HIGHLY CORROSION-RESISTANT MEMBER AND MANUFACTURING PROCESS FOR THE SAME
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Accused Products
Abstract
A highly corrosion-resistant member that is equipped with: a substrate made of stainless steel; an intermediate layer coated on at least a part of a surface of the substrate; and an amorphous carbon film coated on at least a part of a surface of the intermediate layer is completed by forming the intermediate layer and amorphous carbon film at such a low temperature that a temperature of the surface of the substrate is 450° C. or less. Another highly corrosion-resistant member that is equipped with: a substrate made of stainless steel, substrate whose superficial-layer portion is subjected to nitriding treatment; and an amorphous carbon film coated on at least a part of a surface of the superficial-layer portion is completed by carrying out the nitriding treatment and a formation of the amorphous carbon film at such a low temperature that a temperature of a surface of said substrate is 450° C. or less.
In the aforementioned highly corrosion-resistant members, the surface of the substrate that is made of stainless steel is not exposed to high temperatures (>450° C.). Consequently, the corrosion resistance of the substrate is kept equivalent to the corrosion resistance of the original stainless steel that has not been exposed to any high temperature.
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Citations
43 Claims
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1-17. -17. (canceled)
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18. A highly corrosion-resistant member equipped with:
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a substrate made of stainless steel; an intermediate layer coated on at least a part of a surface of the substrate; and an amorphous carbon film coated on at least a part of a surface of the intermediate layer; wherein said intermediate layer, and said amorphous carbon film are formed at such a low temperature that a temperature of the surface of said substrate is 450°
C. or less. - View Dependent Claims (19, 20, 21, 22, 23)
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24. A highly corrosion-resistant member equipped with:
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a substrate made of stainless steel, substrate whose superficial-layer portion is subjected to nitriding treatment; and an amorphous carbon film coated on at least a part of a surface of the superficial-layer portion;
whereinsaid nitriding treatment, and a formation of said amorphous carbon film are carried out at such a low temperature that a temperature of a surface of said substrate is 450°
C. or less. - View Dependent Claims (25, 26, 27, 28)
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29. A manufacturing process for highly corrosion-resistant member, the manufacturing process comprising:
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an intermediate-layer forming step of setting a temperature of a surface of a substrate made of stainless steel to 450°
C. or less and forming an intermediate layer onto at least a part of the surface of the substrate; andan amorphous-carbon-film forming step of setting the temperature of the surface of said substrate to 450°
C. or less and forming an amorphous carbon film onto at least a part of a surface of said intermediate layer. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36)
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37. A manufacturing process for highly corrosion-resistant member, the manufacturing process comprising:
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a low-temperature nitriding-treatment step of setting a temperature of a surface of a substrate made of stainless steel to 450°
C. or less and subjecting a superficial-layer portion of the substrate to nitriding treatment; andan amorphous-carbon-film forming step of setting the temperature of the surface of said substrate to 450°
C. or less and forming an amorphous carbon film onto at least a part of a surface of said superficial-layer portion that has been subjected to the nitriding treatment. - View Dependent Claims (38, 39, 40, 41, 42, 43)
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Specification