In Captain America: Civil War, after a brief scuffle between Captain America and the Black Panther, the Cap makes a passing comment about the material of the Panther's suit - suggesting it is made from Vibranium.
There are several references between the Black Panther and the Vibranium in the MCU (AoU - Klaw stole the Vibranium and has a Wakandan brand), and there are mentions of this in the comics as well.
However, from my memory, the Black Panther suit was originally made from Adamantium, similar to Wolverine. Is this true? If so, why was it changed?