i added an image. i hope it helped :)
The copper and oxygen and oxygen atoms are not ions, and the bonds are more covalent than they are ionic.
Of course steady state condition occurs in almost any system but time it will occurs varies among system. for this kind of system, conduction, steady state conduction occurs when the temperature change from one point to the point is already constant. steady state is not achieved immediately because the heat travels and material will not be heated at the same way at the starting point.
