Microstructural development and mechanical properties of hot pressed SiC reinforced TiB2 based composite

Namini, Abbas Sabahi; Gogani, Seyed Nima Seyed; Asl, Mehdi Shahedi; Farhadi, Kiumars; Kakroudi, Mahdi Ghassemi; Mohammadzadeh, Ahad

doi:10.1016/j.ijrmhm.2015.03.014

Cited by 132 publications

(13 citation statements)

References 42 publications

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“…The most likely explanation for justifying the presence of observed surface voids is that a certain amount of small TiB2 grains was removed during the polishing step. The latter statement is in agreement with the motivation recently provided by Sabahi Namini et al ( 2015) [67] to explain the presence of pores on the surface of highly dense SiC-reinforced TiB2 samples produced by hot-pressing.…”

Section: Sintering Optimization and Microstructure Of Dense Samplessupporting

confidence: 93%

Titanium diboride ceramics for solar thermal absorbers

Sani

Meucci

Mercatelli

et al. 2017

Solar Energy Materials and Solar Cells

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Titanium diboride (TiB2) is a low-density refractory material belonging to the family of ultra-high temperature ceramics (UHTCs). This paper reports on the production and microstructural and optical characterization of nearly fully dense TiB2, with particular interest to its potential utilization as novel thermal solar absorber. Monolithic bulk samples are produced starting from elemental reactants by a two-step method consisting of the Self-propagating High-temperature Synthesis (SHS) followed by the Spark Plasma Sintering (SPS) of the resulting powders. The surface of obtained samples has-been characterized from the microstructural and topological points of view. The hemispherical reflectance spectrum has been measured from 0.3 to 15 µm wavelength, to evaluate the potential of this material as solar absorber for future concentrating solar plants

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Section: Sintering Optimization and Microstructure Of Dense Samplessupporting

confidence: 93%

Titanium diboride ceramics for solar thermal absorbers

Sani

Meucci

Mercatelli

et al. 2017

Solar Energy Materials and Solar Cells

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“…120 Other than pure TiB 2 material and TiB 2 coatings, TiB 2 -based composites have been studied extensively at the laboratory and pilot scale. Namini et al 121 investigated the mechanical properties of TiB 2 -SiC composite with different SiC compositions between 15 to 30 wt%. The relative density of the TiB 2 -SiC composite increased with SiC concentration, while the porosity of the specimen was zero when SiC concentration in the cathode was 30 wt%.…”

Section: Tib 2 Based Cathodesmentioning

confidence: 99%

Review—Primary Production of Aluminium with Oxygen Evolving Anodes

Padamata

Singh

Haarberg

et al. 2023

J. Electrochem. Soc.

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Due to environmental and economic concerns, carbon-free aluminium production has been an ultimate goal for aluminium industries. For the past few decades, a considerable amount of research has been conducted to find an inert anode material that could replace the consumable carbon anodes for aluminium electrolysis. Anodic materials such as metals, ceramics, and cermets have been studied extensively. All these anode materials have their advantages and disadvantages. However, metal alloys have proven effective because of their resistance to high-temperature corrosion and their ability to produce a protective oxide layer. For a successful adaptation of metallic anodes into the aluminium electrolysis cell, an electrolyte with a low operating temperature and high alumina solubility with good electrical conductivity is required. A wettable cathode with a shorter anode-to-cathode distance is preferred to compete with the Hall-Héroult process in terms of energy requirements. This review discusses the research progress on inert anodes, wettable cathodes, and electrolytes.

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“…EDS analysis of the elements on the surface of the B 4 C-SiC-TiB 2 ceramic composites shows a dark continuous phase of B 4 C, with little or no elemental content of Mg and Al, which are enriched at the triple grain junctions of the specimen. SiC and TiB 2 are the main added phases in the composites, the sintering temperatures (SiC: 1600-1800 • C, 34,35 TiB 2 : 1500-1900 • C [36][37][38] ) of the two compounds are relatively low compared to B 4 C. Thus, the grains of SiC and TiB 2 have started to grow under the sintering conditions at 1900 • C, resulting in larger SiC particles and TiB 2 particles observed in the BSE images on the surface of the specimens (Figure 16).…”

Section: 23mentioning

confidence: 99%

Microstructures and mechanical properties of B₄C–SiC and B₄C–SiC–TiB₂ ceramic composites fabricated by hot pressing

et al. 2023

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Boron carbide (B4C) ceramic composites with excellent mechanical properties were fabricated by hot‐pressing using B4C, silicon carbide (SiC), titanium boride (TiB2), and magnesium aluminum silicate (MAS) as raw materials. The influences of SiC and TiB2 content on the microstructural evolution and mechanical properties of the composites were systematically investigated. The mechanism by which MAS promotes the sintering process of composites was also investigated. MAS exists in composites in the form of amorphous phase. It can effectively remove the oxide layer from the surface of ceramic particles during the high temperature sintering process. The typical values of relative density, hardness, bending strength, and fracture toughness of B4C–SiC–TiB2 composites are 99.6%, 32.61 GPa, 434 MPa, and 6.20 MPa m1/2, respectively. Based on the microstructure observations and finite element modeling, the operative toughening mechanism is mainly attributed to the crack deflection along the grain boundary, which results from the residual stress field generated by the thermal expansion mismatch between B4C and TiB2 phase.

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Microstructural development and mechanical properties of hot pressed SiC reinforced TiB2 based composite

Cited by 132 publications

References 42 publications

Titanium diboride ceramics for solar thermal absorbers

Titanium diboride ceramics for solar thermal absorbers

Review—Primary Production of Aluminium with Oxygen Evolving Anodes

Microstructures and mechanical properties of B₄C–SiC and B₄C–SiC–TiB₂ ceramic composites fabricated by hot pressing

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Microstructural development and mechanical properties of hot pressed SiC reinforced TiB2 based composite

Cited by 132 publications

References 42 publications

Titanium diboride ceramics for solar thermal absorbers

Titanium diboride ceramics for solar thermal absorbers

Review—Primary Production of Aluminium with Oxygen Evolving Anodes

Microstructures and mechanical properties of B4C–SiC and B4C–SiC–TiB2 ceramic composites fabricated by hot pressing

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Product

Resources

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Microstructures and mechanical properties of B₄C–SiC and B₄C–SiC–TiB₂ ceramic composites fabricated by hot pressing