(Al_13.28Si_2.72)(Fe_1.19Ni_2.81).

Area of Science:

• Materials Science
• Crystallography
• Solid-state Chemistry

Background:

• Intermetallic phases are crucial in advanced material applications.
• Understanding the formation and structure of novel alloys is essential for materials development.
• High-pressure sintering is a technique used to synthesize materials with unique properties.

Purpose of the Study:

• To synthesize and characterize a new intermetallic phase.
• To determine the crystal structure and site occupancies of the synthesized phase.
• To investigate the formation of (Al,Si)5(Fe,Ni) alloys under high pressure.

Main Methods:

• High-pressure sintering (HPS) of elemental mixtures.
• X-ray diffraction for crystal structure determination.
• Analysis of atomic site occupancies and ratios.

Main Results:

• The inter-metallic phase (Al$_{13.28}$Si$_{2.72}$)(Fe$_{1.19}$Ni$_{2.81}$) was successfully synthesized.
• The crystal structure was determined to be space group *C*2/*m* with Z = 2.
• Detailed occupancy ratios for Si:Al and Ni:Fe on co-occupied sites were established.

Conclusions:

• The study successfully identified and characterized a new intermetallic phase.
• The determined crystal structure provides a basis for understanding the alloy's properties.
• This work contributes to the knowledge of phase formation in Al-Si-Fe-Ni systems.