Probes for the ultrasonic treatment or inspection of molten aluminum
First Claim
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1. An improved probe for conducting ultrasonic mechanical energy between a transducer device and an aluminum melt;
- where said probe comprises a working tip consisting of titanium, and a coating of aluminum which has been volatilized and deposited on said working tip in a vacuum; and
said probe is further characterized in that upon the immersion of said working tip in an aluminum melt at temperatures up to about 850°
C., said working tip is wetted by molten aluminum in about one minute or less.
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Abstract
Special probes for the ultrasonic inspection or treatment of molten aluminum are described. Such probes employ a special working tip which is made essentially of titanium and is capped with a coating of aluminum by a vacuum vaporization process. Also described is a process for making such probes.
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Citations
19 Claims
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1. An improved probe for conducting ultrasonic mechanical energy between a transducer device and an aluminum melt;
- where said probe comprises a working tip consisting of titanium, and a coating of aluminum which has been volatilized and deposited on said working tip in a vacuum; and
said probe is further characterized in that upon the immersion of said working tip in an aluminum melt at temperatures up to about 850°
C., said working tip is wetted by molten aluminum in about one minute or less.
- where said probe comprises a working tip consisting of titanium, and a coating of aluminum which has been volatilized and deposited on said working tip in a vacuum; and
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2. An improved probe for conducting ultrasonic mechanical energy between a transducer device and an aluminum melt;
- where said probe comprises a working tip made essentially of titanium, and a coating of aluminum wherein said coating has been formed on said working tip by sequential steps comprising;
(a) chemical etching the surface of said working tip to clean said surface, and to remove titanium oxides and other reaction products from said surface; (b) situating said working tip in a vacuum atmosphere; (c) bombarding the surface of said working tip with ionized gas from a glow discharge to further clean said surface, and to further remove titanium oxides and other reaction products from said surface; (d) decreasing the pressure of said vacuum atmosphere; and (e) volatilizing aluminum in said vacuum atmosphere so that the volatilized aluminum is deposited on the surface of said working tip to form said coating. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10)
- where said probe comprises a working tip made essentially of titanium, and a coating of aluminum wherein said coating has been formed on said working tip by sequential steps comprising;
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11. A process of making a probe for conducting ultrasonic mechanical energy between a transducer device and an aluminum melt, where said process comprises the following sequential steps, starting with a probe working tip which is made essentially of titanium;
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(a) Chemical etching the surface of said working tip to clean said surface, and to remove titanium oxides and other reaction products from said surface; (b) Situating said working tip in a vacuum atmosphere; (c) Bombarding the surface of said working tip with ionized gas from a glow discharge to further clean said surface, and to further remove titanium oxides and other reaction products from said surface; (d) Decreasing the pressure of said vacuum atmosphere; and (e) Volatilizing aluminum in said vacuum atmosphere so that the volatilized aluminum is deposited on the surface of said working tip to form a coating thereon. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification