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Title:
IRON BASED ALLOY SUITABLE FOR PROVIDING A HARD AND CORROSION RESISTANT COATING ON A SUBSTRATE, ARTICLE HAVING A HARD AND CORROSION RESISTANT COATING, AND METHOD FOR ITS MANUFACTURE
Document Type and Number:
WIPO Patent Application WO/2018/232618
Kind Code:
A1
Abstract:
An iron-based alloy that is able to provide a coating on a substrate, the coating having high hardness, corrosion resistance and bonding strength to the substrate. The iron-based alloy consists of (by weight) 16.00 -20.00 % Cr; 0.20 -2.00 % B; 0.20 -4.00 %Ni; 0.10 -0.35 % C; 0.10 -4.00 %Mo; optionally 1.50 % or less Si, 1.00 % or less Mn, 3.90 % or less Nb, 3.90 % or less V,3.90 % or less W and 3.90 % or less Ti; the balance being Fe and unavoidable impurities; with the proviso that the total amount of Mo, Nb, V, W and Ti is in the range of 0.1 -4.0 % by weight of the alloy. It further relates to an article comprising a substrate and coating formed thereon, the coating being formed from the alloy, and to a method for forming a coated article. The method preferably employs HVOF, HVAF, cold spraying, plasma spraying, laser cladding or plasma transferred arc cladding.

Inventors:
CAO CECILIA (CN)
ZHU CHRIS (CN)
ZHANG BRUC (CN)
LIU CRYSTAL (CN)
HALLÉN HANS (CN)
Application Number:
PCT/CN2017/089326
Publication Date:
December 27, 2018
Filing Date:
June 21, 2017
Export Citation:
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Assignee:
HOEGANAES AB (SE)
HOEGANAES CHINA CO LTD (CN)
International Classes:
C22C38/54; B22F1/00; C23C24/10
Foreign References:
CN104846364A2015-08-19
CN102619477A2012-08-01
EP2066823A12009-06-10
JPS61119657A1986-06-06
CN104846364A2015-08-19
Other References:
See also references of EP 3642377A4
Attorney, Agent or Firm:
NTD PATENT AND TRADEMARK AGENCY LIMITED (CN)
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