Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1987-07-06
1990-01-30
Pianalto, Bernard
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
427128, 427129, 427130, 427132, 427191, 427197, 427282, 427283, 427423, 427427, B05D 100, B05D 512
Patent
active
048972835
ABSTRACT:
A highly aligned rare-earth transition metal alloy magnet material such as samarium-cobalt (SmCo.sub.5). The high degree of alignment is evidenced by an isolated X-ray diffraction pattern peak for Cu.sub.k.alpha. radiation at a interplane "d" spacing of 2.0 A.degree. and is produced by very high temperature deposition of the material on a hot surface. The surface temperature is maintained well above 800 degrees centigrade and most preferably is initially set at approximately 1020 degrees centigrade or higher at which temperature the isolated diffraction pattern peak dominates. A higher temperature typically occurs during deposition. Deposition of the material on the surface typically takes place by application of the material as a fine, homogeneously sized powder to the plasma flame of a plasma torch. The surface may be preheated by the application of the plasma flame to the surface without the application of the powdered material. A feedback controlled auxiliary heat source may also be used to facilitate maintaining the temperature of the surface at the very high temperature level.
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Das Dilip K.
Kumar Kaplesh
Pianalto Bernard
The Charles Stark Draper Laboratory Inc.
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