Tin-based white metal alloys find application where bearings experience___________________?
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Answer: A. High pressure & load
Explanation
Tin based white metal alloys provide excellent conformability and low friction under heavy loads. Babbitt metals are engineered specifically to withstand high pressure bearing surface applications. Their soft matrix embeds microscopic debris preventing scoring on rotating steel shafts. Plain bearings require specialized alloy compositions to manage sliding friction and high loads. Tin and lead based white metals possess high surface fatigue resistance and good embeddability. Metallurgical microstructure consists of hard crystals embedded in a soft ductile matrix.
Large industrial turbines and reciprocating engines utilize white metal bearings for reliability. Mechanical maintenance programs monitor bearing wear to prevent catastrophic machinery seizure. Tribology principles guide the selection of bearing materials for high pressure mechanical systems. Low pressure applications do not require the specialized high load capacity of white metals. High temperature environments can soften tin based alloys reducing their mechanical load strength. Large surface wear is an undesirable condition that proper bearing alloys are designed to prevent.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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