Ngk Spark Plug Company, Limited

Wakako Kinose

Masamichi Ito

Takuma Nomura

Katsumi Sakamoto

Yutaka Kawamura

A solid coating film () is formed on a surface of a screw member () of a temperature sensor (), serving as an internal combustion engine attachment component, by use of a lubricating coating composition containing, as solid ingredients for forming the coating film (), an organosilicon polymer having a polycarbosilane skeleton cross-linked by a metallic element, and a solid lubricant composed of at least one member selected from among molybdenum disulfide, boron nitride, graphite, and mica, and an organic solvent serving as the solvent for the solid ingredients. By virtue of the coating film (), high seizure resistance can be attained.

Lubricating coating composition and attachment component for internal combustion engine

A temperature sensor () is configured such that a ring pressure section () is fixed to a ring seat face () by screwing a fixing member () into a screw attachment member () in a state in which the ring pressure section () is seated on the ring seat face (), and pressing a front-end facing surface () of the fixing member () against a rear-end facing surface () of the ring pressure section (). A dry film () containing an organic silicon polymer having a polycarbosilane skeleton that is cross-linked by a metal element and a solid lubricant such as molybdenum disulfide and mica is provided on at least one of the front-end facing surface () of the fixing member () and the rear-end facing surface () of the ring pressure section ().

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Nagoya, Japan

Wakako Kinose