Question

Why graphite is used as solid lubricant

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Answer 1

ᴛʜᴇ ᴄᴀʀʙᴏɴ ᴀᴛᴏᴍs ᴀʀᴇ sᴛʀᴏɴɢʟʏ ʙᴏɴᴅᴇᴅ ᴛᴏɢᴇᴛʜᴇʀ ɪɴ sʜᴇᴇᴛs. ʙᴇᴄᴀᴜsᴇ ᴛʜᴇ ʙᴏɴᴅs ʙᴇᴛᴡᴇᴇɴ ᴛʜᴇ sʜᴇᴇᴛs ᴀʀᴇ ᴡᴇᴀᴋ, ɢʀᴀᴘʜɪᴛᴇ sʜᴏᴡs ʟᴏᴡᴇʀ sʜᴇᴀʀɪɴɢ sᴛʀᴇɴɢᴛʜ ᴜɴᴅᴇʀ ғʀɪᴄᴛɪᴏɴ ғᴏʀᴄᴇ. ᴛʜᴜs ɪᴛ ᴄᴀɴ ʙᴇ ᴜsᴇᴅ ᴀs ᴀ sᴏʟɪᴅ ʟᴜʙʀɪᴄᴀɴᴛ ᴀɴᴅ ʜᴀs ʙᴇᴄᴏᴍᴇ ᴏɴᴇ ᴏғ ᴛʀᴀᴅɪᴛɪᴏɴᴀʟ ᴀɴᴅ ᴘʀɪᴍᴀʀʏ sᴏʟɪᴅ ʟᴜʙʀɪᴄᴀᴛɪᴏɴ ᴍᴀᴛᴇʀɪᴀʟs.

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Answer 2

Answer:

Why graphite is used as solid lubricant?

• It is due to this slipperiness effect that graphite acts as a good lubricant. Graphite exists in two forms, namely, flake graphite and lump graphite. When the crystals of graphite break into hexagonal flakes, they can slide over each other, which gives graphite a greasy texture.