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Zumelzu, E.; Cabezas, Carlos; Opitz, O.; Quiroz, Eduardo; Pérez, Leonardo Goyos; Parada, A.

doi:10.1023/a:1022959314324

Cited by 17 publications

(16 citation statements)

References 1 publication

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“…The homogenised steel that was worn on the DIN1.7225 quality counter sliding disc had a mild wear mechanism under all of the applied loads. On the DIN1.2379 quality counter sliding disc, while a mild wear occurred at loads lower than 20 N, the wear became severe with increasing loads above 20 N. The present results are congruent to the previous studies [9][10][11][12][13][14][15][16][17][18] that wear resistance Fig. 4.…”

Section: Wear Resultssupporting

confidence: 91%

“…Even though Cr content of the investigated DIN 1.4777 quality steel was high the matrix remained austenitic due to high carbon and low Ni content were also supported by studies in the literature. 15,32,33) Since the steel has a high content of carbon and Cr, the columnar (protrusion-intended and/or saw-toothed) structure, which was expected to form on the interface of the coating/matrix after the boronising heat treatment, did not comprise. [34][35][36] The columnar structure occurring on the interface of the coating/matrix reinforces the bonding of boride layer to base metal.…”

Section: Microstructural Resultsmentioning

confidence: 99%

“…However, the carbide particles in these alloys commonly act as cathodic phases in corrosive media and are classified into two groups; the strong cathodic phase having low corrosion potential, such as Fe 3 C, Cr 23 C 6 , etc, and the weak cathodic phase that even can be oxidised in acidic media, such as intermetallic compound phase sigma. [9][10][11][12][13][14][15][16][17][18] There are limited number of studies 19,20) on wear and corrosion behaviour of steels containing high amount of Cr (i.e. more than 25% Cr) and a boronising surface.…”

Section: Introductionmentioning

confidence: 99%

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Corrosion and Wear Behaviour of Boronized high Carbon and Chromium Cast Steel

et al. 2013

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The purpose of this study was to examine the effect of boronising heat treatment on the corrosion behaviour (in two different corrosive media) and wear properties (on two different counter sliding discs) of the DIN 1.4777 quality cast steel containing 1.7% C, 30% Cr and 1.1% Si. The steel supplied as cast was exposed to homogenisation heat treatment at 1 150°C for 3,5 hours and then to boronising heat treatment at 900°C for 8 hours using the powder of Ekabor 2. An optical light microscope, SEM and XRD analyses were used to conduct microstructural characterisation of the steel investigated. Electrochemical potentiodynamic polarisation measurements were taken to evaluate corrosion behaviours of the examined steels. Wear tests were conducted in a pin-on-disc type wear device by using a load between 10 N and 60 N. While the corrosion resistance of the boronising heat treated steel deteriorated by the pitting damage mechanism within corrosive media, uniform corrosion damage enhanced the corrosion resistance of the examined boronised steel. Oxidative adhesion, cracking of oxide and/or boride layer, and severe plastic deformation mechanisms were dominant during the wear tests. Severe plastic deformation and cracking of the oxide and/or boride layer caused wear mechanism to transform from mild to severe.KEY WORDS: corrosive media; DIN1.4777 quality steel; boronising heat treatment; wear; counter sliding disc.

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Section: Wear Resultssupporting

confidence: 91%

Section: Microstructural Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Corrosion and Wear Behaviour of Boronized high Carbon and Chromium Cast Steel

et al. 2013

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“…It is very imperative for metallurgists and materials scientists to develop bearings operated in extreme corrosion conditions, such as naval aircraft engine bearings in acidic environments and others used in aggressive industry environments [33]. To control and improve the corrosion resistance of the products, understanding of the corrosion behavior and the evolution details in extreme conditions is of great technical importance.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and corrosion behavior of hot-rolled GCr15 bearing steel

2016

Appl. Phys. A

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Microstructure, corrosion behavior and evolution of hot-rolled high-carbon-chromium bearing steel were investigated using scanning electron microscopy and energy dispersive spectrometer (EDS). The results show that corrosion initiates adjacent to the network carbide, which is the initial austenite grain boundary. With the further increase in corrosion time, corrosion fraction is increased and extended into the grains. Finally, the whole grain near the network carbide is etched off and the grain boundary is detached from the sample, which forms the corroded holes. Based on the EDS analyses, it is confirmed that this corrosion behavior is resulted from the depletion of Cr as solid solute at the grain boundary. The depletion of Cr is the result of the formation of Cr carbide near the grain boundary.

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“…Formation of carbides such as Cr 7 C 3 , etc. decreases the Cr content in iron-base solid solution, especially in the vicinity of carbides and grain-boundaries, leading to sensitization, and noticeably deteriorates corrosion resistance of the alloys such as the martenstic stainless steels and high Cr cast irons [7,10].…”

Section: Introductionmentioning

confidence: 99%