Captain America's Shield

 

At the onset of WWII, the newly-created Captain America travelled to Wakanda and made an alliance with T'Chaka, the current Black Panther and T'Challa's father. From this meeting, the US government received a sample of Wakandan Vibranium, which was turned over to the scientist and metallurgist Dr. Myron MacLein for study. MacLein attempted to increase the vibranium's durability by fusing it molecularly with other metals, but failed. A one-time laboratory accident one night DID fuse steel to the vibranium, thus creating Cap's shield. It has its discus shape because MacLein was using the circular hatch for a tank as a mold. MacLein never managed to duplicate the process that created the shield, but his experiments along that line eventually led to him creating the less-durable metal known as...Adamantium.

 

As I understand it, this was all unestablished until around Cap #302. Before that, the shield was only referred to as a "space-age metal" or something similar. In early issues of the Avengers, in fact, the shield was treated as disposable. It was destroyed by the Living Laser once, and Cap later turned up in the issue carrying a spare. Once it was established that the shield was a unique object, some minor retcons established that Cap gave his shield to Tony Stark to study for a period of time in the Avengers' early days, and used replica shields during that time. Hence, the "destruction" of the shield.

 

 

2) When Cap was forced to retire, and John Walker replaced him, he was given a new shield made of titanium by Iron Man. When Rogers and Stark had a falling out, he tossed the shield and got a new one from T'Challa, made of pure Vibranium. Walker inherited that shield when he became USAgent.

 

3) Sure.

 

Its also been said that it has a Vibranium core which absorbs the impact of what ever which means Cap doesnt get crushed under the sheild if hit by hulk or whom ever. This my indicate that there is a pure Vib deposit in the centre of the sheild and alloy around or over the surface.

 

Monolith, is your explanation of Vib's relationship to Adamantium in continuity with what has been established in other comics? isnt it found as a raw ore?

All of the answers I listed in my original post were there.  I wanted to use Mono's answer, but my friend didn't.  He "compromised" by going with his second guess.  Guess what?  He was wrong!

 

Monolith was correct: Iron + Vibranium!  My friend still won't believe it and insists that it is Adamantium + Vibranium!

 

After the Heroes Return, Cap lost his classic shield at sea, while rescuing sailors on a submarine from Hydra. He used a more advanced photonic shield during this time, one which could morph into force fields, quarterstaffs, spears, etc. It's covered in more detail in his Power Description. Just look up the Monolith's Power Descriptions thread in Sinister's Lab, and search for Captain America.