TY - GEN
T1 - Building of protective coating against corrosion by flame spraying of mechanofused composite particles
AU - Molina-Diaz, A.
AU - Delgado-Venegas, J.
AU - Juárez-López, F.
AU - Velázquez-Garcia, G.
AU - Cuenca-Álvarez, R.
N1 - Publisher Copyright:
© 2015 Material Reserch Society.
PY - 2016
Y1 - 2016
N2 - A protective coating was built and assessed in order to reduce the degradation of metallic substrates caused by corrosion damage. Hence, a set of coatings with different configurations, in terms of layer arrangement, was produced by flame-spraying of composite powder (A1S1 316L stainless steel coated with an a-Alumina layer) onto an AISI 1018 steel substrate. In order to ensure a homogeneous dispersion of phases, a correlation was established between the operating parameters of thermal spraying (roughness and surface temperature of substrate, spraying distance, passing speed) and the splat formation. Then, corrosion damage caused in the coated samples by exposure to a salt spray was monitored through weight measurements and observations with optical and scanning electron microscopy. The results show that corrosion still remains in all cases; however, it proceeds at lower rates for coatings made with composite particles plus an a-Alumina layer. The weight loss due to corrosion damage was reduced in approximately 94% as compared with the substrate without protection. Coating adhesion was also improved by an increased substrate roughness, with no need for an intermediate layer.
AB - A protective coating was built and assessed in order to reduce the degradation of metallic substrates caused by corrosion damage. Hence, a set of coatings with different configurations, in terms of layer arrangement, was produced by flame-spraying of composite powder (A1S1 316L stainless steel coated with an a-Alumina layer) onto an AISI 1018 steel substrate. In order to ensure a homogeneous dispersion of phases, a correlation was established between the operating parameters of thermal spraying (roughness and surface temperature of substrate, spraying distance, passing speed) and the splat formation. Then, corrosion damage caused in the coated samples by exposure to a salt spray was monitored through weight measurements and observations with optical and scanning electron microscopy. The results show that corrosion still remains in all cases; however, it proceeds at lower rates for coatings made with composite particles plus an a-Alumina layer. The weight loss due to corrosion damage was reduced in approximately 94% as compared with the substrate without protection. Coating adhesion was also improved by an increased substrate roughness, with no need for an intermediate layer.
UR - http://www.scopus.com/inward/record.url?scp=84994571028&partnerID=8YFLogxK
U2 - 10.1557/opl.2015.804
DO - 10.1557/opl.2015.804
M3 - Contribución a la conferencia
AN - SCOPUS:84994571028
T3 - Materials Research Society Symposium Proceedings
SP - 37
EP - 44
BT - Advanced Structural Materials - 2014
A2 - Lopez-Cuevas, Jorge
A2 - Hernandez, Francisco C. Robles
A2 - Garcia-Murillo, Antonieta
PB - Materials Research Society
T2 - 23rd International Materials Research Congress, IMRC 2014
Y2 - 17 August 2014 through 21 August 2014
ER -