Microstructure, mechanical properties and corrosion behavior of AlxCrMoNbZr multiprincipal element alloy coatings for accident-tolerant fuel claddings: Effect of Al content

Effect of Deposition Temperature on the High‐Temperature Corrosion Resistance of CrMoNbZr Medium‐Entropy Alloys Coatings

“…Subsequently, with the exhaustion of near‐surface Zr and Nb, Cr was able to oxidize and a Cr 2 O 3 layer formed in the lower interstitial Nb 2 Zr 6 O 17 particles (Figure 14b), which was confirmed in similar studies. [ 51 ] At the same time as Cr 2 O 3 was formed, a few Mo were also oxidized by O to MoO 3 due to Mo element was combined with the other elements through atomic tessellation. And the formed MoO 3 was embedded in the Cr 2 O 3 layer.…”

“…Subsequently, with the exhaustion of near-surface Zr and Nb, Cr was able to oxidize and a Cr 2 O 3 layer formed in the lower interstitial Nb 2 Zr 6 O 17 particles (Figure 14b), which was confirmed in similar studies. [51] [49] creating holes in the coating. The formed holes on the surface of the coating will act as a fast channel for oxygen element, which promoted oxygen to enter the coating and the formation of MoO 3 inside the coating.…”

Oxidation and Mechanical Behavior of Cr-Coated Laser Beam Welds Made from E110 Zirconium Alloy

“…It can cause failures of Zr alloy fuel claddings and/or spacer grits of nuclear assemblies. To date, several ongoing studies of candidate structural material for LWRs are still being performed [2][3][4][5][6][7]. The main attention is focused on their oxidation resistance under accidental conditions, e.g., at a loss of coolant accident as it occurred in the Fukushima nuclear power plant [8][9][10].…”