Application of TXAX

Metal Matrix Composites

Advanced Ceramics Avoiding Problems associated with Light Alloys

Against a background of environmental and energy problems, there is an increasing demand for reducing weight and downsizing components. In the field of metallic materials, high expectations are held for light alloys such as aluminum alloys. However aluminum alloys have restricted use due to having a large coefficient of thermal expansion and difficulties associated with regulating the thermal conduction ratio. Its improvement has been suggested by forming a composite with ceramic fibers, and potassium titanate displays several advantages in that regard including low thermal expansion, low thermal conduction and low hardness.

Kubota's potassium titanate differs from microfibers and has large size. Therefore the material enables high safety, excellent wettability with alloys and dispersibility in alloys.

Effect of Composite with Aluminum Alloy (Squeeze Casting Method)

Relationship of thermal conductivity and TXAX volume ratio of aluminum alloy Composites

Relationship of average linear expansion coefficient to TXAX volume ratio of aluminum alloy composites

Cutting resistance and hardness of TXAX aluminum alloy composites

Surface roughness after cutting of TXAX aluminum alloy composites

After Kazunori Asano, Department of Mechanical Engineering, Faculty of Science and Engineering, Kinki University

Examples of Squeeze Casting

TXAX composite Al-MMC
TXAX composite Al-MMC
Composition photograph (TXAX 45vol%)
Composition photograph (TXAX 45vol%)

SEM Images of Products


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Asano, K., et al. (2008) “Microstructure and Thermal Properties of Squeeze Cast Aluminum Alloy Composite Reinforced with Short Potassium Titanate Fiber,” Materials Transactions, Vol.49, No.11 (2008) pp.2664 to 2669

Asano, K., et al. (2008) “Machinability of Short Potassium Titanate Fiber Reinforced AC4A Aluminum Alloy Composite,” Materials Transactions, Vol.49, No.10 (2008) pp.2399 to 2404