TY - JOUR
T1 - Microwave heating behavior in SiC Fiber-MO2 mixtures (M = Ce, Zr)-selective heating of micrometer-sized fibers facilitated by ZrO2 Powder
AU - Kashimura, Keiichiro
AU - Fukushima, Jun
AU - Namioka, Tomoaki
AU - Fujii, Takashi
AU - Takizawa, Hirotsugu
AU - Fukushima, Hideoki
N1 - Funding Information:
Funding: This work was supported by the Research Institute for Sustainable Human sphere, Kyoto University (project: Adam, Mission Research), by Chubu University (Sokoken Project), by Fukui University, and by a JSPS Grant-in-Aid for Scientific Research (S) No. JP17H06156.
Funding Information:
This work was supported by the Research Institute for Sustainable Human sphere, Kyoto University (project: Adam, Mission Research), by Chubu University (Sokoken Project), by Fukui University, and by a JSPS Grant-in-Aid for Scientific Research (S) No. JP17H06156. K.K. is very grateful to M. Sato for helpful advice and discussions.
Publisher Copyright:
© 2019 by the authors.
PY - 2020/1/1
Y1 - 2020/1/1
N2 - SiC fiber-MO2 (M= Ce, Zr) mixtures with various compositions were heated by applying an 80 W microwave electric field, to investigate their heating rate, maximum temperature, and dielectric constant. For the SiC fiber-CeO2 mixture, all three parameters continued to increase as the weight ratio of the SiC fiber increased; in contrast, for the SiC fiber-ZrO2 mixture, these parameters reached a maximum value at a certain composition. A thermal gradient of 500 °C was observed at a microlevel in the SiC fiber-ZrO2 mixture, and hot spots were located in regions with a certain composition. This result not only contributes to designing a novel good microwave absorber but also presents new aspects with regard to high-temperature microwave processing, including the mechanism behind the high-temperature gradients on the order of micrometers as well as engineering applications that utilize these high-temperature gradients.
AB - SiC fiber-MO2 (M= Ce, Zr) mixtures with various compositions were heated by applying an 80 W microwave electric field, to investigate their heating rate, maximum temperature, and dielectric constant. For the SiC fiber-CeO2 mixture, all three parameters continued to increase as the weight ratio of the SiC fiber increased; in contrast, for the SiC fiber-ZrO2 mixture, these parameters reached a maximum value at a certain composition. A thermal gradient of 500 °C was observed at a microlevel in the SiC fiber-ZrO2 mixture, and hot spots were located in regions with a certain composition. This result not only contributes to designing a novel good microwave absorber but also presents new aspects with regard to high-temperature microwave processing, including the mechanism behind the high-temperature gradients on the order of micrometers as well as engineering applications that utilize these high-temperature gradients.
KW - Anomalous heating behavior
KW - Microwave heating
KW - Selective heating
KW - Silicon carbide fibers
KW - ZrO
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U2 - 10.3390/pr8010047
DO - 10.3390/pr8010047
M3 - Article
AN - SCOPUS:85079047568
VL - 8
JO - Processes
JF - Processes
SN - 2227-9717
IS - 1
M1 - 47
ER -