I want to etch the Yb2O3 oxide but I did not found any etchant to etch this material if anyone has an idea about etching this oxide please let me know.
The plasma etching behavior of Y2O3 coating was investigated and compared with that of Al2O3 coating under various conditions, including chemical etching, mixing etching and physical etching. The etching rate of Al2O3 coating declined with decreasing CF4 content under mixing etching, while that of Y2O3 coating first increased and then decreased. In addition, the Y2O3 coating demonstrated higher erosion-resistance than Al2O3 coating after exposing to fluorocarbon plasma. X-ray photoelectron spectroscopy (XPS) analysis confirmed the formations of YF3 and AlF3 on the Y2O3 and Al2O3 coatings respectively, which acted as the protective layer to prevent the surface from further erosion with fluorocarbon plasma. It was revealed that the etching behavior of Y2O3 depended not only on the surface fluorination but also on the removal of fluoride layer. To analyze the effect of porosity, Y2O3 bulk samples with high density were prepared by spark plasma sintering, and they demonstrated higher erosion-resistances compared with Y2O3 coating.… Read more📷📷📷📷
Article Plasma Etching Behavior of Y2O3 Ceramics: Comparative Study with Al2O3
Thanks, John for replying. You are talking about Y2O3 but My oxide is Yb2O3. Both oxides are different. I will try to do as you mentioned, may be it will work in Yb2O3 also.