Mitsubishi Materials Corporation

Kabushiki Kaisha Nihon Micronics

Mitsuhiro Abe

Eiji Nakamura

Eichi Osato

Kazuhiro Kawano

Yoshihito Goto

A surface coated cutting tool includes a tool substrate; and a hard coating layer on the tool substrate. The hard coating layer includes, in sequence from the tool substrate toward a surface of the tool, a titanium carbonitride inner layer, a titanium nitride lower intermediate layer, a titanium carbonitride upper intermediate layer, a titanium oxycarbonitride bonding auxiliary layer, and an aluminum oxide outer layer. Titanium nitride grain boundaries in the lower intermediate layer and titanium carbonitride grain boundaries in the upper intermediate layer are continuous from titanium carbonitride grain boundaries in the inner layer. The texture coefficient TC(422) of titanium carbonitride in the inner layer and the upper intermediate layer is 3.0 or more, and the texture coefficient TC(0 0 12) of α-aluminum oxide in the outer layer is 5.0 or more.

Surface-coated cutting tool

An embodiment of an electrical connecting apparatus comprises an electrical insulating plate, an elastic plate made of an electrical insulating material arranged on the electrical insulating plate, a sheet-like conductive plate arranged on the elastic plate, and first and second contacts. The conductive plate comprises a hole area having at least one first hole portion allowing the probe tip portion of the first contact to abut to the conductive plate and a plurality of second hole portions not allowing the probe tip portions of the second contacts to abut thereon regardless of whether or not overdriving acts on the contacts.

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Tokyo, Japan

Mitsuhiro Abe