Stock material or miscellaneous articles – Hollow or container type article – Glass – ceramic – or sintered – fused – fired – or calcined metal...
Patent
1991-12-27
1995-04-25
Robinson, Ellis P.
Stock material or miscellaneous articles
Hollow or container type article
Glass, ceramic, or sintered, fused, fired, or calcined metal...
428 346, 428469, 428472, 4284721, 4284722, 428586, 428689, 428697, 428701, 428702, 138174, 138177, 165177, 165180, B32B 1504
Patent
active
054097487
ABSTRACT:
A heat radiating tube for an annealing furnace is disclosed. An aluminide layer and an aluminum diffusion sublayer are formed by an aluminum diffusion coating method on one side or both sides of the tube portions which are subjected during use to high temperature oxidation corrosion. Subsequently, a coating of MCrAlY is applied on selected inside portions exposed to the combustion gas flame collision in order to reinforce the bonding strength of the protective coating. A layer of ceramic is then coated thereupon. Prior to applying the MCrAlY and ceramic coatings, the tube surface to be coated is ground to a depth equal to the coating thicknesses in order to make the heights of the coated layer and the surface of the remaining portions of the tube even each other.
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Research And Development Of High Temperature Materials For Industry, Elsevier Applied Science, 1989.
Song Jin W.
Sung Byong K.
Whang Soon Y.
Pohang Iron & Steel Co. Ltd.
Research Institute of Industrial Science & Technology
Robinson Ellis P.
Speer Timothy M.
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