No. What you're talking about is Antarctic Vibranium which emits waves which breaks down and liquefies all metals including adamantium on the molecular level by simply being around it. imilar attacks on the moelcular level has wrecked adamantium. Otherwise neither metal can cut through the other. And Vibranium has been broken way more than adamantium
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And no, Wolvie's bones (claws) arent tougher than Cap's shield. (please log in to view the image)
Whether the shield is proto adamantium or adamantium/vibranium mix this week, its always been the tougher.
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Caps shield is vibranium, an iron/steel alloy and some third unknown accidental catslyst. That's why it cant be replicated. Originally it was proto-adamantium. The proto prefix indicating it was a prototype. But Marvel retconned that. True adamantium can be replicated but is supposedly extremely expensive....then u have beta adamantium which is what logan has ( adamantium molecularly bonded with bones..them secondary, uru...vibranium, carbonadium etc....the strongest alloy Iirc is adamantine. Basically adamantium thats been blessed by the gods.
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No. If say (insert really strong guy) tried to rip Logan in half it wouldn't happen. Because as of yet his bones cant be broken whereas Caps shield has been broken several times albeit by skys and above. Vibranium isnt really that durable. Its mystical and absorbing properties are what makes it valuable. You can punch it all you like to no avail but u can rip/break it.
Interesting theory.
Though we've seen Logan ripped in half (Ultimates U) and have his hand cut off (AoA) those were instances of the skeletal support structures being compromised.
Pretty sure a Sky would be able to break bones as well as shield though. Thats last is just my theory.