摘要 |
A method of making a composite structure comprising a substrate banded to a compound one of whose constituent elements is mobile within the compound, eg lithium, the method comprising taking a substrate material containing at least one element of the compound, causing the element to emerge at a surface of the substrate material, and applying a medium containing the other element(s) of the compound to said surface under conditions promoting formation of the compound. The compound may be LiN3, Li8AlN3, Li8ON2 or Li9N2Cl3. |