Titanium casting is done_____________?
Correct answer: D. Under vacuum in argon atmosphere
- A. Using CAD-CAM technique
- B. Under air pressure in nitrogen atmosphere
- C. In specially fabricated aluminium vanadium
- D. Under vacuum in argon atmosphere
Explanation
Titanium reacts readily with oxygen and nitrogen at casting temperatures, so it is melted and cast under vacuum or an inert argon atmosphere. Ordinary air casting would cause contamination and poor properties.
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