Title:
METHOD FOR ANTIOXIDIZING TREATMENT OF CARBON-FIBER REINFORCED CARBON MATERIAL
Document Type and Number:
Japanese Patent JP3193762
Kind Code:
B2
Abstract:
PURPOSE: To provide a method for antioxidizing treatment of a carbon-fiber reinforced carbon material in which a coating layer capable of withstanding severe dynamic oxidizing conditions can be formed on the surface of the carbon- fiber reinforced carbon material.
CONSTITUTION: The objective method is composed of an inner-layer coating step for bringing the substrate surface of a carbon-fiber reinforced carbon material into contact with SiO2 gas and forming an SiC coating layer by a conversion method, an intermediate coating step for coating the surface with an aqueous slurry containing granular molybdenum disilicide and an organic binder, then heating the coated substrate at a high temperature of 2050°C in argon, fusing the granular molybdenum disilicide, diffusing the MoSi2 into the SiC coating structure in the inner layer and forming a composite film of the SiC- MoSi2 and an outer-layer coating step for coating the substrate with the aqueous slurry, then heating the coated substrate at 1500°C temperature in argon and forming a porous MoSi2 film. If an SiO2 glass film is formed as the outermost layer coating, antioxidizing performance can further be improved.
Inventors:
Toshiya Setaka
Application Number:
JP6905792A
Publication Date:
July 30, 2001
Filing Date:
February 17, 1992
Export Citation:
Assignee:
Tokai Carbon Co., Ltd.
International Classes:
C04B35/83; C04B41/52; C04B41/89; (IPC1-7): C04B41/89; C04B35/83
Attorney, Agent or Firm:
Fukuda Yasuo (1 person outside)