Investigation of the formation of Al, Fe, N intermetallic phases during Al pack cementation followed by plasma nitriding on plain carbon steel

Madanipour, Hossein; Soltanieh, M.; Nayebpashaee, Nasim

doi:10.1016/j.matdes.2013.03.077

Cited by 28 publications

(5 citation statements)

References 17 publications

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“…[11,12,13] After inserting the elements into nitriding furnace and after closing the bell exhausting the origin oxygen atmosphere to the pressure 10 Pa is needed and consequently increases the pressure in the space where the nitriding is realized to 500 Pa. By heating the furnace to 500 °C the conditions for "cleaning" are achieved. The cleaning process lasts 30 min at voltage 800 V. [14,15] Nitrogen saturation itself runs at the nitriding temperature from 490 °C to 500 °C whereby the correction of saturation by changing the pulse length of discharge or by changing temperature setup on the walls of the bell is realized. [16,17,18,19].…”

Section: Process Of Nitridingmentioning

confidence: 99%

Increase of Surface Hardness of Gunpoint According to Quality Rise of Firearm

Bridik¹,

Cicakova²

2014

ujme

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Section: Process Of Nitridingmentioning

confidence: 99%

Increase of Surface Hardness of Gunpoint According to Quality Rise of Firearm

Bridik¹,

Cicakova²

2014

ujme

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“…These methods include physical vapor deposition [ 12 , 13 , 14 ], magnetron sputtering [ 12 , 13 ], an ion beam-assisted process [ 15 ], and chemical vapor deposition at higher temperatures [ 16 ]. Many researchers have examined the creation of nitride by different duplex surface treatments in recent years, such as chromizing, aluminizing [ 17 , 18 ], and titanizing [ 19 ] by the pack cementation technique, followed by plasma nitriding. However, there is little information about the production of niobium nitride films using this approach [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

Study of the Role of Titanium and Iron Cathodic Cages on Plasma-Nitrided AISI 430 Ferritic Stainless Steel

Babur

Noori²,

Iqbal

et al. 2022

Micromachines

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In contrast to austenitic and martensitic stainless steels, ferritic stainless steels have a lower hardness and wear resistance but exhibit excellent corrosion resistance. Due to this fact, their use in the aerospace, automobile, and house construction industries is restricted. Several methods have been utilized to enhance the tribological characteristics of ferritic stainless steels. In this work, titanium nitride coating has been carried out by using a cathodic cage of titanium material, and later on, the titanium cathodic cage is replaced by an AISI-304 cathodic cage in a CCPN chamber to form iron nitride coating on AISI-430 ferritic stainless steel coupons through a plasma nitriding process for 4 h at a fixed temperature of 400 °C. The microstructures and mechanical traits of all processed and control coupons were analyzed using scanning electron microscopy, X-ray diffraction, ball-on-disc wear tester, and microhardness tester techniques. The results showed that hardness increased up to 1489 HV with the titanium cage, which is much higher than the hardness of the base material (270 HV). The titanium cage-treated coupons have high layer thickness, smooth surface morphology, and a minimum crystallite size of 2.2 nm. The wear rate was reduced up to 50% over the base material after the titanium cage plasma treatment. The base coupon exhibited severe abrasive wear, whereas nitrided coupons exhibited dominant adhesive wear. In the iron nitride coatings, this effect is also important, owing to the more influential cleaning process in a glow discharge, and the better adhesion with enhanced interlayer thickness is attributed to the fact that the compliance of the interlayer minimizes shear stresses at the coating–substrate interface. The use of a graded interface improves adhesion compared with the case where no interlayer is used but a titanium interlayer of comparable thickness provides a significant increase in measured adhesion. For both titanium and iron nitride films, there is a reduction in wear volume which is a function of interlayer thickness; this will have a substantial effect on wear lifetime. Thus by careful control of the interlayer thickness and composition, it should be possible to improve coating performance in tribological applications.

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“…Aluminizing, by such methods as hot-dipping using molten aluminum 1,2) and subsequent heat treatment, 3) deposition of thin aluminum foil and subsequent heat treatment, 4) cladding, 5) pack cementation, 6) cold spray, 7) explosive welding 8) and slurry aluminizing, 9) is widely employed as an effective modification technique. Although these aluminizing techniques can create Fe-Al intermetallic compound layers on the steel surfaces, [1][2][3][4][5][6][7][8][9] these techniques have some disadvantages. For example, non-reacted alumi-num with low hardness can remain on the surface of the hot-dipped steel.…”

Section: Introductionmentioning

confidence: 99%

“…1,2) Long treatment times lasting several hours or multiple step treatments are required to form compound layers with high hardness. [3][4][5][6][7][8] There is a report on the formation of the Kirkendall pores in the created compound layers. 9) Atmospheric-controlled induction-heating fine particle peening (AIH-FPP), a surface modification technique proposed by the authors, is expected to solve the problems encountered in conventional aluminizing techniques.…”

Section: Introductionmentioning

confidence: 99%

Formation of Fe–Al Intermetallic Compound Layer by AIH-FPP and its Effect on Tribological Properties of Stainless Steel

Takesue

Misaka²,

Komotori

2021

ISIJ Int.

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In order to increase the surface hardness and improve the tribological properties of stainless steel, Fe-Al intermetallic compound layers were created by atmospheric-controlled induction-heating fine particle peening (AIH-FPP). The surface microstructure of the stainless steel treated with AIH-FPP was characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction, and micro-Vickers hardness testing. In addition, the tribological properties were investigated by reciprocating ball-on-disk wear tests. When high-speed steel particles coated with thin aluminum layers were used as the shot particles, Fe-Al intermetallic compound layers were formed at the surfaces of the stainless steel with increased heating time during AIH-FPP. This is because aluminum was transferred from the shot particles, and the temperature at the treated surface increased as a result of a combustion synthesis reaction. When the heating temperature after FPP was increased, the transferred aluminum and nitrogen in the atmosphere reacted, which resulted in the formation of aluminum nitrides in addition to Fe-Al intermetallic compounds. The tribological properties of the stainless steel were improved by AIH-FPP since high-hardness layers were created. The results indicate that the formation of an Fe-Al intermetallic compound layer with high hardness by AIH-FPP is effective for modifying the tribological properties of the stainless steel within a relatively short span of time.

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Investigation of the formation of Al, Fe, N intermetallic phases during Al pack cementation followed by plasma nitriding on plain carbon steel

Cited by 28 publications

References 17 publications

Increase of Surface Hardness of Gunpoint According to Quality Rise of Firearm

Increase of Surface Hardness of Gunpoint According to Quality Rise of Firearm

Study of the Role of Titanium and Iron Cathodic Cages on Plasma-Nitrided AISI 430 Ferritic Stainless Steel

Formation of Fe–Al Intermetallic Compound Layer by AIH-FPP and its Effect on Tribological Properties of Stainless Steel

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