Microstructure and Friction Parameters
Of the Surface Layer of Sintered Stainless Steels

Lisiecka, Barbara; Dudek, A.

doi:10.5604/01.3001.0013.5964

Cited by 2 publications

(3 citation statements)

References 24 publications

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“…The most important problem was to choose melting parameters to ensure the change in the physical and chemical properties of the steel surface. Results presented in this study are part of advanced research conducted by the authors [6,12,26,31,33]. Alloying the surfaces of sintered stainless steels yielded a gradual change in the chemical composition of the surface layer vs. distance from the surface of the modified materials.…”

Section: Methodsmentioning

confidence: 92%

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Atmospheric Plasma Spraying (APS) and Alloying as Methods to Modify Properties of the SSS Surface Layers

Lisiecka¹,

Dudek²,

Ulewicz³

2020

Komunikácie

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Use of the powder metallurgy (PM) in production of various components has been growing in the automotive industry, including production of sintered stainless steels (SSSs). This study aims to improve the functional properties of SSSs by formation of the Cr3C2-NiCr coating by APS method. The next stage involved alloying of the surface of SSSs using the gas tungsten arc welding (GTAW). Analysis of microstructures was carried out using microscopy (metallographic microscope and scanning electron microscope). Furthermore, the study presents XRD (X-ray powder diffraction) examinations, mechanical properties and surface roughness measurements. The presented modification improved properties of the surface layers examined in the study and enabled a reduction in the wall thickness of the detail, which is important factor in the automotive and transport industry.

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Section: Methodsmentioning

confidence: 92%

“…Preparation of the multiphase sinters, used for examinations, was described in detail in the paper [33]. Table 1 shows the contents of individual elements in the powders used to obtain sinters.…”

Section: Methodsmentioning

confidence: 99%

Atmospheric Plasma Spraying (APS) and Alloying as Methods to Modify Properties of the SSS Surface Layers

Lisiecka¹,

Dudek²,

Ulewicz³

2020

Komunikácie

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“…Attention was paid to the influence of alloying elements and ceramic reinforcements, their dispersion into the stainless steel matrix, and the importance of the matrix-reinforcement interface. A combination of properties (e.g., very good mechanical strength or corrosion resistance) makes SSS enjoy more and more interest and causes it to be a very attractive material for numerous applications [ 13 , 14 , 15 , 16 ]. For example, Kovaci H. and Seçer Y., in their research [ 17 ], proved the improvement of the service life of AISI 316L biomedical implants by nitriding followed by polishing and Ti-C:H sputtering.…”

Section: Introductionmentioning

confidence: 99%

Laser Surface Alloying of Sintered Stainless Steel

et al. 2022

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A characteristic feature of sintered stainless steel (SSS) is its porosity. Porosity results in a lower density of steel, making attractive components for producing lightweight structures and materials used in industry (e.g., the automotive industry or aerospace). Scientists also observe that porosity adversely affects steel’s properties, especially its strength properties. One of the proposals for improving the discussed properties is the use of surface treatment of sintered stainless steels, e.g., with the use of concentrated energy sources such as plasma beams or laser beams. However, this proposal is an incidental subject of research, which is not justified from the point of view of the obtained research results presented by a few research groups. In this study, the surface modification (surface treatment) of sintered stainless steel was presented. The authors proposed the use of two surface treatments in order to compare them and obtain the best results. The first treatment was the deposit of Cr3C2–NiCr coatings on SSS surfaces using the atmospheric plasma spraying (APS) method. The second treatment was to create surface layers on SSSs by laser alloying the surface with a CO2 laser. Due to high precision and ease of automation, the most common methods in surface alloying treatment are laser technologies. This research’s main aim was to analyze the microstructure and strength properties of the SSS surface layer. The research confirms that applying the Cr3C2–NiCr coating and modifying the surface layer through the laser alloying method improves the mechanical properties of SSSs.

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Microstructure and Friction Parameters Of the Surface Layer of Sintered Stainless Steels

Cited by 2 publications

References 24 publications

Atmospheric Plasma Spraying (APS) and Alloying as Methods to Modify Properties of the SSS Surface Layers

Atmospheric Plasma Spraying (APS) and Alloying as Methods to Modify Properties of the SSS Surface Layers

Laser Surface Alloying of Sintered Stainless Steel

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