. 2020 Aug 13;10:13681. doi: 10.1038/s41598-020-70648-0

Table 5.

Comparison of corrosion rate constants of REPO₄ (RE = Lu, Yb, Er, Y and Sc). As a comparison, the values of Yb₂SiO₅ and Yb₂Si₂O₇ are also included. The normalized conditions are 50% H₂O-balance O₂ vapor with a flow of 0.3 cm/s and a total pressure of 1 atm at 1,500 °C for 80 h.

Compound	ScPO₄	YPO₄	ErPO₄	YbPO₄	LuPO₄	Yb₂SiO₅	Yb₂Si₂O₇
Corrosion rate constants (× 10⁻⁴ mg/ cm² h)	2.32 ± 0.91	2.51 ± 1.33	4.08 ± 1.87	4.31 ± 1.92	1.89 ± 1.03	7.46 ± 3.24	11.02 ± 3.91

Compound

ScPO₄

YPO₄

ErPO₄

YbPO₄

LuPO₄

Yb₂SiO₅

Yb₂Si₂O₇

Corrosion rate constants

(× 10⁻⁴ mg/ cm² h)

2.32 ± 0.91

2.51 ± 1.33

4.08 ± 1.87

4.31 ± 1.92

1.89 ± 1.03

7.46 ± 3.24

11.02 ± 3.91