nope actually if he uses that black thingy and use it as the shield to stop amaterasu,blackflames will burn only the black thingy because it was it just got in the way of the target like the black rods madara used to stop the enton arrow.Yes, but he'll just sense it and use the black things...
wait, the black things doesn't work, so yeah =D
other than that if it hits his body then maybe.
also juugo infused directly his chakra with susanoo because he was in contact with it,yet idk how he will be able to infuse black flames with his power.