Abstract
a substitutional solid solution, and, more particularly, the primary or terminal solid solution based on A or B. In addition.to the two terminal phases there may be one or more inter� mediate phases in the A-'-B system. These are phases which include the com position AnBm, with nand m usually small integers, and whose structures differ from those of the elemental components. A particular intermediate phase may exist over a considerable range of composition [e.g., the (3 phase (1) in the copper-zinc system] or it may be narrowly confined in composition [e.g., the phase KNa2 (2) in the sodium-potassium ]. On the basis of conven tional chemical'experie nce some writers reserve the term intermetallic com pound to those intermediate phases whose compositions are narrowly res tric ted, i.e. varying by not more than one atomic percent. However, there is no fundamental difference between this kind of intermediate phase and one .
Published Version
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