A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
HEAT-RESISTANT MEMBER AND MANUFACTURING METHOD THEREOF
To provide a heat-resistant member in which a surface of a base material made of isotropic graphite is coated with a carbide coating film, and which is less likely to contaminate a surface of the carbide coating film or damage the coating film, and to provide a method for manufacturing the same.SOLUTION: A heat-resistant member includes a base material made of isotropic graphite, and a carbide coating film formed on all or a part of a surface of the base material, which is made of a sintered body containing a metal carbide as a main component. A coverage of an impurity film adhered to a surface of the carbide coating film is less than 3%. An arithmetic mean roughness Ra of the carbide coating film is 1.5 μm or less. Such a heat-resistant member is obtained by applying a blasting treatment to a heat-resistant member precursor to which the impurity film is adhered to the surface of the carbide coating film, by impinging a soft medium on the surface of the carbide coating film. The medium is made of a non-metallic material with a new Mohs hardness of 4 or less and a true specific gravity of 2.5 or less.SELECTED DRAWING: Figure 1
【課題】等方性黒鉛からなる基材の表面が炭化物被膜で被覆されており、炭化物被膜表面の汚染や被膜の損傷の少ない耐熱部材、びその製造方法を提供すること。【解決手段】耐熱部材は、等方性黒鉛からなる基材と、前記基材の表面の全部又は一部に形成された、金属炭化物を主成分とする焼結体からなる炭化物被膜とを備えている。前記炭化物被膜の表面に付着している不純物膜の被覆率は、３％未満である。前記炭化物被膜の算術平均粗さＲaは、１．５μｍ以下である。このような耐熱部材は、炭化物被膜の表面に不純物膜が付着している耐熱部材前駆体に対し、炭化物被膜の表面に軟質のメディアを衝突させるブラスト処理を施すことにより得られる。メディアは、新モース硬度が４以下であり、かつ、真比重が２．５以下である非金属材料からなる。【選択図】図１
HEAT-RESISTANT MEMBER AND MANUFACTURING METHOD THEREOF
To provide a heat-resistant member in which a surface of a base material made of isotropic graphite is coated with a carbide coating film, and which is less likely to contaminate a surface of the carbide coating film or damage the coating film, and to provide a method for manufacturing the same.SOLUTION: A heat-resistant member includes a base material made of isotropic graphite, and a carbide coating film formed on all or a part of a surface of the base material, which is made of a sintered body containing a metal carbide as a main component. A coverage of an impurity film adhered to a surface of the carbide coating film is less than 3%. An arithmetic mean roughness Ra of the carbide coating film is 1.5 μm or less. Such a heat-resistant member is obtained by applying a blasting treatment to a heat-resistant member precursor to which the impurity film is adhered to the surface of the carbide coating film, by impinging a soft medium on the surface of the carbide coating film. The medium is made of a non-metallic material with a new Mohs hardness of 4 or less and a true specific gravity of 2.5 or less.SELECTED DRAWING: Figure 1
【課題】等方性黒鉛からなる基材の表面が炭化物被膜で被覆されており、炭化物被膜表面の汚染や被膜の損傷の少ない耐熱部材、びその製造方法を提供すること。【解決手段】耐熱部材は、等方性黒鉛からなる基材と、前記基材の表面の全部又は一部に形成された、金属炭化物を主成分とする焼結体からなる炭化物被膜とを備えている。前記炭化物被膜の表面に付着している不純物膜の被覆率は、３％未満である。前記炭化物被膜の算術平均粗さＲaは、１．５μｍ以下である。このような耐熱部材は、炭化物被膜の表面に不純物膜が付着している耐熱部材前駆体に対し、炭化物被膜の表面に軟質のメディアを衝突させるブラスト処理を施すことにより得られる。メディアは、新モース硬度が４以下であり、かつ、真比重が２．５以下である非金属材料からなる。【選択図】図１
HEAT-RESISTANT MEMBER AND MANUFACTURING METHOD THEREOF
耐熱部材及びその製造方法
NAKAMURA DAISUKE (author)
2021-09-16
Patent
Electronic Resource
Japanese
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