Corrosion behavior of ZrC–SiC composite ceramics in LiF–NaF–KF molten salt at high temperatures

Improvement of Corrosion Resistance of Hastelloy-N Alloy in LiF-NaF-KF Molten Salt by Laser Cladding Pure Metallic Coatings

“…For the pure Co-coated specimens, the pre-corrosion specimen is mainly composed of γ-Co and a few Cr 2 O 3 ; while only γ-Co phase exists after corrosion. This is consistent with the conclusion that the metal oxides are thermodynamically unstable in the molten fluoride salt [4,[23][24][25][26]. For better understanding the formation and dissolution of the metal oxides, the possible chemical reactions and the corresponding Gibbs free energies are given in Table 3.…”

“…However, there are only a few grey Cr 2 O 3 particles as marked "3" and no black NiO particle is discernable after corrosion (Figure 6b1). This suggests that the oxides are unstable in the molten fluoride salt as reported by others [4,[23][24][25][26]. In addition, the matrix is confirmed to be a γ-Ni solid solution with trace elements Mo and Cr diffusing from the substrate during the laser cladding process as marked "4", immune from the molten salt attack, as demonstrated by EDS result and XRD result.…”

“…Corrosion tests were carried out at 900 • C for 100 h, and the detailed experimental procedure was provided in our previous work [17]. Weight loss method was used to determine the corrosion rate (R) of the specimens after corrosion using the following formula [17,23]:…”

Optimization of Alumina Ceramics Corrosion Resistance in Nitric Acid

“…Schacht et al [ 2 ] also identified certain attacks of acidic aqueous solutions at high temperatures and pressures to the grain boundaries. In some cases [ 4 , 11 , 14 , 15 ], the chemical stability was measured by monitoring the weight loss and mechanical properties after exposure to the corrosive media. When the weight loss of ceramic material is below the detectability of the analytical balance, the corrosion can be determined by measuring the number of eluted ions in corrosive media [ 16 ].…”

Corrosion kinetics and mechanisms of ZrC1−xceramics in high temperature water vapor

“…Because of this increased interest in ZrC, the performance of ZrC for nuclear energy applications has been studied, including irradiation effects on its properties, 4,9-15 ssion product compatibility, [16][17][18][19][20][21][22] hydrothermal corrosion resistance, 23 and corrosion resistance to molten salts. 24 The corrosion behavior of ZrC in water vapor is a signicant factor to be considered especially under accident conditions, such as those occurring in a loss of coolant accident (LOCA). 25 However, there have been few studies on the corrosion behavior of ZrC in water vapor.…”