Comparison of hot corrosion resistance of Sm2Zr2O7 and (Sm0.5Sc0.5)2Zr2O7 ceramics in Na2SO4+V2O5 molten salt
Source abstract
Abstract
Abstract Sm 2 Zr 2 O 7 and (Sm 0.5 Sc 0.5 ) 2 Zr 2 O 7 ceramics were fabricated by a chemical co-precipitation and calcination method, and their hot corrosion behaviors in Na 2 SO 4 +V 2 O 5 molten salt were investigated. Hot corrosion tests were carried at 700 °C, 800 °C and 900 °C for 4 h, and corroded surfaces were investigated using X-ray diffractometer and scanning electron microscopy. The corrosion products of Sm 2 Zr 2 O 7 ceramics were composed of SmVO 4 and monoclinic-ZrO 2 , while those of (Sm 0.5 Sc 0.5 ) 2 Zr 2 O 7 ceramic consisted of SmVO 4 and Zr 5 Sc 2 O 13 . Considering the fact that Zr 5 Sc 2 O 13 is more desirable than monoclinic-ZrO 2 for thermal barrier coating applications, (Sm 0.5 Sc 0.5 ) 2 Zr 2 O 7 showed better corrosion resistance to Na 2 SO 4 +V 2 O 5 salt than Sm 2 Zr 2 O 7 . The hot corrosion mechanisms of Sm 2 Zr 2 O 7 and (Sm 0.5 Sc 0.5 ) 2 Zr 2 O 7 in Na 2 SO 4 + V 2 O 5 salt were discussed in detail.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: High-Temperature Coating Behaviors · Nuclear materials and radiation effects · Advanced ceramic materials synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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