Chromizing

Kasprzycka, E.

doi:10.1007/978-0-387-92897-5_707

Cited by 8 publications

(8 citation statements)

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“…39 wt.% Fe. The carbon content remained constant at about 8 wt.% C, similar to the content of carbon in the type (Cr, Fe) 7 C 3 carbide, which is 9 wt.%, [1,5]. Fig.…”

Section: Resultssupporting

confidence: 60%

“…The traditional powder pack method of diffusion chromizing has been described in detail in, [1,7]. The processes were carried out in an electric furnace, equipped with a temperature control system.…”

Section: Methodsmentioning

confidence: 99%

“…There exist numerous methods of diffusion chromizing, including powder pack, gas, salt bath, etc., [1][2][3][4]. Industrial significance in current times, has been gained by the inexpensive and technologically simple powder pack method (so-called pack cementation) which consists of heating the steel in a powder mixture containing ferro-chromium, which is a source of chromium, activator (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…The diffusion chromizing processes are carried out at temperatures within the range of 900 -1100°C and times up to even 10 h, [1][2][3][4][5]. The chromized carbide layers (the CrC type carbide layer) are formed in the diffusion chromizing process on the surface of steels with a high carbon content.…”

Section: Introductionmentioning

confidence: 99%

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Archives of Metallurgy and Materials

Kasprzycka¹,

Bogdański²

2019

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The objective of the research in this work was the modification of structure of carbide-type chromized layers, by the combination of diffusion chromizing with subsequent PVD treatment, consisting of chromium nitride deposition, carried out to improve their tribological properties. As a result, hybrid layers on the surface of tool steel were obtained. For comparison, the properties of single chromized carbide layers obtained in a diffusion chromizing process were tested. Investigations of layer microstructure, their mechanical properties, surface topography, adhesion of layers to the steel substrate, as well as tribological properties were conducted. The layer microstructure was characterized by X-ray diffraction and scanning electron microscopy. Topography of the layer surface was studied by an optical profilometer. The scratch test for investigations of layers adhesion to the steel substrate was used. Testing of tribological properties (linear wear) of the layers was performed by the three-cylinder-cone method. It was shown, that hybrid layers are characterized by a significantly smaller surface roughness than that of chromized carbide layers and their wear resistance improved almost twice with respect to carbide layers.

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“…39 wt.% Fe. The carbon content remained constant at about 8 wt.% C, similar to the content of carbon in the type (Cr, Fe) 7 C 3 carbide, which is 9 wt.%, [1,5]. Fig.…”

Section: Resultssupporting

confidence: 60%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Archives of Metallurgy and Materials

Kasprzycka¹,

Bogdański²

2019

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“…Diffusion chromizing is a thermochemical treatment employed today for improving properties of steel surfaces such as wear and corrosion resistance [1][2][3][4][5]. There is a lot of bibliographical data concerning the diffusion chromizing process, in particular, problems connected with hard carbide layers produced by the pack powder method, which are quite well expounded [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Diffusion Carbide Layers Produced on Tool Steel in Chromium Chloride Atmosphere at Low Pressure

Bogdański

2014

SSP

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Diffusion chromizing of tool steel has been investigated, using a powder method modified by the use of low pressure during the process for the avoidance of the oxidation of the batch. Innovative chromizing novel processes have been carried out in a hot-wall vacuum oven. The processes have been performed in a chromium chloride atmosphere at a low pressure range from 1 to 800 hPa, with treatment temperatures of 850 to 950°C. Studies of layer thickness, its phase composition, and Cr, Fe, and C depth profiles in the diffusion zone of chromized layer have been conducted. The effect of the process parameters, such as time and temperature, on the growth kinetics of diffusion layers has also been investigated. A comparison was made between the layer thickness produced on the tool steel surface using the novel chromizing method, under low pressure, and a traditional chromizing process, by the pack powder method. Chromizing conducted at low pressure was found to be more effective for maximizing the growth rate of diffusion layers than that for chromizing by the traditional pack cementation method.

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Structure and Properties of Duplex Layers Composed of Chromium and Titanium Carbides

Kasprzycka

Tacikowski

Bogdański

2016

Materials Performance and Characterization

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The structures and properties of the CrC-TiC type duplex layers with an intermediate chromium carbide sublayer and an outer one of titanium carbide, as well as of the TiC-CrC type layers with an intermediate titanium carbide sublayer and an outer one of chromium carbide, produced on steels, were investigated. The structure of the duplex layers produced on plain carbon and alloy steel was compared with the single layers. The microstructure and chemical composition of these layers was determined by means of optical and transmission electron microscopy and X-ray phase analysis. A spectral linear analysis of the Cr, Fe, and Ti concentration in the diffusion zone was performed by means of an X-ray microanalyzer. Proof was presented that the thickness of the outer TiC layer depends on the thickness of the intermediate chromium carbide sublayer. This sublayer slows down the formation of the outer TiC layer. The structure of the chromium carbide sublayer undergoes changes during the process formation of the titanium carbide layer. The hardness and tribological properties of the layers have been determined. A comparison of CrC-TiC and TiC-CrC duplex layers with the CrC and TiC single carbide layers was performed. It was shown that the tribological properties of the CrC-TiC duplex layers are better than those of the TiC-CrC duplex layers, and those of the CrC and TiC type single carbide layers.

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Chromizing

Cited by 8 publications

References 0 publications

Archives of Metallurgy and Materials

Archives of Metallurgy and Materials

Diffusion Carbide Layers Produced on Tool Steel in Chromium Chloride Atmosphere at Low Pressure

Structure and Properties of Duplex Layers Composed of Chromium and Titanium Carbides

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