The easiest and best way to clean these alloys from corrosion products and from scale is by sandblasting or shot blasting. When shot blasting with small steel balls, you not only clean the surface, but also harden it. Glass bead treatment cleans the surface of oxides, makes it smooth and gives it a beautiful shine. The main thing is not to use coarse-grained abrasive powders like corundum for sandblasting, which make the surface rough. For small parts, it is more profitable to use tumbling instead of sandblasting.
Dear Manas Ranjan Sahu . See the following useful RG link: Article Corrosion behaviour and surface analysis of a Co-Cr and two ...
Kindly see also the following useful RG link: Article Evaluation of corrosion resistance of Co-Cr alloys fabricate...
Also check please the following useful RG link: Article Physico-mechanical properties and prosthodontic applications...
The following links are also very useful: https://www.scielo.br/j/mr/a/nHyVFM3WwHZWM5MwMMGX4LH/?format=pdf&lang=en
https://hal.archives-ouvertes.fr/hal-02294609/document
Visit kindly the following useful RG link: Chapter Assessment of Dental Alloys by Different Methods
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