Effects of in situ synthesized mullite whisker on mechanical properties of Al2O3–SiC composite by microwave sintering

Dang, Xudan; Wei, Meng; Fan, Bingbing; Guan, Keke; Zhang, Rui; Long, Weimin; Zhang, Hongsong

doi:10.1088/2053-1591/aa742a

Cited by 6 publications

(3 citation statements)

References 29 publications

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“…The cross sectional area of the thick deposit and fractography of the tensile fracture surfaces were analyzed with SEM respectively. Engineering public-domain software dubbed ImageJ ® was used to estimate the retention of particulates and confirmation done by rule of mixture (equation 1) and thermal expansion calculations [22,23].…”

Section: Microstructural Characterizationmentioning

confidence: 99%

Cold Sprayed Additive Manufacturing of SiC/Al Metal Matrix Composite: Synthesis, Microstructure, Heat Treatment and Tensile Properties

Gyansah

Tariq

Tang

et al. 2018

MSF

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In this study, cold spray technique was used as a solid-state additive manufacturing route to deposit a 5 mm thick SiC /Al metal matrix composite. Microstructure and tensile properties were analyzed via different heat treatment conditions (200 oC, 300 oC, 400 oC and 500 oC). Microstructure evolutions were characterized via scanning electron microscopy, X-ray diffraction (XRD) and energy-disperse X-ray spectroscopy (EDS), whilst mechanical properties were investigated via micro-tensile and hardness tests. It was established that the as-sprayed deposit fractured in a brittle manner and had appreciable tensile strength (85 MPa) mainly associated with intensive work hardening effect. At heat treatment conditions, tensile strength (104 MPa) and plasticity (1.5 %-5.2 %) were enhanced due to coarsening of pure Al splat through recrystallization-recovery-grain growth mechanisms. The splat size which controls strength changes from 30.9 ± 2.6 μm to 40.9 ± 4.8 μm, an appreciation of 32 % as heat treatment temperature increased. The main fracture mode at the heat treatment state was a ductile fracture. For plastically deformed splats, the flattening ratios (FR) revealed the top (1.5), middle (1.9) and near interfacial regions (2.2) due to peening effect of SiC particles. The Young moduli were in agreement with the experimental results.

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Section: Microstructural Characterizationmentioning

confidence: 99%

Cold Sprayed Additive Manufacturing of SiC/Al Metal Matrix Composite: Synthesis, Microstructure, Heat Treatment and Tensile Properties

Gyansah

Tariq

Tang

et al. 2018

MSF

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“…The result showed that the formation of the microstructure enhanced the mechanical properties. Dang [18] prepared mullite using Al 2 O 3 powders and coated SiO 2 @SiC powders. The mechanical properties were better than without whisker.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Performance of Al2O3/Ti(C,N)-Added ZrO2 Whisker and NanoCoated CaF2@Al(OH)3 Powder

Xiao

Chen

et al. 2020

Applied Sciences

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The Al2O3/Ti(C,N) ceramic material added micron ZrO2 whisker and nano coated CaF2@Al(OH)3 powder was fabricated. The micron ZrO2 whisker was for the toughening and reinforcing phase and the nano coated CaF2@Al(OH)3 powder was the lubricant. For obtaining a ceramic material with optimal comprehensive mechanical properties and friction properties, the influences of different compositions of the ZrO2 whisker and nano coated CaF2@Al(OH)3 powder on the microstructure and mechanical properties were analyzed, respectively. The result demonstrated that as the addition of the ZrO2 whisker was 6 vol% and the addition of the nano coated CaF2@Al(OH)3 powder was 10 vol%, the optimal self-lubricating ceramic material had optimal mechanical properties. The hardness of the ceramic material was 16.72 GPa, the flexural strength was 520 MPa and the fracture toughness reached 7.16 MPa·m1/2. The formation of the intragranular structure, whisker toughening and the phase transition of ZrO2 were the main mechanisms.

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“…This deficiency inevitably leads to a decline in total conductivity [22][23][24][25]. However, some works reported in the literature have demonstrated the superiority of microwave sintering compared to other techniques [26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study of Conventional and Microwave Sintering of BaCe1 − xGdxO3 − δ Ceramic

Borges

Gonçalves

Correa

et al. 2017

J Inorg Organomet Polym

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Effects of in situ synthesized mullite whisker on mechanical properties of Al₂O₃–SiC composite by microwave sintering

Cited by 6 publications

References 29 publications

Cold Sprayed Additive Manufacturing of SiC/Al Metal Matrix Composite: Synthesis, Microstructure, Heat Treatment and Tensile Properties

Cold Sprayed Additive Manufacturing of SiC/Al Metal Matrix Composite: Synthesis, Microstructure, Heat Treatment and Tensile Properties

Preparation and Performance of Al2O3/Ti(C,N)-Added ZrO2 Whisker and NanoCoated CaF2@Al(OH)3 Powder

A Comparative Study of Conventional and Microwave Sintering of BaCe1 − xGdxO3 − δ Ceramic

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