RuIr3

RuIr3 is an intermetallic compound in the ruthenium–iridium system with the stoichiometry RuIr3. It represents an ordered phase that can arise when ruthenium and iridium are combined in a 1:3 ratio and subjected to elevated temperatures, though detailed crystallographic characterization remains limited.

Phase relations and occurrence

In binary Ru–Ir phase diagrams, RuIr3 has been reported as a high-temperature phase in some studies. The available literature provides limited and sometimes conflicting information on its stability range and exact structure, and there is no universally agreed crystallographic description for this composition.

Synthesis and processing

Intermetallics in the Ru–Ir system are typically prepared by high-temperature alloying methods, such as arc melting or powder metallurgy, followed by homogenization annealing under inert conditions. For RuIr3, reported preparation routes emphasize achieving the precise stoichiometry and promoting ordering through subsequent heat treatment, although detailed procedural parameters are not consistently documented in the literature.

Structure

Crystal-structure data for RuIr3 are scarce. Some reports imply an ordered intermetallic lattice, but there is no widely accepted or widely cited structure type for this composition. Consequently, structural assignments remain tentative and vary between studies.

Properties and applications

Specific physical, mechanical, and chemical properties for RuIr3 are not well documented. Based on its constituent elements, the compound is expected to have a high melting point and substantial hardness, with potential chemical inertness and catalytic activity in certain reactions, though concrete measurements are not established in the public record.

See also

Ruthenium

Iridium

Intermetallic compounds

Phase diagrams of the Ru–Ir system