Microwave Sintering of Advanced Composites Materials: A Review

Singhal, Chirag; Murtaza, Qasim; Parvej,

doi:10.1016/j.matpr.2018.10.224

Cited by 28 publications

(2 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…e microwave-sintered samples have smaller grain size and more uniform size distribution and thus have better performance. Here, it is noted that similar results have been reported in TiC [14], Li 2 TiO 3 ceramic [27], Li 2 TiO 3 -Li 4 SiO 4 biphasic ceramic pebbles [28], and other metallic and ceramic materials [23,24].…”

Section: Resultssupporting

confidence: 86%

“…erefore, small grain size can be obtained at lower sintering temperatures for samples that have been treated by the microwave presintering process, due to the fact that, in the cementation stage, the removal of organic remains is done from the inside out, whereas, in the conventional sintering method, there is an induction process that produces defects during evaporation. is problem can be overcome by the microwave presintering process because the microwave sintering process allows the internal structure of the samples to absorb microwave energy uniformly, which generates a positive temperature gradient that is more effective for eliminating organic remains [23,24]. Guided by the simulation results, the most uniform electromagnetic field distribution and the most ideal microwave absorption location are found.…”

Section: Resultsmentioning

confidence: 96%

See 1 more Smart Citation

Effects of Simulation‐Guided Microwave Presintering Process on the Preparation and Final Properties of Pure Ceramic Rings: Lower Sintering Temperature and Higher Mechanical Properties

Xiao

Zhou

Zhao

et al. 2020

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

In order to improve the performance and endurance of steel rings used for twisting and winding yarns in the textile industry, a more wear-resistant ceramic version is studied and examined by conducting multiple simulations combined with microwave sintering experiments of the ring preparation process, aiming to reduce manufacturing costs and improve efficiency. The three-dimensional (3D) electromagnetic field simulation software HFSS is used to simulate the electromagnetic field distribution in the microwave sintering cavity and to determine the electromagnetic region with the most uniform electromagnetic field to guide the microwave sintering experiments. The 3Y-TZP ceramic rings are shaped by gel-casting. The effect of presintering on the performance of ceramic rings is investigated by applying conventional sintering and microwave sintering methods. The experimental results show that the simulation-guided microwave sintering process can resolve the deficiency of uneven microwave sintering at low temperatures. Comparing the final sintering temperatures and mechanical properties of the final ceramic-sintered rings obtained by microwave presintering to those obtained by conventional presintering, microwave presintered sample has a final temperature of 1400°C, which is 100°C lower than that of conventional presintering, which is 1500°C; its average grain size of 0.18 μm is dramatically smaller than that of conventional presintering, which is 0.24 μm, with about 80% of the grain sizes present in the range of 0.1-0.2 μm and a relative density of about 99%, as opposed to conventional presintering’s 70% falling between 0.2 and 0.3 μm and relative density of about 98%; the Vickers hardness and fracture toughness for microwave presintered sample reach 1550 kg·f·mm−2 and 9.05 MPa m1/2, respectively, which are both greater than 1431 kg·f·mm−2 and 8.86 MPa m1/2 in the conventional samples.

show abstract