study the effect of nitrogen flux rate on tribological behaviors. The highest hardness of 46.39 GPa is obtained by tuning the nitrogen flux rate to achieve the regulation of Al content and the formation of nanocrystalline. The stable fcc TiAlN phase is formed via the solid-phase reaction under a high nitrogen concentration, and more aluminum atoms replace the titanium atoms in the (Ti, Al)N solid solution. The high Al content of the Ti0.35Al0.65N coating has a nanocrystalline structure and the average crystalline size is 16.52 nm. The TiAlN coating deposited at a nitrogen flux rate of 60 sccm exhibits the best properties of a combination of microhardness = 2972.91 Hv0.5, H = 46.39 GPa, E = 499.4 Gpa, ratio H/E* = 0.093 and ratio H3/E*2 = 0.403. Meanwhile, the TiAlN coating deposited at 60 sccm shows the lowest average friction coefficient of 0.43 and wear rate of 1.3 × 10−7 mm3 N−1 m−1 due to the best mechanical properties.

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Section: Resultsmentioning

confidence: 99%

Tribological Behaviors of Super-Hard TiAlN Coatings Deposited by Filtered Cathode Vacuum Arc Deposition

Zhang

Yuan

et al. 2022

Materials

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“…Many researches were conducted on CrAlN/SiO 2 [6], VN/ TiB 2 [22], ZrN/SiN X [23], TiAlN/AlN [24], TiSiN/TiN [25], TiSiN/CrAlN [26], and TiAlN/TiN [27]. e results showed that coherent growth occurs between the two layers of the nanomultilayers.…”

Section: Resultsmentioning

confidence: 99%

“…e lattice constant of AlN is 0.2491 nm and bigger than the one of TiSiN. When the AlN layer and TiSiN layer grow epitaxial, AlN layer transforms to a face-centered cubic structure under the template effect of the TiSiN layer [22][23][24][25][26][27]. e lattice constant of the TiSiN layer increases and the one of AlN layer decreases at the interface.…”

Section: Resultsmentioning

confidence: 99%

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Microstructure and Properties of TiSiN/AlN with Different Modulation Periods

Yan

Tian

Liu

et al. 2019

Advances in Materials Science and Engineering

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TiSiN/AlN nanomultilayers with different thicknesses of AlN layer were deposited on 304 stainless steel by magnetron sputtering system. X-ray diffraction, nanoindentation tester, atomic force microscopy, and friction wear tester were used to characterize microstructure and properties of TiSiN/AlN nanomultilayers. The results show that TiSiN/AlN nanomultilayers are face-centered cubic structures and exhibit a strong preferred orientation on (200) plane. The diffraction peaks of TiSIN/AlN nanomultilayer shift to a small angle. When the thickness of the AlN layer is 2 nm, the peak is highest, and the shift degree is biggest. The alternating tension and compression stress fields are formed along the growth direction of TiSiN/AlN nanomultilayers and increase the strength of the namomultilayers. When the thickness of the AlN layer is 2 nm, the maximum hardness and Young’s modulus of TiSiN/AlN nanomultilayers are, respectively, 32.8 GPa and 472 GPa, and the smallest roughness is 33.4 nm. But the friction coefficient is smallest when the thickness of the AlN layer is 1.5 nm.

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“…No spalling and delamination occurred on the multilayer coating. Multilayer structures improve the performance of hard coatings in extreme and demanding applications [ 23 , 24 ]. However, the anti−wear of hard coatings is usually evaluated by sliding wear tests, and the impact abrasive wear performance is always neglected.…”

Section: Introductionmentioning

confidence: 99%

Impact Abrasive Wear Property of CrAlN/TiSiN Multilayer Coating at Elevated Temperatures

et al. 2022

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The impact wear property of hard coatings at elevated temperatures is of particular interest for applications in nuclear power plants. This study evaluated the impact wear behavior of two CrAlN/TiSiN coatings with and without sand. Alternately grown CrAlN and TiSiN films with modulation periods of 455 and 19 nm were formed in a columnar structure. The nanomultilayer shows better impact wear resistance than multilayer films with and without sand. The energy absorption rate has a similar trend to wear rate, leading to lower rebound velocity and peak impact force of the nanomultilayer compared with that of the multilayer. CrAlN/TiSiN coatings can protect the 308L substrate from oxidation. The dominant impact wear mechanism without sand is plastic deformation, and this wear region can be defined as the percussive zone. Peeling occurs on the multilayer surface without sand after 104 percussions, leading to rapid oxidation of the 308L substrate at 500 °C. Due to the abrasion effect, the wear rate of the sample with sand increases by an order of magnitude compared to the sample without sand. The wear scar of the sample with sand can be divided into the mixing zone and the sand−affected zone from inside to outside. Fe oxides are formed beyond the unbroken coating, which may be related to the outward diffusion of Fe.

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Microstructure and properties of TiAlN/AlN multilayers with different modulation periods

Cited by 19 publications

References 22 publications

Tribological Behaviors of Super-Hard TiAlN Coatings Deposited by Filtered Cathode Vacuum Arc Deposition

Tribological Behaviors of Super-Hard TiAlN Coatings Deposited by Filtered Cathode Vacuum Arc Deposition

Microstructure and Properties of TiSiN/AlN with Different Modulation Periods

Impact Abrasive Wear Property of CrAlN/TiSiN Multilayer Coating at Elevated Temperatures

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