CrAlN film hardness uniformity affected by nitrogen content

Paksunchai, Chutima; Chantharangsi, Chirawat

doi:10.1063/5.0023044

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…Figure 2 shows the XRD patterns of CrAlN and CrAlBN coatings. It can be found that the position of the diffraction peak of CrAlN coating appears between the peaks of standard AlN (PDF#46-1200) and CrN (PDF#11-0065) with higher intensity, forming a metastable fcc-NaCl type structure of CrAlN, which is consistent with previous results [44,45].…”

Section: Composition Structure and Morphologysupporting

confidence: 90%

Study on Microstructure, Mechanical Properties, Tribological Properties and Service Performance of CrAlN and CrAlBN Coatings Deposited on Powder Metallurgy High-Speed Steel (PM-HSS) and Shaper Cutter by Arc Ion Plating Technique

Liu,

Lin,

Zhao

et al. 2024

Coatings

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CrAlN and CrAlBN coatings were prepared on the surface of high-speed steel and shaper cutter by physical vapor deposition (PVD) technique using arc ion source. In the process of coating preparation, the adhesive layers were deposited by low bias voltage (−40 V) and the working layers are deposited by high bias voltage (−130 V). The effects of the addition of B element on the microstructure, hardness, elastic modulus and wear resistance of CrAlBN coating were studied. The results show that B element and its compounds exist in amorphous form in the coating, resulting in lattice distortion of the coating, increase of coating hardness to 37.1 GPa, and decrease of elastic modulus to 406.2 GPa. The addition of B element increases the uniformity of the columnar structure distribution and decreases the width of the columnar structure and grain size. The resistance to elastic deformation and plastic deformation of CrAlBN coating is improved, the wear resistance is improved. The performance of CrAlN and CrAlBN coatings on shaper cutter was studied. It was found that the main failure mode of shaper cutters is boundary wear and the wear mechanism of coatings had changed obviously. CrAlBN coating is mainly due to fatigue induced failure, accompanied by some diffusion wear. The addition of B element makes the CrAlBN coating have excellent resistance to oxidative wear, abrasive wear and diffusion wear during cutting. The results show that the addition of B element can improve the microstructure and mechanical properties of CrAlN coating, and the preparation of CrAlBN coating on the surface of the shaper cutter can significantly improve the service life of the coated shaper cutter, which has significance for the development of the shaper cutter industry.

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Section: Composition Structure and Morphologysupporting

confidence: 90%

Study on Microstructure, Mechanical Properties, Tribological Properties and Service Performance of CrAlN and CrAlBN Coatings Deposited on Powder Metallurgy High-Speed Steel (PM-HSS) and Shaper Cutter by Arc Ion Plating Technique

Liu,

Lin,

Zhao

et al. 2024

Coatings

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“…As the nitrogen pressure increases, there is an increase in N content within the coating; Al content first rises from 20.03 at.% to 23.22 at.%, then declines to 18.60 at.%; Cr content initially falls from 33.10 at.% to 26.56 at.%, then climbs to 30.21 at.%; the Al/Cr ratio first rises, then falls. These variations are primarily attributed to the increased collision probability of Cr and Al ions with nitrogen due to higher nitrogen pressures, significantly impacting the film deposition process through plasma physics kinetics and surface diffusion kinetics [20,21]. In particular, at a nitrogen pressure of 3.0 Pa, substituting larger Al atoms for Cr atoms in the lattice decreases the Cr proportion and increases the Al proportion, raising the Al/Cr ratio.…”

Section: Morphology and Structure Of The Coatingsmentioning

confidence: 99%

Tribological and Corrosion Performance of CrAlN/CrN Coatings in Artificial Seawater under Varied Nitrogen Pressures

Li,

Yu,

Zou

et al. 2023

Coatings

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This study employed arc ion plating technology to deposit CrAlN/CrN coatings on stainless steel substrates, adjusting deposition pressures ranging from 1.0 Pa to 4.0 Pa. A detailed analysis of the coatings’ microstructure, wear, and corrosion features was performed using X-ray diffraction, scanning electron microscopy, nanoindentation, tribometers, profilometers, and electrochemical workstations. The study revealed that the crystalline structure of the CrAlN/CrN coatings primarily consists of cubic crystals of AlN, (Cr, Al)N, and CrN. Diffraction peak intensity analysis revealed preferential orientation in the CrAlN coatings along the (111) and (200) crystal planes. As the pressure increased to 3.0 Pa, the content of Al elements peaked, and the columnar structure became denser; at this point, the H/E* ratio reached a maximum of 0.079, indicating excellent delamination and fracture resistance of the CrAlN/CrN coating at this pressure. Tests in artificial seawater environments showed that with the increase in nitrogen pressure, the friction coefficient gradually decreased, reaching its lowest at 3 Pa, approximately 0.19. The wear rate trend aligned with the friction coefficient, recorded at a mere 2.20 × 10−7 mm3/Nm. Electrochemical polarization curve tests revealed that at 3 Pa pressure, the CrAlN/CrN coating had a corrosion potential of −0.04 V, a polarization resistance of 9.28 × 105 Ω·cm2, and a very low corrosion current of 4.81 × 10−8 A/cm2, demonstrating excellent corrosion resistance.

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Evaluation of structural and mechanical properties of CrAlN single layer coating deposited by reactive magnetron sputtering

Anwar

Priyadarshini

et al. 2022

Materials Chemistry and Physics

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CrAlN film hardness uniformity affected by nitrogen content

Cited by 3 publications

References 12 publications

Study on Microstructure, Mechanical Properties, Tribological Properties and Service Performance of CrAlN and CrAlBN Coatings Deposited on Powder Metallurgy High-Speed Steel (PM-HSS) and Shaper Cutter by Arc Ion Plating Technique

Study on Microstructure, Mechanical Properties, Tribological Properties and Service Performance of CrAlN and CrAlBN Coatings Deposited on Powder Metallurgy High-Speed Steel (PM-HSS) and Shaper Cutter by Arc Ion Plating Technique

Tribological and Corrosion Performance of CrAlN/CrN Coatings in Artificial Seawater under Varied Nitrogen Pressures

Evaluation of structural and mechanical properties of CrAlN single layer coating deposited by reactive magnetron sputtering

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