TY - JOUR
T1 - Mechanical stability of boron-based coatings grown on Incoloy 909 superalloy by thermochemical diffusion
AU - Gaona-Martínez, Mauro J.
AU - Alonso-Saavedra, Omar F.
AU - Ramírez-Ramírez, Javier H.
AU - Castillo-Elizondo, Jaime A.
AU - Zapata-Hernández, Oscar
AU - Pérez-González, Francisco A.
AU - Gallardo-Hernández, Ezequiel A.
AU - Colás, Rafael
AU - Garza-Montes-De-Oca, Nelson F.
N1 - Publisher Copyright:
© 2017 Institute of Materials, Minerals and Mining Published by Taylor & Francis on behalf of the Institute.
PY - 2018/7/3
Y1 - 2018/7/3
N2 - Incoloy 909 superalloy was treated at 950°C to form coatings of different chemical composition by thermochemical diffusion. Packing of the samples in reactive powders lead to the formation of iron borides (Fe2B and FeB) together with nickel boride, NiB, and nickel silicide, Ni2Si, on the surface of the alloy depending on the exposure time. X-ray diffraction, scanning electron microscopy and energy-dispersive X-ray spectroscopy analyses suggest that growth of the coatings is controlled by diffusion of reactive species into the metal structure. Microabrasion wear resistance of the coated specimens was studied at 1 N load for a fixed sliding speed of 0.11 m s−1 and it was compared against uncoated samples of the alloy. It was found that coating the alloy for 12 and 20 h increased the hardness of the alloy and therefore its wear resistance.
AB - Incoloy 909 superalloy was treated at 950°C to form coatings of different chemical composition by thermochemical diffusion. Packing of the samples in reactive powders lead to the formation of iron borides (Fe2B and FeB) together with nickel boride, NiB, and nickel silicide, Ni2Si, on the surface of the alloy depending on the exposure time. X-ray diffraction, scanning electron microscopy and energy-dispersive X-ray spectroscopy analyses suggest that growth of the coatings is controlled by diffusion of reactive species into the metal structure. Microabrasion wear resistance of the coated specimens was studied at 1 N load for a fixed sliding speed of 0.11 m s−1 and it was compared against uncoated samples of the alloy. It was found that coating the alloy for 12 and 20 h increased the hardness of the alloy and therefore its wear resistance.
KW - Boronising
KW - X-ray diffraction
KW - abrasion
KW - coatings
KW - hardness
KW - scanning electron microscopy
KW - superalloy
KW - wear resistance
UR - http://www.scopus.com/inward/record.url?scp=85029415350&partnerID=8YFLogxK
U2 - 10.1080/02670844.2017.1369667
DO - 10.1080/02670844.2017.1369667
M3 - Artículo
SN - 0267-0844
VL - 34
SP - 527
EP - 535
JO - Surface Engineering
JF - Surface Engineering
IS - 7
ER -