Selective laser melting of TiB2-Ti composite with high content of ceramic phase

Liu, Le; Minasyan, Tatevik; Ivanov, Roman; Aydinyan, Sofiya; Hussainova, Irina

doi:10.1016/j.ceramint.2020.05.189

Cited by 39 publications

(13 citation statements)

References 25 publications

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“…Two C-type tungsten-rhenium thermocouples (wire diameter 0.1 mm) preliminarily covered with a thin layer of boron nitride were positioned at holes drilled in the green body to record temperature-time profiles of the combustion process. Subsequently, the SHSed samples were crashed by a roller, then treated by disintegrator milling to make fine “pomegranate-like” powders, as detailed in [ 8 ]. The “pomegranate-like” powder represents the collection of composite particles with a relatively low size distribution and of the same flowability.…”

Section: Methodsmentioning

confidence: 99%

“…In situ formation of TiB during the reaction between Ti and TiB 2 has drawn considerable interest and is widely studied [ 3 , 8 ]. The Gibbs free energy for the reaction (i.e., Ti + TiB 2 → 2TiB) is a negative one (ΔG ~ −154 kJ/mol) demonstrating thermodynamical instability of TiB 2 and Ti and, therefore, a high potential to form a more stable TiB [ 8 ]. At elevated temperatures and oxidative environment, Ti–TiB composites are suspected for the development of a dense rutile dominated oxides with a strong interfacial cohesion over the composites preventing the materials from severe oxidation and brittle fracture of sub-surface tribo-layers [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

“…Titanium monoboride (TiB) is one of the most used additives for Ti matrix to yield improvement in mechanical as well as tribological properties due to Ti and TiB thermodynamic and chemical stability, similar density (4.5 g/cm 3 for Ti and 4.56 g/cm 3 for TiB), close values of coefficient of thermal expansion (8.2 × 10 −6 • C −1 for Ti and 6.2 × 10 −6 • C −1 for TiB), ability to retain protective tribo-oxide layer formed at elevated temperatures, and no spurious interfacial phase formation [1,7]. In situ formation of TiB during the reaction between Ti and TiB 2 has drawn considerable interest and is widely studied [3,8]. The Gibbs free energy for the reaction (i.e., Ti + TiB 2 → 2TiB) is a negative one (∆G~−154 kJ/mol) demonstrating thermodynamical instability of TiB 2 and Ti and, therefore, a high potential to form a more stable TiB [8].…”

Section: Introductionmentioning

confidence: 99%

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Hot Sliding Wear of 88 wt.% TiB–Ti Composite from SHS Produced Powders

et al. 2021

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Titanium alloys and composites are of great interest for a wide variety of industrial applications; however, most of them suffer from poor tribological performance, especially at elevated temperatures. In this study, spark plasma sintering was utilized to produce a fully dense and thermodynamically stable TiB–Ti composite with a high content of ceramic phase (88 wt.%) from self-propagating high temperature synthesized (SHS) powders of commercially available Ti and B. Microstructural examination, thermodynamic assessments, and XRD analysis revealed the in situ formation of titanium borides with a relatively broad grain size distribution and elongated shapes of different aspect ratio. The composite exhibits a considerable hardness of 1550 HV30 combined with a good indentation fracture toughness of 8.2 MPa·m1/2. Dry sliding wear tests were performed at room and elevated temperature (800 ℃) under 5 and 20 N sliding loads with the sliding speed of 0.1 m·s−1 and the sliding distance of 1000 m. A considerable decline in the coefficient of friction and wear rate was demonstrated at elevated temperature sliding. Apart from the protective nature of generated tribo-oxide layer, the development of lubricious boric acid on the surface of the composite was wholly responsible for this phenomenon. A high load bearing capacity of tribo-layer was demonstrated at 800 ℃ test.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hot Sliding Wear of 88 wt.% TiB–Ti Composite from SHS Produced Powders

et al. 2021

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“…The thermal stress encountered due to the temperature gradient can lead to a balling effect, unwanted pores, and defect formation [ 49 , 50 ]. The cracking can be minimized by decreasing the layer thickness, so that the staircase effect in the scaffold can be reduced [ 51 ]. From a manufacturing point of view, bone mimicking is a challenging procedure as scaffold topologies require particular attention to specific features of the process and materials.…”

Section: Powder Bed Fusion Of Ceramicsmentioning

confidence: 99%

Bioactive Ceramic Scaffolds for Bone Tissue Engineering by Powder Bed Selective Laser Processing: A Review

2021

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The implementation of a powder bed selective laser processing (PBSLP) technique for bioactive ceramics, including selective laser sintering and melting (SLM/SLS), a laser powder bed fusion (L-PBF) approach is far more challenging when compared to its metallic and polymeric counterparts for the fabrication of biomedical materials. Direct PBSLP can offer binder-free fabrication of bioactive scaffolds without involving postprocessing techniques. This review explicitly focuses on the PBSLP technique for bioactive ceramics and encompasses a detailed overview of the PBSLP process and the general requirements and properties of the bioactive scaffolds for bone tissue growth. The bioactive ceramics enclosing calcium phosphate (CaP) and calcium silicates (CS) and their respective composite scaffolds processed through PBSLP are also extensively discussed. This review paper also categorizes the bone regeneration strategies of the bioactive scaffolds processed through PBSLP with the various modes of functionalization through the incorporation of drugs, stem cells, and growth factors to ameliorate critical-sized bone defects based on the fracture site length for personalized medicine.

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“…2. Ti-6Al-4V 50/50 [18] In recent years, the geological conditions of the exploitation of mineral, oil, and natural gas deposits have become more difficult. The filler materials and surfacing technologies currently used in most drilling applications do not sufficiently protect the steel body of the PDC drill bit; therefore, research was undertaken to develop a next-generation composite (MMC), dedicated to plasma surfacing that effectively protects the working surface of the PDC steel drill body against abrasive wear, erosion, high temperatures, and impact loading [9,10].…”

Section: Introductionmentioning

confidence: 99%

Matrix Composite Coatings Deposited on AISI 4715 Steel by Powder Plasma-Transferred Arc Welding. Part 3. Comparison of the Brittle Fracture Resistance of Wear-Resistant Composite Layers Surfaced Using the PPTAW Method

Czupryński

Żuk

2021

Materials

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This article is the last of a series of publications included in the MDPI special edition entitled “Innovative Technologies and Materials for the Production of Mechanical, Thermal and Corrosion Wear-Resistant Surface Layers and Coatings”. Powder plasma-transferred arc welding (PPTAW) was used to surface metal matrix composite (MMC) layers using a mixture of cobalt (Co3) and nickel (Ni3) alloy powders. These powders contained different proportions and types of hard reinforcing phases in the form of ceramic carbides (TiC and WC-W2C), titanium diboride (TiB2), and of tungsten-coated synthetic polycrystalline diamond (PD-W). The resistance of the composite layers to cracking under the influence of dynamic loading was determined using Charpy hammer impact tests. The results showed that the various interactions between the ceramic particles and the metal matrix significantly affected the formation process and porosity of the composite surfacing welds on the AISI 4715 low-alloy structural steel substrate. They also affected the distribution and proportion of reinforcing-phase particles in the matrix. The size, shape, and type of the ceramic reinforcement particles and the surfacing weld density significantly impacted the brittleness of the padded MMC layer. The fracture toughness increased upon decreasing the particle size of the hard reinforcing phase in the nickel alloy matrix and upon increasing the composite density. The calculated mean critical stress intensity factor KIc of the steel samples with deposited layers of cobalt alloy reinforced with TiC and PD-W particles was 4.3 MPa⋅m12 higher than that of the nickel alloy reinforced with TiC and WC-W2C particles.

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Selective laser melting of TiB2-Ti composite with high content of ceramic phase

Cited by 39 publications

References 25 publications

Hot Sliding Wear of 88 wt.% TiB–Ti Composite from SHS Produced Powders

Hot Sliding Wear of 88 wt.% TiB–Ti Composite from SHS Produced Powders

Bioactive Ceramic Scaffolds for Bone Tissue Engineering by Powder Bed Selective Laser Processing: A Review

Matrix Composite Coatings Deposited on AISI 4715 Steel by Powder Plasma-Transferred Arc Welding. Part 3. Comparison of the Brittle Fracture Resistance of Wear-Resistant Composite Layers Surfaced Using the PPTAW Method

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