Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1987-11-10
1988-05-24
Pianalto, Bernard D.
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
427 38, 427124, 4271263, 4271264, B05D 306
Patent
active
047465344
ABSTRACT:
A protective sheath for a temperature sensing device for use in determining the temperature of molten metals. The temperature sensing device, such as a thermocouple, is encased in a molybdenum tube which is coated with successive porous layers of molybdenum, a plurality of layers of Al.sub.2 O.sub.3 -Cr.sub.2 O.sub.3 -Mo in a decreasing concentration of Mo in proceeding from the inner to the outer layers, and a layer of substantially pure Al.sub.2 O.sub.3 -Cr.sub.2 O.sub.3. The Al.sub.2 O.sub.3 -Cr.sub.2 O.sub.3 layer may be covered with an outer coating of a material, such as boron nitride, to protect the Al.sub.2 O.sub.3 -Cr.sub.2 O.sub.3 layer from attack by slag. Alternating layers of Al.sub.2 O.sub.3 -Cr.sub.2 O.sub.3 and boron nitride may be applied as outermost sacrificial layers.
REFERENCES:
patent: 2303704 (1942-12-01), Oseland
patent: 2843646 (1958-07-01), Conant
patent: 3061482 (1962-10-01), Grant
patent: 3106493 (1963-10-01), Japka
patent: 3148981 (1964-09-01), Ryshkewitch
patent: 3250125 (1966-05-01), Bonn
patent: 3379578 (1968-04-01), McTaggart et al.
patent: 3505101 (1970-04-01), Koffskey, Jr. et al.
patent: 3530716 (1970-09-01), Truppe et al.
patent: 3537911 (1970-11-01), Hynd
patent: 3647560 (1972-03-01), Truppe et al.
patent: 3652068 (1972-03-01), Truppe et al.
patent: 3975165 (1976-08-01), Elbert et al.
patent: 4060095 (1977-11-01), Kurita
patent: 4135538 (1979-01-01), Kurita
patent: 4141743 (1979-02-01), Grubba
patent: 4216028 (1980-08-01), Kurita
Phillippi et al, "Design of a Fluidic Copillary Pyrometer for Contact Duty at Temperatures to 2750.degree., 1982, Temperature Its Measurement & Control, vol. 5, pp. 1345-1351.
Negas et al, "Fabrication, Testing and Evaluation of Prototype Fluidic Copillary Pyrometer Systems", Journal of Dynamic Systems, Measurement and Control, Dec. 1981, vol. 103, pp. 309-315.
Bush James R.
Drzewiecki Tadeusz M.
Ellis Richard T.
Greenspan David C.
Negas Taki
Pianalto Bernard D.
System Planning Corporation
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