HEAT RESISTANT ALLOY HAVING OXIDATION RESISTANCE

PROBLEM TO BE SOLVED: To provide a heat resistant alloy which has excellent oxidation resistance and used at high temperature. SOLUTION: The heat resistant alloy having the oxidation resistance is composed of, by mass, 0.5 to 40% Mo, 5 to 45% Cr and 0.5 to 15% Pd, and the balance W. According to the...

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Hauptverfasser:	DOI YOSHINORI, ABE NOBUO, DEGAWA YOSHIO, IMAI YASUSUKE, MURAYAMA YUUKI, HIGASHIMINE HISAYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY TREATMENT OF ALLOYS OR NON-FERROUS METALS
Online-Zugang:	Volltext bestellen
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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a heat resistant alloy which has excellent oxidation resistance and used at high temperature. SOLUTION: The heat resistant alloy having the oxidation resistance is composed of, by mass, 0.5 to 40% Mo, 5 to 45% Cr and 0.5 to 15% Pd, and the balance W. According to the heat resistant alloy, since a dense chromium oxide film is formed on the surface even when being used in high temperature atmosphere for a long period of time, inner diffusion of oxygen is cut off, the oxidative consumption of W and Mo can be suppressed, and the mass change rate of the heat resistant alloy is reduced as well. Further, the relative density of the heat resistant alloy is low, or even when the segregation of Cr is present in the heat resistant alloy, the effect is not damaged. COPYRIGHT: (C)2011,JPO&INPIT