Metal based resistance heating element and method for preparation therefor
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United States of America Patent
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Dec 19, 2006
Grant Date -
Dec 29, 2005
app pub date -
Jun 30, 2003
filing date -
Jul 1, 2002
priority date (Note) -
Expired
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Abstract
Discloses is a metal-based resistance heat-generation element. The element comprises a core made of a platinum group metal or refractory metal, and a coating film formed on the core. The coating film has at least two layers including a core-side inner layer of a Re--Cr based .sigma. (sigma) phase and a surface-side outermost layer of an aluminide or silicide. Alternatively, the element may comprise a core made of an alloy containing a platinum group metal or refractory metal and Re and Cr diffused therein, and a coating film formed on the core. The coating film has at least one layer including an aluminide or silicide layer.
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