Erosion-oxidation behavior of thermal sprayed Ni20Cr alloy and WC and Cr3C2 cermet coatings



Document title: Erosion-oxidation behavior of thermal sprayed Ni20Cr alloy and WC and Cr3C2 cermet coatings
Journal: Materials research
Database: PERIÓDICA
System number: 000312865
ISSN: 1516-1439
Authors: 1

Institutions: 1Comissao Nacional de Energia Nuclear, Instituto de Pesquisas Energeticas e Nucleares, Sao Paulo. Brasil
Year:
Season: Abr-Jun
Volumen: 8
Number: 2
Pages: 125-129
Country: Brasil
Language: Inglés
Document type: Nota breve o noticia
Approach: Experimental
English abstract An apparatus to conduct high temperature erosion-oxidation studies up to 850 °C and with particle impact velocities up to 15 m.s-1 was designed and constructed in the Corrosion Laboratories of IPEN. The erosion-oxidation behavior of high velocity oxy fuel (HVOF) sprayed alloy and cermet coatings of Ni20Cr, WC 20Cr7Ni and Cr3C2 Ni20Cr on a steel substrate has been studied. Details of this apparatus and the erosion-oxidation behavior of these coatings are presented and discussed. The erosion-oxidation behavior of HVOF coated Cr3C2 25(Ni20Cr) was better than that of WC 20Cr7Ni, and the erosion-oxidation regimes have been identified for these coatings at particle impact velocity of 3.5 m.s-1, impact angle of 90° and temperatures in the range 500 to 850 °C
Disciplines: Ingeniería
Keyword: Ingeniería mecánica,
Ingeniería metalúrgica,
Acero,
Revestimientos,
Oxidación,
Erosión,
Corrosión,
Alta temperatura,
Propiedades mecánicas
Keyword: Engineering,
Mechanical engineering,
Metallurgical engineering,
Steel,
Coatings,
Oxidation,
Erosion,
Corrosion,
High temperature,
Mechanical properties
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