I am an independent consultant looking at failures of sapphire glass tubes. Micro cracking have been experienced in sapphire tubes during the plasma etch process. Do you have any technical literature on this failure mechanism? I'm touching base with many sapphire tube suppliers. I'm not looking to point the fingure an anyone. I'm just collecting information and comming up to speed on this type of failure.
Unfortunately, I have not any literatute on failure mechanism in sapphire tubes. I think this question connected with thermoelastisity of the sapphire crystals. Prof. V.L. Indenbom (Institute of Crystallography Academy of Sciences of USSR) have studied the same problems. Please, find him scientific works at 60-70 years in journal “Crystallography” and other. And I recommend to read the book “Ruby and Sapphire” “Nauka” about 1970. All authors are from Institute of Crystallography. It is all what I can say you.
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