Characteristics of Duplex Coating on Austenitic Stainless Steel

Joska, Zdeněk; Kadlec, Jaromír; Hruby, Vojtech; Mrázková, Tereza; Maňas, Karel

doi:10.4028/www.scientific.net/kem.465.255

Cited by 10 publications

(13 citation statements)

References 3 publications

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“…It has been observed that a hybrid surface treatment consisting of plasma nitriding and hard coatings significantly improved the mechanical and friction-wear properties of materials, as well as the coating adhesion strength [ 16 , 17 , 18 ]. Plasma nitriding, which generates a harder barrier between the soft substrate and the hard coating [ 19 ], plays a significant role in this hybrid surface treatment [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Boron and Vanadium Addition on Friction-Wear Properties of the Coating AlCrN for Special Applications

et al. 2021

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Cutting tools have long been coated with an AlCrN hard coating system that has good mechanical and tribological qualities. Boron (B) and vanadium (V) additions to AlCrN coatings were studied for their mechanical and tribological properties. Cathodic multi-arc evaporation was used to successfully manufacture the AlCrBN and AlCrVN coatings. These multicomponent coatings were applied to the untreated and plasma-nitrided surfaces of HS6-5-2 and H13 steels, respectively. Nanoindentation and Vickers micro-hardness tests were used to assess the mechanical properties of the materials. Ball-on-flat wear tests with WC-Co balls as counterparts were used to assess the friction-wear capabilities. Nanoindentation tests demonstrated that AlCrBN coating has a higher hardness (HIT 40.9 GPa) than AlCrVN coating (39.3 GPa). Steels’ wear resistance was significantly increased by a hybrid treatment that included plasma nitriding and hard coatings. The wear volume was 3% better for the AlCrBN coating than for the AlCrVN coating on H13 nitrided steel, decreasing by 89% compared to the untreated material. For HS6-5-2 steel, the wear volume was almost the same for both coatings but decreased by 77% compared to the untreated material. Boron addition significantly improved the mechanical, tribological, and adhesive capabilities of the AlCrN coating.

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Section: Introductionmentioning

confidence: 99%

Effect of Boron and Vanadium Addition on Friction-Wear Properties of the Coating AlCrN for Special Applications

et al. 2021

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“…Hybrid surface treatments consisting of plasma nitriding and hard PVD coating have been proven to be successful in improving mechanical properties, wear and corrosion resistance of materials (9,10,11,12). Many studies show that, the pretreatment improved markedly the wear resistance and the stability of the coating in the wear test (9,10,11).…”

Section: Introductionmentioning

confidence: 99%

Effects of Hybrid Surface Treatment Composed of Plasma Nitriding and CrN Coating on Friction-Wear Properties of Stainless Steel

Nguyen¹,

Svoboda²,

Sedláček

et al. 2021

ECS Trans.

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This study was conducted to investigate the effect of hybrid surface treatment composed of plasma nitriding (PN) and chromium nitride (CrN) coating on the friction-wear properties, the adhesion strength of AISI 316L stainless steel. The CrN coatings with the thickness of 1.0 µm and 2.2 µm were formed on the surfaces of both substrates with plasma nitriding (PN/CrN coating) and without plasma nitriding (CrN coating). The plasma nitriding, CrN coatings, and the hybrid treatment improved markedly the friction-wear properties of the stainless steel. The plasma nitriding generated a hardened layer between the soft substrate and the thin hard coatings and improved markedly friction-wear properties of the CrN-coated stainless steel and the adhesion of the CrN coatings.

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“…[1][2][3][4][5] The issue of nitrided layers formed on austenitic steels has been intensively solved since the 1990s, when the properties of these layers such as their depth, hardness, abrasion resistance and their influence on the corrosion resistance of steels are investigated. [6][7][8][9][10]. Another possible application of such treated surfaces is as a transition layer between a soft backing material such as austenitic steels and a very hard and thin PVD coating [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Hardness of Nitrided Layers Treated by Plasma Nitriding

Joska

Pokorny

Kadlec

et al. 2020

APP

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Stainless steels, particularly the austenitic stainless grades are widely used in many industries due to good corrosion resistance, but very poor mechanical properties as surface hardness and wear resistance limit its possible use. Plasma nitriding is one of the few ways to increase the surface hardness of these steels, even though this will affect its corrosion resistance. This paper focuses on the description of the mechanical properties of nitrided layers in the two most widespread austenitic stainless steels AISI 304 and AISI 316L. The microstructure and properties of nitrided layers were evaluated by metallography and microhardness measurement. Surface properties of nitrided steels were characterized by Martens hardness. The results show that plasma nitriding created very hard nitrided layers with thickness about 40 μm and microhardness about 1300 HV0.05. Surface hardness measurements have shown that the maximum values for both steels are about 8.5 GPa, but have different behaviour under higher loads, when the AISI 316L nitrided layer began to crack on the surface and sink.

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Characteristics of Duplex Coating on Austenitic Stainless Steel

Cited by 10 publications

References 3 publications

Effect of Boron and Vanadium Addition on Friction-Wear Properties of the Coating AlCrN for Special Applications

Effect of Boron and Vanadium Addition on Friction-Wear Properties of the Coating AlCrN for Special Applications

Effects of Hybrid Surface Treatment Composed of Plasma Nitriding and CrN Coating on Friction-Wear Properties of Stainless Steel

Hardness of Nitrided Layers Treated by Plasma Nitriding

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