Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1975-03-27
1976-12-21
Hoffman, James R.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
427250, C23C 1302, B32B 1520
Patent
active
039986039
ABSTRACT:
A protective coating is provided for nickel-base and cobalt-base superalloys which is highly resistant to corrosion in a fused Na.sub.2 SO.sub.4 environment at elevated temperatures. The superalloy body is coated by physical vapor deposition with a thin layer of nickel-chromium alloy and then coated with a still thinner layer of aluminum and thereafter heat treated to strengthen the body and improve its rupture life while bonding the alloy coating to the body and diffusing the aluminum coating into the alloy coating and forming a chromium diffusion barrier in the nickel-chromium layer.
REFERENCES:
patent: 3050417 (1962-08-01), Nack et al.
patent: 3338733 (1967-08-01), Rowady
patent: 3594219 (1971-07-01), Maxwell et al.
patent: 3640815 (1972-02-01), Schwartz et al.
patent: 3652235 (1972-03-01), Manilla et al.
patent: 3676085 (1972-07-01), Evans
patent: 3846159 (1974-11-01), Bornstein et al.
Cohen Joseph T.
General Electric Company
Hoffman James R.
Squillaro Jerome C.
Turner F. Wesley
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