Pore Formation Process of Porous Ti3SiC2 Fabricated by Reactive Sintering

Zhang, Huibin; Liu, Xinli; Jiang, Yao

doi:10.3390/ma10020163

Cited by 12 publications

(3 citation statements)

References 24 publications

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“…The content of these morphologies was affected by the W content. In recent years, MAX phase materials (where M is an early transition metal, A is a group IIIA or IVA element, and X is carbon or nitrogen) are often selected as the reinforced phases of the metal matrix of contact materials because of their excellent metal and ceramic properties [8,9,10,11,12,13,14,15]. In particular, Ti 3 Al(Si)C 2 has excellent thermal conductivity, low electrical resistivity ((2.87–3.45) × 10 −7 Ω·m), and a low friction coefficient.…”

Section: Introductionmentioning

confidence: 99%

Erosion Behavior of a Cu-Ti3AlC2 Cathode by Multi-Electric Arc

Huang

Feng

et al. 2019

Materials

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A Cu-Ti3AlC2 cathode was eroded by arc discharging at 10 kV. The cross-sectional and horizontal morphologies of the eroded surface were recorded by a field emission scanning electron microscope (FE-SEM). The energy dispersive X-ray spectroscopy (EDS) and Raman spectrometry were carried out to analyze the compositions. The color-eroded surface was obtained by a three-dimensional laser scanning confocal microscope (3D LSCM). After 100 times of arc erosion, the Cu-Ti3AlC2 melted and resolidified. An eroded layer about 10 μm thick was formed, covered with pits, protrusions, and pores. The breakdown current was kept between 37 to 43 A. Under the action of a high temperature arc, Cu-Ti3AlC2 was oxidized to CuO and TiO2, accompanying the evaporation of the Al element.

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Section: Introductionmentioning

confidence: 99%

Erosion Behavior of a Cu-Ti3AlC2 Cathode by Multi-Electric Arc

Huang

Feng

et al. 2019

Materials

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“…This approach is generally suitable only for ceramic materials, due to the high oxidation states of the metals, Al 3+ and Ca 2+ in this case. However, such a reactive sintering employing metals at a high oxidation state allowed also the formation of non-oxide ceramics, like Ti 3 SiC 2 from TiH 2 , with H 2 , Si and graphite foaming agent donor [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of FeAl Intermetallic Foams by Tartaric Acid-Assisted Self-Propagating High-Temperature Synthesis

2018

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Iron aluminides are intermetallics with interesting applications in porous form thanks to their mechanical and corrosion resistance properties. However, making porous forms of these materials is not easy due to their high melting points. We formed FeAl foams by elemental iron and aluminum powders sintering with tartaric acid additive. Tartaric acid worked as an in situ gas-releasing agent during the self-propagating high-temperature synthesis of FeAl intermetallic alloy, which was confirmed by X-ray diffraction measurements. The porosity of the formed foams was up to 36 ± 4%. In the core of the sample, the average equivalent circle diameter was found to be 47 ± 20 µm, while on the surface, it was 35 ± 16 µm; thus, the spread of the pore size was smaller than reported previously. To investigate functional applications of the formed FeAl foam, the pressure drop of air during penetration of the foam was examined. It was found that increased porosity of the material increased the flow of the air through the metallic foam.

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“…TH 2 was used as raw material to prevent the oxidation of Ti at room temperature. Since TiH 2 was decomposed between 500 and 700 ºC [13,14], no residual H was found in the joint after sintering in vacuum. And TiH 2 is one of the intermediate products in the production of Ti powder.…”

Section: Introductionmentioning

confidence: 99%

Joining SiC Ceramics with Ti3SiC2/TixCy Multi-Interlayer by Spark Plasma Sintering

Wang

Liu

Yang

et al. 2018

SSP

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Spark plasma sintering (SPS) is a promising method to obtain robust silicon carbide (SiC) joint at a relatively low temperature within a short time. In this work, the joint of SiC ceramics was prepared with TiH2, Si and C mixture powders by SPS from 1150 to 1450 °C for 10 min. The microstructure of SiC joints was observed by scanning electron microscopy (SEM), and the phase composition of the interlayer was determined by x-ray diffraction (XRD) and energy dispersive spectrometer (EDS). The mechanical properties of SiC joints were evaluated by the single lap shear test. The results showed that the microstructure and phase composition of the joints depended on the joining temperature. A dense joint could be obtained above 1250 °C. Ti3SiC2 and TixCy were found in all joints. Also, the decomposition of Ti3SiC2 occurred in the 1450 °C joint. The highest shear strength of 80.5 ± 7.4 MPa was obtained in the 1350 °C joint. The fracture occurred within the joining interlayer and SiC ceramics during shear test, except for the 1150 °C joint, which existed obvious cavities in the joint.

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Pore Formation Process of Porous Ti3SiC2 Fabricated by Reactive Sintering

Cited by 12 publications

References 24 publications

Erosion Behavior of a Cu-Ti3AlC2 Cathode by Multi-Electric Arc

Erosion Behavior of a Cu-Ti3AlC2 Cathode by Multi-Electric Arc

Fabrication of FeAl Intermetallic Foams by Tartaric Acid-Assisted Self-Propagating High-Temperature Synthesis

Joining SiC Ceramics with Ti<sub>3</sub>SiC<sub>2</sub>/Ti<sub>x</sub>C<sub>y</sub> Multi-Interlayer by Spark Plasma Sintering

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