Improved fracture toughness of boride coating developed with a diffusion annealing process

Campos-Silva, I.; Flores-Jiménez, M.; Rodríguez-Castro, G.A.; Hernández-Sánchez, Enrique; Martínez-Trinidad, J.; Tadeo-Rosas, Raúl

doi:10.1016/j.surfcoat.2013.05.050

Cited by 62 publications

(10 citation statements)

References 16 publications

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“…They found that the total elimination of FeB layer was after about 1 h. The diusion annealing of previously packborided AISI 1045 steel was also studied by Campos-Silva et al [39]. Boronizing parameters were as follows: 1223 K and 8 h. The annealing process, carried out at 1273 K for 8 h, caused that FeB phase disappeared completely.…”

Section: Fe2b Bmentioning

confidence: 97%

Determination of the Diffusion Coefficients of Boron in the FeB and Fe₂B Layers Formed on AISI D2 Steel

et al. 2015

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In the present work, a diusion model was applied to estimate the boron diusion coecients in the FeB and Fe2B layers during the pack-boriding of AISI D2 steel in the temperature range of 12231323 K during a variable exposure time between 1 and 8 h. The mass balance equations were formulated at each growing interface by considering the eect of boride incubation times. The estimated values of boron activation energies in the FeB and Fe2B layers were compared with the literature data. Validation of the present model was made by comparing the experimental thickness of each boride layer, taken from the literature data, with the predicted values. In addition, a simple equation was suggested to estimate the required time to obtain a single Fe2B layer by diusion annealing.

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Section: Fe2b Bmentioning

confidence: 97%

Determination of the Diffusion Coefficients of Boron in the FeB and Fe₂B Layers Formed on AISI D2 Steel

et al. 2015

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“…This should be considered in generating single-layer Fe 2 B or in eliminating the FeB layer by a secondary process, to improve the wear resistance by improving the fracture toughness of the boride layers. 33) Fig. 8 Wear rate as a function of the treatment conditions according to Table 1 (a) considering the non-borided sample, and (b) only the treated samples.…”

Section: Wear Testsmentioning

confidence: 99%

Tribological Behavior of Borided AISI 316L Steel with Reduced Friction Coefficient and Enhanced Wear Resistance

et al. 2019

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This study evaluates the tribological behavior of borided AISI 316L steel. The treatment time was set to 2, 4, and 6 h at temperatures of 850, 900, and 950°C for each time duration. The morphology and microstructure of the boride layers were analyzed by scanning electron microscopy (SEM) and X ray diffraction (XRD), respectively. The mechanical properties were evaluated by an instrumented nanoindentation test. The tribological behaviors of the layers were evaluated using a sand/rubber apparatus following the ASTM G-65 standard. The friction coefficient of the boride layers was estimated by means of the tribological pin-on-disk test. The results show that the experimental parameters had a clear influence on the thickness of the boride layers and on their mechanical properties. The volume loss was established in the range of 0.0741 « 0.011 µg to 1.6148 « 0.150 µg. Wear mechanisms such as adhesion and micro-fatigue were mainly observed in the samples exposed for 6 h at 950°C. Finally, the friction coefficient was reduced from 0.7 for the as-received material down to 0.29 for the borided samples. The wear mechanisms were discussed as a function of the scanning electron microscopy observations. It is possible to conclude that single-phase layers of Fe 2 B are more apt to face wear than the FeB/Fe 2 B biphasic layers.

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“…O tratamento, em forno, deve ocorrer à temperatura de 900ºC, 950ºC ou 1000°C, durante um período de 4h, 6h ou 8h. Neste estudo o material analisado era o aço AISI1045 [12].…”

Section: Definições Das Técnicas Do Tratamento De Boretaçãounclassified

Análise dos efeitos do tratamento termoquímico de boretação, aplicado a aços comerciais de larga utilização industrial: revisão

Perini

Villanova

2019

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A intensificação dos estudos, visando o entendimento pleno das variáveis que envolvem o tratamento termoquímico de boretação é de fundamental importância para que se possa obter pleno conhecimento, dessa forma será possível implantar tal técnica em níveis de escala industrial. Apesar de se tratar de uma rica área dentro do contexto da produção científica, ainda existem muitas lacunas a serem desvendadas no que diz respeito à boretação, especialmente quanto aos agentes boretantes que podem ser utilizados no tratamento, além de temperatura e tempo adequado. Tem-se por objetivo elencar o maior número possível de dados disponíveis acerca do tema proposto, a partir de uma revisão bibliográfica atualizada, o quê evidenciará que a boretação, de fato, apresenta-se como uma solução eficaz para problemas de desgastes em componentes industriais, uma vez que pode elevar em até cinco vezes a dureza superficial do aço base em seu estado normalizado, o qual é utilizado para a fabricação dos mesmos.

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Improved fracture toughness of boride coating developed with a diffusion annealing process

Cited by 62 publications

References 16 publications

Determination of the Diffusion Coefficients of Boron in the FeB and Fe₂B Layers Formed on AISI D2 Steel

Determination of the Diffusion Coefficients of Boron in the FeB and Fe₂B Layers Formed on AISI D2 Steel

Tribological Behavior of Borided AISI 316L Steel with Reduced Friction Coefficient and Enhanced Wear Resistance

Análise dos efeitos do tratamento termoquímico de boretação, aplicado a aços comerciais de larga utilização industrial: revisão

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Improved fracture toughness of boride coating developed with a diffusion annealing process

Cited by 62 publications

References 16 publications

Determination of the Diffusion Coefficients of Boron in the FeB and Fe2B Layers Formed on AISI D2 Steel

Determination of the Diffusion Coefficients of Boron in the FeB and Fe2B Layers Formed on AISI D2 Steel

Tribological Behavior of Borided AISI 316L Steel with Reduced Friction Coefficient and Enhanced Wear Resistance

Análise dos efeitos do tratamento termoquímico de boretação, aplicado a aços comerciais de larga utilização industrial: revisão

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Determination of the Diffusion Coefficients of Boron in the FeB and Fe₂B Layers Formed on AISI D2 Steel

Determination of the Diffusion Coefficients of Boron in the FeB and Fe₂B Layers Formed on AISI D2 Steel