Method of making a heating element of molybdenum silicide type

Details Method of making a heating element of molybdenum silicide type Method of making a heating element of molybdenum silicide type

2006-04-25

2006-04-25

Hoang, Tu (Department: 3742)

Electric heating

Heating devices

With heating unit structure

Reexamination Certificate

active

07034260

ABSTRACT:
A method of producing a heating element made from molybdenum silicide and alloys thereof, and which includes aluminum oxide on its surface. A material is produced that contains substantially Mo(Si1-xAlx)2and Al2O3by mixing a mixture of a silicon and molybdenum compound with an aluminum compound. Either of the silicon and molybdenum compounds include Mo(Si1-yAly)2and are mixed with one or both of an aluminum compound in the form of Al2O3or Al(OH)3and optionally the compounds SiO2, Si, and MoO3, or by virtue of the mixture of the silicon and molybdenum compound containing MoO3and Al and Si and/or SiO2. The input components together have a degree of purity corresponding to at least 98%. The mixture reacts exothermically and/or by being sintered, so that exchange reactions take place to form the compounds Mo(Si1-xAlx)2and Al2O3, where x lies in the range of 0.4–0.6.

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