Is there a gas that stops metal melting?

Answer 1

There isn't a gas that can directly stop metal from melting, as melting is a physical change that occurs at specific temperatures. However, certain gases, like argon or nitrogen, can create an inert atmosphere that prevents oxidation and other reactions during high-temperature processes, which can help maintain the integrity of metals while they are heated. This is commonly used in welding and Metallurgy to protect the metal from contamination. Ultimately, controlling the environment can influence the melting process, but it does not prevent melting itself.