Effect of QPQ nitriding time on wear and corrosion behavior of 45 carbon steel

Cai, Wei; Meng, Fanna; Gao, Xin-Yan; Hu, Jing

doi:10.1016/j.apsusc.2012.08.024

Cited by 73 publications

(26 citation statements)

References 9 publications

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“…3) Compact Fe 3 O 4 with high chemical stability was formed on the surface. Furthermore, more galvanic cells are formed in the electrochemical corrosion because of the oxides, which was confirmed by the good relevance with the relationship between corrosion resistance and the formation of oxides [13,14].…”

Section: Discussionsupporting

confidence: 62%

A novel plasma oxynitriding by using plain air for AISI 1045 steel

Liu

Chai

et al. 2015

Vacuum

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Section: Discussionsupporting

confidence: 62%

A novel plasma oxynitriding by using plain air for AISI 1045 steel

Liu

Chai

et al. 2015

Vacuum

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“…2. During salt bath nitriding, two parts surface layer is formed, an outer compound layer ε-Fe2-3(N,C) and γ'-Fe4(N,C) with a nitrogen diffusion layer (α) below it [13,18,19,20,21,22].…”

Section: Results and Discussion 31 Microstructurementioning

confidence: 99%

“…The most important and oldest method of thermo chemical surface hardening operation is nitriding operation of steel which changing the chemical properties of the surface layer [12]. Salt bath nitriding is developed as an industrial process, especially for surface modification of iron-based steels; this process technology has solved environmental problems and can be applied DOI 10.12776 to AISI 1045 steel and high alloy steels with high reaction efficiency [13][14]. Salt bath nitriding is done to obtain high surface hardness, to increase wear resistance, to improve fatigue life, and to improve corrosion resistance, high dimensional stability [15][16].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Salt Bath Nitriding Variables on Hardness Layer of Aisi 1045 Steel

Ghelloudj¹,

Djebaili²,

Hannachi³

et al. 2016

Acta Metall Slovaca

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The aim of this paper is to study and analyze the effects of a surface controlled salt bath nitriding on the microhardness of AISI 1045 steel. The nitriding process was implemented in the salt bath component at ten different times (from 1 h to 10 h) when the temperature was constant at (520ºC). The nitriding process repeated of other specimens at the same times, but the temperature was (580ºC).The microstructure of the surface layers was investigated by scanning electron microscopy (SEM) and optical microscopy. Hardness profiles were measured with lowload hardness testing to determine the growth of the case depth after nitriding. Microhardness testing was carried out on samples to investigate the hardness profile at the transition from the compound to the diffusion layer. The microhardness of the surface of the nitrided sample at 520ºC and 580ºC was observed in the range of 318-430 HV0.3 and 329-421 HV0.3, respectively. Experimental results showed that the nitrides ε-Fe2-3(N, C) and γ'-Fe4(N,C) present in the compound layer increase the microhardness , It also showed that the Increasing the salt bath nitriding parameters (treatment time and temperature) increases the surface hardness and hardness profile.

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“…QPQ treatment is a kind of valuable surface modification technology widely used for steels to obtain the required properties; a protective coating can be formed on the surface of components by QPQ process, which can significantly improve its wear resistance, especially the corrosion resistance [3][4][5][6][7]. Therefore, it is gradually used to replace plasma nitriding, soft nitriding and hard chromium plating in many applications.…”

Section: Introductionmentioning

confidence: 99%