Mechanically isotropic alumina prepared by spark plasma sintering: The role of pyrolytic carbon and multilayer graphene

Fan, Xiaohui; Ni, Na; Wang, Xin M.; Hao, Wei; Guo, Fangwei; Zhao, Xiaofeng

doi:10.1016/j.jeurceramsoc.2021.01.056

Cited by 3 publications

(1 citation statement)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Spark plasma sintering (SPS) offers a solution to this issue. Discharge plasma sintering is characterized by rapid temperature elevation during sintering, low sintering temperatures, and brief sintering durations [25]. These features effectively suppress the growth of primary silicon and eutectic matrix grains during sintering, leading to grain refinement and rapid solidification structure maintenance [26].…”

Section: Introductionmentioning

confidence: 99%

Effect of Spark Plasma Sintering Temperature on the Microstructure and Thermophysical Properties of High-Silicon–Aluminum Composites

Kong,

Wang,

et al. 2024

Coatings

View full text Add to dashboard Cite

Spark plasma sintering is a process of rapid, low-temperature, and high-density sintering. Moreover, traditional sintering methods can solve the problems of large grain sizes and low densities. The sintering temperature plays a crucial role in influencing the physical properties of high-silicon–aluminum (Si-Al) composites. This work investigated the impact of temperature on the microstructure, interface, and physical properties of high-Si-Al composites by spark plasma sintering. The results demonstrate that when the powder was processed by ball milling at a sintering temperature of 565 °C, the material exhibited the densest microstructure with minimal pore formation. The average size of the silicon phase is the smallest. The material’s thermal conductivity is 134.6 W/m·K, the thermal expansion coefficient is 8.55 × 10−6 K−1, the Brinell hardness is 219 HBW, the density is 2.415 g/cm3, and the density reaches 97.75%. An appropriate sintering temperature facilitates particle rearrangement and dissolution–precipitation processes, enhancing the material structure and performance.

show abstract

Section: Introductionmentioning

confidence: 99%