Effects of tailored nitriding layers on comprehensive properties of duplex plasma-treated AlTiN coatings

Deng, Yang; Tan, Chaolin; Wang, Yi; Ling, Chen; Cai, Panpan; Kuang, Tongchun; Lei, Shumei; Zhou, Kesong

doi:10.1016/j.ceramint.2017.03.209

Cited by 37 publications

(13 citation statements)

References 19 publications

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“…The hardness was increased by the nitrided layer, which provided enough support for the hard coatings even under heavy loads. This fact was also confirmed by He and Deng et al [35,40]. Surface hardening by plasma nitriding improved the heavier load bearing capacity for AlCrSiN-coated specimens.…”

Section: Resultssupporting

confidence: 71%

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Effect of Plasma Nitriding Pretreatment on the Mechanical Properties of AlCrSiN-Coated Tool Steels

Chang

Amrutwar

2019

Materials

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Surface modification of steel has been reported to improve hardness and other mechanical properties, such as increase in resistance, for reducing plastic deformation, fatigue, and wear. Duplex surface treatment, such as a combination of plasma nitriding and physical vapor deposition, achieves superior mechanical properties and resistance to wear. In this study, the plasma nitriding process was conducted prior to the deposition of hard coatings on the SKH9 substrate. This process was done by a proper mixture of nitrogen/hydrogen gas at suitable duty cycle, pressure, and voltage with proper temperature. Later on, the deposition of gradient AlCrSiN coatings synthesized by a cathodic-arc deposition process was performed. During the deposition of AlCrSiN, CrN, AlCrN/CrN, and AlCrSiN/AlCrN were deposited as gradient interlayers to improve adhesion between the coatings and nitrided steels. A repetitive impact test (200k–400k times) was performed at room temperature and at high temperature (~500 °C) to assess impact resistance. The results showed that the tribological impact resistance for the synthesized AlCrSiN increased because of a progressive hardness support. The combination of plasma nitriding and AlCrSiN hard coatings is capable of increasing the life of molding dies and metal forging dies in mass production.

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Section: Resultssupporting

confidence: 71%

“…The duplex treatment combining PN and hard coating exhibited higher hardness as compared to non-duplex-treated samples. The nitrided layer was helpful for the progressive hardness distribution, inducing the gradual transition of mechanical properties improving the wear resistance [35,36].…”

Section: Resultsmentioning

confidence: 99%

Effect of Plasma Nitriding Pretreatment on the Mechanical Properties of AlCrSiN-Coated Tool Steels

Chang

Amrutwar

2019

Materials

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“…The adhesion of the coatings to the substrate is a fundamental factor in all the applications to prolong the lifetime of workpieces. Several studies have demonstrated that duplex processes, so as PVD hard coatings deposited onto ion nitrided stainless steel improved the adhesion and wear resistance because the nitrided substrate acts as mechanical support for the hard coating, avoiding a plastic deformation that could cause the coating failure due to the high hardness gradients [9][10][11][12][13] . It is well known that the presence of oxide layers and contaminants on the stainless steels are also present after ion nitriding and the removing of them is a problem necessary to solve before the coating process.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Pre-Treatments and Process Temperature on the Adhesion of TiN Films Deposited by PBII&D Over Nitrided Austenitic Stainless Steel

et al. 2019

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In this work the influence of pre-treatment cleaning processes in the adhesion of TiN films deposited by the plasma based ion implantation and deposition (PBII&D) process over plasma nitrided AISI 316L stainless steel was investigated, varying the gas composition, the duration of the sputtering process and the temperature in the same deposition chamber. The TiN film morphology was scrutinized with scanning electron microscopy on the surface complemented with focus ion beam for the cross section. The film microstructure was characterized with X ray diffraction. The adhesion of the coatings was studied using the Scratch Test with constant load at different values and the Rockwell C indentation method as well. It was found that only with the sputtering carried out in a H 2-Ar gas mixing at 300 ºC temperature used as pre-treatment was successful to prepare the nitrided surface for the subsequent TiN deposition by the PBII&D process.

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“…Hard coatings have been widely used to protect and increase the lifetime of industrial components, such as cutting tools, dies, and forming tools. Their excellent properties, such as high hardness, toughness, good tribological properties, and wear and oxidation resistance, make them ideal for applications in which industrial components are under high and constant loads [1][2][3]. This family contains different coatings (e.g., AlTiN, TiN, CrN, and AlCrN), and the addition of metallic or non-metallic elements, such as Ti, Si, Al, and C, and the deposition parameters have a strong influence on their physical, chemical, and mechanical properties [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Improved Adhesion and Tribological Properties of AlTiN-TiSiN Coatings Deposited by DCMS and HiPIMS on Nitrided Tool Steels

et al. 2021

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Hard coatings, such as AlTiN-TiSiN, deposited by Physical Vapor Deposition (PVD) techniques are widely used in industrial applications to protect and increase the lifetime of industrial components, such as cutting tools, dies, and forming tools. Despite their great properties, such as high hardness and wear and oxidation resistance, they are limited in cases of severe conditions due to the poor adhesion between the coating and the substrate. Duplex treatments have commonly been used to improve the adhesive properties of PVD coatings, especially those of the cathodic arc evaporation type. The purpose of this study is to achieve coatings with the good properties of the Magnetron Sputtering processes but with higher adhesion than that achieved with these techniques, thus achieving coatings that can be used under the most severe conditions. In this work, an AlTiN-TiSiN coating was deposited by a combination of DC Magnetron Sputtering (DCMS) and High-Power Impulse Magnetron Sputtering (HiPIMS) after a gas nitriding pretreatment on 1.2379 and Vanadis 4 tool steels. Mechanical (ultra-microhardness and scratch tests) and tribological tests were carried out to study the improvement in the properties of the coating. Duplex-treated samples showed improved adhesion between the coating and the substrate, with second critical load (Lc2) values greater than 100 N. Furthermore, they showed great toughness and wear resistance. These results show that this type of coating technique could be used in the most extreme applications and that they can compete with other techniques and coatings that to date they have not been able to compete with.

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Effects of tailored nitriding layers on comprehensive properties of duplex plasma-treated AlTiN coatings

Cited by 37 publications

References 19 publications

Effect of Plasma Nitriding Pretreatment on the Mechanical Properties of AlCrSiN-Coated Tool Steels

Effect of Plasma Nitriding Pretreatment on the Mechanical Properties of AlCrSiN-Coated Tool Steels

Influence of the Pre-Treatments and Process Temperature on the Adhesion of TiN Films Deposited by PBII&D Over Nitrided Austenitic Stainless Steel

Improved Adhesion and Tribological Properties of AlTiN-TiSiN Coatings Deposited by DCMS and HiPIMS on Nitrided Tool Steels

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