Inorganic/Inorganic Composites Through Emulsion Templating.

Area of Science:

• Materials Science
• Ceramics Engineering
• Nanotechnology

Background:

• Inorganic composites are vital for energy transition technologies, with microstructure dictating performance.
• Existing fabrication methods offer limited control over microstructure and shape complexity.

Purpose of the Study:

• To develop a simplified, inexpensive processing platform for in situ microstructure control and 3D shaping of inorganic composites.
• To demonstrate the fabrication of advanced ceramic composites with enhanced mechanical properties.

Main Methods:

• Combining emulsions and slip casting for a novel composite processing technique.
• Utilizing a two-step solvent removal process during slip casting for conformal pore coating.
• Employing magnetically responsive droplets for in situ fiber alignment within the matrix.

Main Results:

• Successful production of strong, lightweight alumina scaffolds with conformal zirconia coatings.
• Demonstrated in situ formation of aligned metallic iron fibers within an alumina matrix.
• Achieved a tenfold increase in the work of fracture for alumina-iron composites compared to pure alumina.

Conclusions:

• The emulsion-assisted slip casting method offers a versatile and cost-effective route for fabricating complex inorganic composites.
• This process enables precise control over microstructure, leading to significantly improved material properties for demanding applications.