A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Spark plug
A spark plug according to one embodiment of the present invention includes an insulator formed of an alumina-based sintered body, wherein the insulator contains 90 wt % or more of an aluminum component in terms of oxide, and wherein crystal grains of the insulator has an average grain size of 1.5 mm or smaller and a grain size standard deviation of 1.2 μm or smaller.
Spark plug
A spark plug according to one embodiment of the present invention includes an insulator formed of an alumina-based sintered body, wherein the insulator contains 90 wt % or more of an aluminum component in terms of oxide, and wherein crystal grains of the insulator has an average grain size of 1.5 mm or smaller and a grain size standard deviation of 1.2 μm or smaller.
Spark plug
YOKOYAMA YUTAKA (author) / ARAKI NOBUYOSHI (author) / TANAKA KUNIHARU (author) / YOSHIDA HARUKI (author) / UEGAKI HIRONORI (author) / KON TOSHIKI (author) / NOMURA YUSUKE (author)
2021-11-23
Patent
Electronic Resource
English