Direct Fabrication Technologies & Performance

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Team Leader

Prof. David Taplin Dr. Zhou Wei
 
Powder Injection Molding
PULAC & Semi-Solid Casting of Light Alloys
Novel Powder Processing
Tape Casting of Composite Ceramic Substrates

Powder Injection Molding

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PULAC & Semi-Solid Casting of Light Alloys

PULAC (Precision Processing of Ultra-Light Alloys and Composites for Microelectronics Industries in Singapore)

The objective is to develop research activities and achieve research deliverables in the processing of new ultra-light alloy and composite components for a range of industries including consumer electronics, aerospace and automotive - focusing initially on magnesium die casting for the electronic and telecommunication sectors and on magnesium die castings for automotive components.

The present concern is on magnesium die casting alloys, because of its many advantages: recyclability and end-of-life properties, light weight, availability, low-toxicity, easily castability, electro-magnetic radiation shielding, dematerialization and demanufacturing. Magnesium is an important material for the 21st century.

The research scope covers issues related to parameter and process optimization, alloy improvement, material properties and environmental issues, such as recycling.

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Novel Powder Processing

There has been considerable interest in mullite (3Al2O3×2SiO2) and mullite-matrix composites in recent years due to their desirable properties. However, the difficulty in processing and relative poor mechanical properties have prevented a more widespread use of this ceramic material. 

The present study attempts to form ZrO2-toughened mullite by mechanical alloying (MA) and plasma spraying of high pure alumina and zircon mixtures and investigates the stability of t-ZrO2 in mullite matrix. Emphasis is also put on the clear understanding of toughening mechanisms in ZrO2-mullite composite. Mullitization routine and the kinetics of mullite formation by this unique technique will also be investigated, about which few reports have been found.

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Tape Casting of Composite Ceramic Substrates

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