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Title: : Protective
coatings for ferritic steels
The problem the
inventor(s) wanted to solve: The
protective coatings are in quest in order to increase the oxidation
resistance of the steels.
Description: The adhesion of sputtered FeAlCrSi
coatings to the X6Cr17 SS steel substrate is greater than that of thermally
or plasma sprayed MeAlCrY coatings. According to
the invention at the conditions of thermal cycling between 323K ÷ 1173 K
reactively magnetron sputtered SiC coating ensures
still better protection of the same X6Cr17 SS steel against oxidation in
comparison with the MeCrAlY one.
Presentation: It is the technology of preparing the
protective coatings.
Fields of application:
Ferritic stainless
steels are largely used in household goods, automotive industry, water
heaters, nuclear fusion reactors and in solid oxide
fuel cells.
Advantages: In
accordance with the invention magnetron sputtered amorphous FeAlCrSi coatings ensure better protection against
isothermal oxidation of X6Cr17 SS steel at the temperature 1173 K than
actually used MeAlCrY coatings (where Me=Fe or Ni
or Co) at much lower coating thickness, much lower substrate temperature and
at lower cost..
Stage of
development: text only, design
Documentation
available: (X) No ( ) Yes
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