if by "send" you mean write a vcard on
an nfc tag and have an nfc-aware app read
it, the answer is yes. if, in addition, you mean
can the vcard be added to someone's list of
contacts, the answer is also yes, but you would
need an app that both read the tag and sent an
intent to add the information to the contacts
list.
any of the ndef tag reader examples found here
can write to and read from the tag. you would
simply have to extend the example to run the
intent.