Characterization of grain microstructure of materials (metal, ceramics) using optical microscope.

1. To accommodate load-bearing in thermal barrier coatings, which types of grains are preferred:
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2. Following is an example of which type of grain:
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3. Following is an example of which type of grain:
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4. Following is an example of which type of grain:
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5. Following is an example of which type of grain:
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