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Title:
LONG-LASTING ANTIBACTERIAL METALLIC SURFACES AND METHODS FOR THEIR PRODUCTION
Document Type and Number:
WIPO Patent Application WO/2014/006390
Kind Code:
A3
Abstract:
A method of modifying a surface characteristic of a stainless steel or cobalt-chromium (Co- Cr) based alloy article, comprising plasma surface co-alloying the article (such as by active screen plasma surface co-alloying), with both interstitial and substitutional alloying elements at a temperature in the range of from 300 to 600°C and at a pressure of from 100 to 1500 Pa for 1 to 50 hours in an atmosphere comprising N-containing, C-containing or N/C-containing gas.

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Inventors:
DONG HANSHAN (GB)
LI XIAOYING (GB)
DONG YANGCHUN (GB)
Application Number:
PCT/GB2013/051745
Publication Date:
July 17, 2014
Filing Date:
July 02, 2013
Export Citation:
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Assignee:
UNIV BIRMINGHAM (GB)
International Classes:
B22F3/11; C23C4/00; C23C8/00; C23C12/02; C23C14/00
Foreign References:
US20050241736A12005-11-03
Other References:
DONG Y ET AL: "Surface microstructure and antibacterial property of an active-screen plasma alloyed austenitic stainless steel surface with Cu and N; Surface microstructure and antibacterial property of an active-screen plasma alloyed austenitic stainless steel surface", BIOMEDICAL MATERIALS, INSTITUTE OF PHYSICS PUBLISHING, BRISTOL, GB, vol. 5, no. 5, 1 October 2010 (2010-10-01), pages 54105, XP020184949, ISSN: 1748-605X, DOI: 10.1088/1748-6041/5/5/054105
YANGCHUN DONG ET AL: "The generation of wear-resistant antimicrobial stainless steel surfaces by active screen plasma alloying with N and nanocrystalline Ag", JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B: APPLIED BIOMATERIALS, vol. 9999B, 1 January 2010 (2010-01-01), pages NA - NA, XP055101754, ISSN: 1552-4973, DOI: 10.1002/jbm.b.31573
Attorney, Agent or Firm:
WITHERS & ROGERS LLP et al. (London SE1 2AU, GB)
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