CR.sub.2 O.sub.3 -protective coating and process for its manufac

Details CR.sub.2 O.sub.3 -protective coating and process for its manufac CR.sub.2 O.sub.3 -protective coating and process for its manufac

1989-05-22

1990-02-06

Beck, Shrive

Stock material or miscellaneous articles

Composite

Of metal

428702, 427 34, B05D 108

Patent

active

048987859

ABSTRACT:
The Cr.sub.2 O.sub.3 protective coating (3) is applied, during the vacuum spray process, as a leakproof coating to a support (1), and has a density of not more than 5.3 g/cm.sup.3, a residual porosity of less than 2%, a Vickers hardness (HV) of over 2000 kp/mmm.sup.2 and an electric strength of at least 5 V/.mu.m of protective thickness; it is particularly suited as a protective coating on supports (3) exposed to corrosion and simultaneously subjected to high mechanical loads.

REFERENCES:
patent: 2964420 (1960-12-01), Poorman et al.
patent: 3640757 (1972-02-01), Grubba
patent: 3839618 (1974-10-01), Muehlberger
patent: 4006340 (1977-02-01), Gorinas
patent: 4313975 (1982-02-01), Mairy
patent: 4370391 (1983-01-01), Mori et al.
patent: 4396661 (1983-08-01), George et al.
patent: 4577431 (1986-03-01), Siemers
patent: 4596718 (1986-06-01), Gruner
Coating for High Temperature Applications, Lang, 1983, ELSEVIER Science Pub. Co., Inc., New York, N.Y., pp. 128-135.

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