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US 6,222,166 B1Granted
Aluminum substrate thick film heater
AssigneeWatlow Electric Manufacturing Company
InventorsHongy Lin, Thomas Laskowski
Life of this patent
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Abstract
Thick film resistive element heater with an aluminum substrate having a ceramic oxide dielectric insulator there between.
Claims19
A resistive heater comprising:
- a metal substrate having a CTE greater than 16×10E−16/° C.;
- a dielectric layer comprised entirely of ceramic oxide, said dielectric layer bonded on said substrate;
- and
- a thick film resistive heating element layer bonded over said dielectric layer, with the dielectric layer separating said substrate and said element layer.
1 more element
A resistive element heater comprising:
- a substrate of metal with a CTE greater than 16×10E−16/° C. having a roughened surface created by roughening a surface of a piece of metal stock having a CTE greater than 16×10E−16/° C.;
- a dielectric layer comprised entirely of ceramic oxide deposited on the roughened substrate by thermal bonding;
- and
- a resistive layer deposited on the dielectric layer by printing a noble metal paste containing an organic binder and solvent over said dielectric layer.
1 more element
Dependencies are inferred from the claim text.