Details: Category: Molybdenum knowledge; Published on 29 August 2013; Hits: 522

1. An electrical resistance element of the molybdenum silicide type for heating to a high temperature, said element comprising: two terminals for the supply of electric current, and at least one leg formed from a molybdenum silicide-type material which extends between the terminals and which includes a glow zone, wherein the glow zone has a plurality of heating regions each of predetermined length and having different diameters along different heating regions of the at least one leg, wherein each heating region of the glow zone is of constant cross-sectional area.

2. A resistance element according to claim 1, wherein the element has two legs and only one curved part that extends between the legs.

3. A resistance element according to claim 1, wherein the element has at least three legs and at least two curved parts that extend between respective legs.

4. A resistance element according to claim 1, wherein the element has at least one leg, wherein at least one part of at least one leg defines an angle relative to a plane in which the terminals lie.

5. A resistance element according to claim 1, wherein the diameters of glow zone sections are smaller the further away from the terminals the respective glow zone heating regions are located.

6. A resistance element according to claim 1, wherein the glow zone heating regions include regions having different diameters, wherein the diameters of said heating regions are smaller the nearer said heating regions are to the terminals.

7. A resistance element according to claim 1, wherein the glow zone has different constant diameter heating regions along its length, wherein the heating region diameters alternate in magnitude between larger diameter heating regions and smaller diameter heating regions that each define respective individual heating regions.

8. A resistance element according to claim 1, wherein the element includes a plurality of laterally spaced, interconnected, substantially parallel legs, wherein ends of adjacent legs are interconnected by respective curved regions to define a continuous element between the terminals.

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Molybdenum silicide type element