The question is unclear: what is meant by meta-metal interface? Any two metals can form some interface. There are differences in the mechanism of this formation, for example intermetallic compounds or solid solutions, but some interface is always present.

Vadim Verlotski, I want a sharp interface of two metal surfaces. As I know, all metals will not form a sharp interface with other metals as they may interdiffuse. I want to know if there is a way to check whether two metal surfaces will form a sharp interface or not. (e.g., Cu(111)and Nb(110) surfaces form a sharp interface.

Thank you

In this case, you need the two metals with minimal solubility in each other. An example of this: iron and lead. State diagram for such systems looks like two parallel lines (see figure). The state diagram Cu-Nb looks very similar with the difference that niobium is soluble in molten copper. The fact that copper cannot be dissolved in solid niobium is enough to establish a sharp boundary between niobium and copper.

@Vadim Verlotski..Can you plz tell me the method? I need to check for different metals.

The method is very simple: look through two-component state diagrams of different metal pairs until you find a diagram similar to the ones I gave above, with the insolubility of the components in the solid state (with a straight horizontal line).

@ Vadim Verlotski, plz tell me which application are you using to plot that graph

and what x-axis means? I am having problem understanding that graph..plz also attach materials to study that if available.

Thank you so much for helping.

You need to learn how to use state diagrams (also phase diagrams) of substances. You can find explanations on the net, for example here:

https://www.youtube.com/watch?v=G83ZaoB3XCc

The phase diagrams of metals themselves are also on the Internet, but you have to look.

@Vadim Verlotski, Thank you so much..

Is there any software to plot these phase diagrams if we like to test different combinations of metals? For example, Ta and Ag which may not be found on the internet.

State diagrams are not drawn in some computer programs, but according to experimental data. Building one single two-component diagram is a difficult, and sometimes just a gigantic scientific work. Look at the iron-carbon diagram, for example. Fortunately for us, the work on creating the majority of two-component state diagrams of metals was carried out and published by various researchers in the twentieth century.

Vadim Verlotski, Sir, can you conclude something about the miscibility of Cu-Zr from these phase diagrams? and why are there two different phase diagrams?

Hi Debamoy Pegu,

There are no two phase diagrams of Cu-Zr, but a full diagram (picture above) and a small section of it (picture below). The small section showing Zr content down to 1% Zr is important because it contains important copper alloys. The remainder of the diagram (up to 100% Zr) is larger and more interesting from a theoretical point of view, but less important from a technical point of view because it covers almost no commercial alloys. By the way, the same applies to the Fe-C phase diagram.

From the Cu-Zr diagram you can see that in this system both intermetallic compounds and eutectics exist and the two elements can dissolve in each other in both solid and liquid states. So, this is not the system you are looking for.

Vadim Verlotski thank you so much Sir. It helped me a lot.

Thank you very much for your replies. I am currently studying on CuZr alloy and its interaction with another element. Is it possible to create interatomic potential as I need it for molecular dynamics simulation? And if so, may I know how it can be done? I will be grateful to you.