Regularities of Formation of Ternary Intermetallic Compounds Between None Nontransition Element and Two Transition Elements

Villars's system of atomic parameters, R sp , VE and X MB , has been used to investigate the regularities of the formation of ternary intermetallic compounds between one nontransition element (M) and two transition elements (T and T'). It has been found that ternary compounds are usually formed when T is an early transition metal and T' is a later transition metal if the X MB of nontransition metal M is larger than 1 45. The regularities of formation of ternary intermetallic compounds in the T\|T'\|M with two later transition elements or two early transition elements are also investigated.