Title: Processes for protecting refractory metallic components against corrosion

Abstract: In the process of forming a coating selected from nickel and cobalt-based atings on a surface of a component made of a metallic material having a total composition by weight comprising at least 50% of metal selected from the group consisting of iron, cobalt and nickel, the improvement comprising forming at least one layer of an alloy of boron with one of nickel, cobalt and nickel/cobalt on the component, after which the boron is eliminated.

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Inventors: Galmiche, Philippe M. (Clamart, FR)
Lepetit, Pierre J. (Saint-Vrain, FR)

Application Number: 594802
Filing Date: 1975-07-10
Publication_date: 1977-10-25
Assignee: Office National d'Etudes et de Recherches Aerospatiales (O.N.E.R.A.) (Chatillon-sous-Bagneux, FR)
Primary Class(es): 428/652 148/243, 148/279, 148/527, 148/530, 427/226, 427/252, 427/343, 427/377, 427/405, 427/437, 427/438, 428/661, 428/678, 438/554
Other Classes:
US Patent Ref:

3000755	Sep, 1961	Hanink et al.	427/383.
3163553	Dec, 1964	Commanday et al.	427/383.
3432338	Mar, 1969	Sickles	427/437.
3553003	Jan, 1971	Carlton et al.	428/379.
3562000	Feb, 1971	Parker	427/383.
3589927	Jun, 1971	Holker	427/377.
3728149	Apr, 1973	Forand et al.	427/377.
3917464	Nov, 1975	Pearlstein et al.	427/438.
3922396	Nov, 1975	Speirs et al.	427/250.
3929427	Dec, 1975	Kotval et al.	428/457.

Other Refs: 644,472

Aug, 1964	FR

Primary Examiner: Smith, Ronald H.
Assistant Examiner: Bell, Janyce A.
Attorney: Larson, Taylor and Hinds