HARD CARBON FILM-COATED MATERIAL AND ITS PRODUCTION

Title:

HARD CARBON FILM-COATED MATERIAL AND ITS PRODUCTION

Document Type and Number:

Japanese Patent JPH0499286

Kind Code:

A

Abstract:

PURPOSE: To improve wear resistance, corrosion resistance and lubricating property by forming a boronization layer on the surface of an iron-base material and further forming a hard carbon film thereon.

CONSTITUTION: A boronization layer is formed on the surface of an iron-base material such as SS41, S25C, S45C, S55C, SUJ, SKS, SKD, SCM, and FCD steels. Then, a hard carbon film is formed on the boronization layer. Thereby, a hard carbon film-coated material is obtained by coating an iron-base material with a hard carbon film having high adhesion strength. This material is suitable for parts of automobile, aircraft, spacecraft, ship and industrial machine, and moreover, suitable for such use requiring wear resistance, corrosion resistance, high hardness, lubricating property and nonviscosity, such as tools and dies.

Inventors:

OKADA MORIHIRO
KONO TAKUMI
SATO MAKI

Application Number:

JP21084590A

Publication Date:

March 31, 1992

Filing Date:

August 08, 1990

Export Citation:

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Assignee:

NIPPON STEEL CORP
NIPPON STEEL CHEMICAL CO

International Classes:

C23C8/42; C23C14/02; C23C14/06; C23C14/32; C23C28/04; (IPC1-7): C23C8/42; C23C14/02; C23C14/06; C23C14/32; C23C28/04

Attorney, Agent or Firm:

Kazuo Ozeki

Next Patent: STEEL EXCELLENT IN CORROSION RESISTANCE AGAINST SOIL