OXIDE FILM REMOVING METHOD
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Apr 27, 2016
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May 8, 2015
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An oxide film removing method is a method of removing an oxide film formed in a surface of a superalloy part that contains a first metal as a base metal and a second metal different from the first metal. The oxide film removing method includes arranging the superalloy part inside a heating chamber; reducing the oxide of the base metal to the base metal by heating the inside of the heating chamber in a condition that a reduction gas atmosphere or a vacuum atmosphere is maintained; and carrying out acid processing to apply acid solution to the superalloy part after the reduction. The oxide film formed in the surface of the superalloy is removed effectively without using a highly toxic gaseous fluoride.
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