TY - JOUR
T1 - Chemical Solution Deposition of Protective Er2O3 and Y2O3 Coatings onto Stainless Steel for Molten Metal Casting using Metal-Nitrate Precursors
AU - Rodriguez, Daniel J.
AU - Edgar, Alexander S.
AU - Williams, Darrick J.
AU - Chov, Ashleigh M.
AU - Vodnik, Douglas R.
AU - Ross, David J.
AU - Siller, Victor P.
AU - Usov, Igor O.
PY - 2023/6/14
Y1 - 2023/6/14
N2 - Chemical solution deposition (CSD) methods involving the thermal decomposition of 5.0 M Er(NO3)3·5H2O and Y(NO3)3·6H2O precursor solutions were employed to fabricate protective erbia and yttria coatings onto stainless steel (SS304/SS316) coupons. The two techniques tested were dip and spray coating, which were then compared to a commercial yttria spray (ZYP Coatings). It was determined that solution concentration, solvent choice, injection of Er2O3 and Y2O3 micropowder, and the annealing temperature/ramp profile were critical to the coatings’ physical properties. For dip coatings, thicknesses were 1-20 μm after two dipping/annealing cycles, and adhesion strength was ∼1000 psi, increasing up to ∼1300 psi if the SS coupons had preliminary sandblasting. Spray coatings from precursor solutions were reported to have thicknesses of 20-80 μm and adhesion strength less than 500 psi (regardless of the coupon surface finish).
AB - Chemical solution deposition (CSD) methods involving the thermal decomposition of 5.0 M Er(NO3)3·5H2O and Y(NO3)3·6H2O precursor solutions were employed to fabricate protective erbia and yttria coatings onto stainless steel (SS304/SS316) coupons. The two techniques tested were dip and spray coating, which were then compared to a commercial yttria spray (ZYP Coatings). It was determined that solution concentration, solvent choice, injection of Er2O3 and Y2O3 micropowder, and the annealing temperature/ramp profile were critical to the coatings’ physical properties. For dip coatings, thicknesses were 1-20 μm after two dipping/annealing cycles, and adhesion strength was ∼1000 psi, increasing up to ∼1300 psi if the SS coupons had preliminary sandblasting. Spray coatings from precursor solutions were reported to have thicknesses of 20-80 μm and adhesion strength less than 500 psi (regardless of the coupon surface finish).
UR - http://www.scopus.com/inward/record.url?scp=85162887564&partnerID=8YFLogxK
U2 - 10.1021/acsami.3c05186
DO - 10.1021/acsami.3c05186
M3 - Article
SN - 1944-8244
VL - 15
SP - 28649
EP - 28663
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 23
ER -