Microstructural characterization and wear resistance of boride-reinforced steel coatings produced by Selective Laser Melting (SLM)

Freitas, Brenda Juliet Martins; Oliveira, Vinicius Antonio de; Gargarella, Piter; Koga, Guilherme Yuuki; Bolfarini, Claudemiro

doi:10.1016/j.surfcoat.2021.127779

Cited by 19 publications

(4 citation statements)

References 58 publications

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“…Hardness and corrosion resistance increased with treatment time and temperature. Freitas et al [116] used the SLM process to apply only a boride-reinforced thick coating on a low-carbon steel substrate. Wear was significantly reduced by the coating, but friction remained at a similar level.…”

Section: Selective Laser Melting (Slm)mentioning

confidence: 99%

Surface Properties and Tribological Behavior of Additively Manufactured Components: A Systematic Review

et al. 2023

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Innovative additive manufacturing processes for resilient and sustainable production will become even more important in the upcoming years. Due to the targeted and flexible use of materials, additive manufacturing allows for conserving resources and lightweight design enabling energy-efficient systems. While additive manufacturing processes were used in the past several decades mainly for high-priced individualized components and prototypes, the focus is now increasingly shifting to near-net-shape series production and the production of spare parts, whereby surface properties and the tribological behavior of the manufactured parts is becoming more and more important. Therefore, the present review provides a comprehensive overview of research in tribology to date in the field of additively manufactured components. Basic research still remains the main focus of the analyzed 165 papers. However, due to the potential of additive manufacturing processes in the area of individualized components, a certain trend toward medical technology applications can be identified for the moment. Regarding materials, the focus of previous studies has been on metals, with stainless steel and titanium alloys being the most frequently investigated materials. On the processing side, powder bed processes are mainly used. Based on the present literature research, the expected future trends in the field of tribology of additively manufactured components can be identified. In addition to further basic research, these include, above all, aspects of process optimization, function integration, coating, and post-treatment of the surfaces.

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Section: Selective Laser Melting (Slm)mentioning

confidence: 99%

Surface Properties and Tribological Behavior of Additively Manufactured Components: A Systematic Review

et al. 2023

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“…3,5,7 Group IV-V transition metal carbides and borides, such as HfC, ZrC, TaC, TiC, HfB 2 , ZrB 2 , and TiB 2 , offer the highest melting temperatures (ranging from ∼3100 • C to ∼3900 • C), making them potential materials of choice for cutting tools, thermal protection, and high-temperature tribological and nuclear power applications. [8][9][10][11][12][13][14][15] However, due to their extremely high melting temperatures, sintering of pure transition metal carbide and boride ceramics is challenging as these materials display strong covalent bonds and low self-diffusion coefficients, both of which hinder densification. 5,9 To overcome this challenge, external pressure is typically applied at high temperatures in order to reduce porosity and increase points of contact between adjacent particles, thereby achieving near-theoretical density.…”

Section: Introductionmentioning

confidence: 99%

“…UHTCs typically consist of refractory ceramics, primarily carbides, borides, and oxides, owing to their high melting temperature, chemical resistance, and mechanical properties 3,5,7 . Group IV–V transition metal carbides and borides, such as HfC, ZrC, TaC, TiC, HfB 2 , ZrB 2 , and TiB 2 , offer the highest melting temperatures (ranging from ∼3100°C to ∼3900°C), making them potential materials of choice for cutting tools, thermal protection, and high‐temperature tribological and nuclear power applications 8–15 . However, due to their extremely high melting temperatures, sintering of pure transition metal carbide and boride ceramics is challenging as these materials display strong covalent bonds and low self‐diffusion coefficients, both of which hinder densification 5,9 .…”

Section: Introductionmentioning

confidence: 99%

High‐temperature ablation of hot‐pressed HfC–SiC ceramics

Kolek,

Cooper,

Behler

et al. 2023

Int J Applied Ceramic Tech

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Effective thermal insulation materials rely on the fabrication of dense, ultra‐high‐temperature ceramics that can withstand harsh environments. Hafnium carbide‐based ceramics are one of the leading materials that have the potential to perform relatively well in high‐temperature oxidizing environments under mechanical loading due to their thermal and mechanical stability. In this study, we explore the effects of processing conditions to create dense, ablation‐resistant HfC–SiC composites with a fixed composition of HfC–20 wt.% SiC using a hot‐pressing method. Sintering pressure, temperature, and time were varied and the material's relative density, phase composition, morphology, microstructure, and hardness were investigated. Composite ceramics with 99% relative density relative to a theoretical value were created by hot pressing at 2100°C for 1 h at 50 MPa and displayed a fine microstructure with an average grain size of ∼5 µm and a Vickers hardness of 22.9 ± .8 GPa. The mass loss was determined using an oxyacetylene torch with cross‐section investigations of oxide surface formations and subsurface microstructural changes. These HfC–SiC samples developed a 410 nm hafnium oxide layer on the surface upon torch exposure and had an average calculated recession rate of .028 µm/s.

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“…One of the effective solutions to this problem can be the formation of a composite structure, which implies the presence in the hardened layer, along with high-strength boride phases, of additional phases, as a rule, with lower hardness. The isolation of such phases increases the overall plasticity of the layer, and the resulting borides ensure its wear resistance [10][11][12]. RESEARCH Currently, there are various high-energy methods for the surface layer modification process.…”

Section: Introductionmentioning

confidence: 99%

Structure and Properties of Boride Coatings Obtained by the Plasma-Arc Method

Van Vinh,

Van Trieu,

Evgenievich Balanovskiy

et al. 2023

Tribol. Ind.

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An important problem of modern materials science is to increase the strength and wear resistance of tools and various machine parts. Boriding is one of the promising methods for increasing the surface hardness and wear resistance, resistance to oxidation and corrosion of machine building parts. In this work, boride coatings were obtained using plasma doping technology. It has been established that with an increase in current strength from 120 A to 160 A, the microstructure changes from hypereutectic to hypoeutectic. The maximum hardness was recorded on the sample surface with a current of 120 A and is 1519 HV. After the sliding friction test, it was noted that the boride coating at a current of 120 A has the highest wear resistance.

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Microstructural characterization and wear resistance of boride-reinforced steel coatings produced by Selective Laser Melting (SLM)

Cited by 19 publications

References 58 publications

Surface Properties and Tribological Behavior of Additively Manufactured Components: A Systematic Review

Surface Properties and Tribological Behavior of Additively Manufactured Components: A Systematic Review

High‐temperature ablation of hot‐pressed HfC–SiC ceramics

Structure and Properties of Boride Coatings Obtained by the Plasma-Arc Method

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