REFRACTORY METAL CORE COATINGS

A refractory metal core for use in a casting system has a coating for providing oxidation resistance during shell fire and protection against reaction/dissolution during casting. In a first embodiment, the coating comprises at least one oxide and a silicon containing material. In a second embodiment...

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Bibliographische Detailangaben
Hauptverfasser:	SNYDER, JACOB, SHAH, DILIP M, BOSE, SUDHANGSHU, SEETHARAMAN, VENKAT, GUPTA, DINESH, PERSKY, JOSHUA, MURRAY, STEPHEN D, BALES, DANIEL A, COTNOIR, GLENN, SANTELER, KEITH, BEALS, JAMES T, PAULONIS, DANIEL FRANCIS, VERNER, CARL, WIEDEMER, JOHN, MARCIN, JOHN J
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CASTING FOUNDRY MOULDING PERFORMING OPERATIONS POWDER METALLURGY TRANSPORTING
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	A refractory metal core for use in a casting system has a coating for providing oxidation resistance during shell fire and protection against reaction/dissolution during casting. In a first embodiment, the coating comprises at least one oxide and a silicon containing material. In a second embodiment, the coating comprises an oxide selected from the group consisting of calcia, magnesia, alumina, zirconia, chromic, yttria , silica, hafnia, and mixtures thereof. In a third embodiment, the coating comprises a nitride selected from the group consisting of silicon nitride, sialon, titanium nitride, and mixtures thereof. Other coating embodiments are described in the disclosure.