Surface structure of boride layers grown on Fe-C-Ni alloys

Carbucicchio, M.; Meazza, G.; Palombarini, G.

doi:10.1007/bf01203474

Cited by 35 publications

(11 citation statements)

References 12 publications

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“…Critical loads determined in iron borides formed on AISI 304 steel are lower compared to the work of Alloui et al 8 who borided XC38 steel. The effects of the alloying elements of AISI 304 steel (chromium and nickel) play an important role in the 25 and promote cracking and eventual cohesive/adhesive failure during the pass of indenter in the scratch test. Second, the saw-tooth interface morphology is reduced due to Cr and Ni elements compared of low carbon steels, causing the adherence between the phases to decrease.…”

Section: Scratch Testsmentioning

confidence: 99%

Damage Mechanisms in AISI 304 Borided Steel: Scratch and Daimler-Benz Adhesion Tests

et al. 2015

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In this study, damage mechanisms in the FeB/Fe 2 B coatings formed on the surface of AISI 304 steel are determined by adhesion tests. First, the boriding of the AISI 304 steel was carried out through the powder-pack method at 1223 K in the range from 2-10 h of exposure time. After treatment, Berkovich depth-sensing indentation test were conducted; the result showed tensil and compressive residual stresses in the FeB and Fe 2 B, respectively. The adhesion of borided steels was evaluated by the Daimler-Benz Rockwell-C and scratch test. Based on the scratch tracks, the chipping was the predominant mechanism at 2 and 6 h, with critical loads of 35 and 43 N, respectively; while spalliation was determined at 27 N for 10 h. Also, hertzian and tensil cracks, buckling and compressive delamination were determined in the AISI 304 borided steel by scanning electron microscope.

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Section: Scratch Testsmentioning

confidence: 99%

Damage Mechanisms in AISI 304 Borided Steel: Scratch and Daimler-Benz Adhesion Tests

et al. 2015

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“…1c and d) show that the coatings consist of two reaction products: Fe 2 B and FeB. On the basis of the knowledge acquired up to now on boride coatings grown on iron alloys [4,6], it is assumed that Fe 2 B grew at the interface with the substrate and FeB outside. On iron, both compounds display a strong (002) preferred orientation while, on the Fe 64 Ni 36 alloy, FeB (i) is only present in very small amounts, and (ii) formed without preferred orientations on a (002)-textured Fe 2 B (Fig.…”

Section: Resultsmentioning

confidence: 98%

“…alloys with Ni contents up to around 10 wt.% [3][4][5][6]. It has been reported that the growth is controlled by inward diffusion of B which, moving preferentially along a [001] direction through both FeB and Fe 2 B lattices, gives rise to ragged FeB-Fe 2 B and Fe 2 B-Fe interfaces.…”

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confidence: 99%

Formation and characterization of boride coatings thermochemically grown on the Fe64Ni36 alloy

et al. 2009

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Boride coatings were grown on Armco iron and Fe 64 Ni 36 alloy at 850 • C for 20 min and 1 h, using a high boron potential powder constituted by KBF 4 -activated amorphous boron. The coatings were characterized by X-ray diffraction, Mössbauer spectroscopy and metallographic techniques. The use of high boron potential media allows iron borides to form with high Ni contents because of a considerable reduction of the selective reactivity of boron towards Fe and Ni. As a consequence of the isomorphism between Fe 2 B and Ni 2 B and between FeB and NiB, the high amounts of Ni in iron borides do not significantly modify the XRD patterns, while they give rise to remarkable variations in the hyperfine parameters.

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“…Boronizing treatment It should be noted that the morphology of borided layer formed on 316L SS has not the shape of the needlelike oriented perpendicular to the surface that always encountered during the boriding carbon steels. This is justified, according to some authors [12][13][14][15][16][17] by the presence of a significant amount of alloying elements (Cr, Ni, Mo, etc.) in 316L SS, which delays the diffusion of boron atoms in their favorite directions (002) and leads to the formation of a front (layer/substrate interface) more or less regular between the formed layer and the rest of material [15,16].…”

Section: Resultsmentioning

confidence: 99%

“…This is justified, according to some authors [12][13][14][15][16][17] by the presence of a significant amount of alloying elements (Cr, Ni, Mo, etc.) in 316L SS, which delays the diffusion of boron atoms in their favorite directions (002) and leads to the formation of a front (layer/substrate interface) more or less regular between the formed layer and the rest of material [15,16]. The various means used for characterization of the borided layer formed on the surface of 316L SS show that the layer formed on the surface is composed of a complex layer (many phases) as shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Effect of Boronizing on the Oxidation Resistance of 316L Stainless Steel

2017

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The effect of boronizing treatment on oxidation at high temperature on 316L stainless steel was studied at 850, 900, 950, and 1000• C in air, for holding times between 0.25 and 24 h. The oxidation resistance of unboronized and boronized specimens was studied isothermally by thermogravimetric analyzer. The oxidation rate constant represented as a parabolic rate constant Kp was evaluated. Optical microscopy, X-ray diffraction, and the scanning electron microscopy were used for surface characterizations. The experimental results show that boronized coating increases the resistance of stainless steel 316l about twice and prevents oxygen from penetrating into the stainless steel substrate at the temperatures between 850 and 1000• C.

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Surface structure of boride layers grown on Fe-C-Ni alloys

Cited by 35 publications

References 12 publications

Damage Mechanisms in AISI 304 Borided Steel: Scratch and Daimler-Benz Adhesion Tests

Damage Mechanisms in AISI 304 Borided Steel: Scratch and Daimler-Benz Adhesion Tests

Formation and characterization of boride coatings thermochemically grown on the Fe64Ni36 alloy

Effect of Boronizing on the Oxidation Resistance of 316L Stainless Steel

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