Porous coating for enhanced tubes

Details Porous coating for enhanced tubes Porous coating for enhanced tubes

1986-07-02

1988-06-28

Lazarus, Ira S.

Stock material or miscellaneous articles

All metal or with adjacent metals

Workpiece with longitudinal passageway or stopweld material

165133, 165907, 427 34, 427336, 427352, B21F 2300, F28F 1318, F28F 1902, B05D 300

Patent

active

047538490

ABSTRACT:
A porous coated enhanced evaporator tube and a method for producing the tube. The porous coating of the tube is applied by arc spraying two dissimilar metals on a tube and then etching the tube so that only one of the metals is etched out, and a porous surface, having voids where the etched out metal is developed. The voids form subsurface channels which provide nucleate boiling sites.

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patent: 4381818 (1983-05-01), Sarhar et al.
patent: 4526839 (1985-07-01), Herman et al.
patent: 4663243 (1987-05-01), Czikk et al.
patent: 4696855 (1987-09-01), Pettit, Jr. et al.

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