What is the difference between “random orientation” and a specific orientation (C-axis is not always the best, A-plane is actually easier to grind and polish, etc.).
The Random is material without any orientation. But Random may be and C- plane, A- plane and other.
|Synthetic sapphire finishing|
|1) if sapphire is subjected to essentially constant tension of e.g. 350 MPa, does it experience fatigue? 2) Can you make a sapphire plate, whose width is given by a given Gaussian function (maximum e.g. 40 mm in the center), thickness about 1 mm, and length about 200 mm?|
|We have some sapphire wafers that are about .800" in dia. x .1" thick. We are drilling holes in these wafers from .066" dia. to .010" dia. The wafers are cracking so we need to anneal them. What is the process for annealing sapphire?|
|What is the difference between “random orientation” and a specific orientation (C-axis is not always the best, A-plane is actually easier to grind and polish, etc.).|
|I have been polishing c-plane sapphire using alumina slurry and have been getting around 12 um/hr removal rate. I am trying now to polish A plane sapphire, but my removal rate dropped considerably to less than 4 um/hr? Do the A plane and C plane polish differently?|
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