Effect of boronizing on the cyclic oxidation of stainless steel

Dokumacı, Esra; Özkan, İlker; Önay, Bülent

doi:10.1016/j.surfcoat.2013.04.047

Cited by 33 publications

(14 citation statements)

References 14 publications

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“…Pack-boriding has emerged as one of the most promising and effective surface modification routes to produce hard boride phases at the surface of the engineering alloys, enhancing its surface properties and thus, making it withstand against the surface degradation phenomenon such as wear, corrosion, and oxidation [1][2][3]. Boronizing, a thermo-chemical treatment, is accompanied by the controlled diffusion of boron into the metal surface producing different phases of metal borides (M-B, M = Fe, Cr, Ti, Ni, V, Mo, Mn, W, etc.)…”

Section: Introductionmentioning

confidence: 99%

Pack-boriding of low alloy steel: microstructure evolution and migration behaviour of alloying elements

Litoria

Figueroa

Bim

et al. 2019

Philosophical Magazine

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Low alloy steel was pack-borided at different processing temperatures (at 850, 950, and 1050 o C) and times (2, 4, and 6 h). The microstructural characterization of boronized steel showed the presence of three zones, namely boronized region containing finer grains and columnar geometry of (Fe, M) 2 B (where M = Cr, Mn, Mo, and Ni), transition zone, and non-boronized core. The concentrations of the alloying elements in (Fe, M) 2 B were increased from the surface to the core of the specimen. The pattern of slope variation of boron concentration-depth profile (obtained using GDOES) was linked with the boride morphology and process temperature. Pack-boriding of steel led to the development of systematic trend in slope variation of overall concentrationdepth profiles of the alloying elements. The composition and morphology of boride affected the trend of slope variation for the boride-forming alloying elements. However, for Al and Si, the trend of slope variation was connected to the boride morphology and the composition of the matrix. Chemistry of the matrix was strongly dependent on the migration kinetics of the alloying elements during the boride growth. The migration kinetics of Cr, Mn, Mo, and C were found almost equivalent to the rate of boride growth. However, Ni, Al, and Si were migrated at a slower rate. Si showed the lowest migration kinetics among the alloying elements. The concentrations of the alloying elements having higher migration kinetics remained constant in the matrix during the boride growth.

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Section: Introductionmentioning

confidence: 99%

Pack-boriding of low alloy steel: microstructure evolution and migration behaviour of alloying elements

Litoria

Figueroa

Bim

et al. 2019

Philosophical Magazine

View full text Add to dashboard Cite

show abstract

“…B 2 O 3 melts and covers the sample surface. The presence of liquid B 2 O 3 could be efficient in retarding the oxidation kinetics as this phase can act as a protective diffusion barrier over the substrate [30]. B 2 O 3 has not been detected by XRD in the present study, probably due to its non-crystalline nature.…”

Section: Oxidation Stability Of Boride Coatingsmentioning

confidence: 53%

“…For boronized steel, the oxidation resistance was higher compared to unboronized steel [27][28][29][30]. The superior oxidation resistance is mainly attributed to the formation of different iron borates and boron oxide scales, respectively [27][28][29].…”

Section: Introductionmentioning

confidence: 96%

Oxidation stability of boride coatings

Ptačinová¹,

Drienovský²,

Palcut³

et al. 2016

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In this work, plain, low carbon steel S235JRG1 was boronized at 1273 K for 45-150 min by using a Durborid powder. The microstructure, phase constitution and oxidation behavior of the resulting boride layers have been investigated. Layers with an average thickness of 76-123 µm have been produced. The boride layer has a distinct tooth-like microstructure. It is composed of Fe2B and FeB in unequal amounts. The boride layer oxidation behavior has been investigated by a simultaneous thermal analysis in a flowing synthetic air at 873-1173 K for 21-24 h. A parabolic oxidation of the boride layer has been observed. The rate constants are found between 1.039 × 10 −9 to 3.781 × 10 −6 kg 2 m −4 s −1 , depending on temperature and oxidation time. The activation energy of oxidation at temperatures below 1173 K has been estimated to be 93 kJ mol −1 . At 1173 K, two successive parabolic periods have been found, followed by a breakaway oxidation behavior. The oxide scale of the boronized steel is composed of different iron oxides and iron borates. The oxidation mechanisms of boride coatings are discussed and implications towards high temperature stability are provided.K e y w o r d s : boronizing, high temperature oxidation, X-ray diffraction, thermogravimetric analysis

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“…In the case of borided high chromium steel, the properties remain similar: Dybkov et al even found a strong increase of the abrasive wear resistance when the chromium content increases in the substrate [26]. The boriding layers are also appropriate for cyclic oxidation conditions [27]. They demonstrated significant increase of the resistance to the corrosion by molten aluminum, compared to untreated stainless steel [28] and to hot work tool steel [29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Sliding Wear Behavior of Friction Couples Primarily Selected for Corrosion Resistance: Iron Boride/Iron Boride and Iron Boride/Yttria-Stabilized Zirconia

D’Ans

Debouverie

2018

Metals

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Wear mitigation in a sliding couple is challenging if wear has to be minimized on both surfaces. In this paper, ball-on-disk testing is performed on sliding couples where both surfaces (ball and disk) are treated for wear resistance. Studied materials are pack borided H13 tool steel (ASTM A681), pack borided AISI 420 stainless steel (ASTM A276) and plasma sprayed yttria-stabilized zirconia (YSZ). Borided H13 steel exhibits a single phase Fe2B layer, while AISI 420 has a double phase layer, with FeB on the outer surface. Both FeB/Fe2B and FeB/YSZ couples generate three-body abrasion. In the latter case, mass transfer occurs from the ball to the disk as well. Friction coefficient is ~0.6 for the AISI 420/Fe2B and FeB/Fe2B sliding pairs, with less vibration on the latter and wear rates close to 10−3 mm³·(N·m)−1 for both the ball and the disk. In comparison, the FeB/YSZ pair has a friction coefficient of ~0.65, a similar total mass loss, but a much higher wear rate for YSZ than for FeB.

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Effect of boronizing on the cyclic oxidation of stainless steel

Cited by 33 publications

References 14 publications

Pack-boriding of low alloy steel: microstructure evolution and migration behaviour of alloying elements

Pack-boriding of low alloy steel: microstructure evolution and migration behaviour of alloying elements

Oxidation stability of boride coatings

Sliding Wear Behavior of Friction Couples Primarily Selected for Corrosion Resistance: Iron Boride/Iron Boride and Iron Boride/Yttria-Stabilized Zirconia

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