Materials Sciences

Fracture toughness of Si3N4/S45C joint with an interface crack

Ceramic/metal joints have been increasingly applied in a wide range of engineering fields because the ceramic has stable mechanical properties at high temperature and good resistance to wear, erosion and oxidation. However, the difference of material properties between metal and ceramic induces stress singularities at the interface edge. The stress singularity together with the thermal residual stress degrades the st

Effect of P2O5 and chloride on clinkering reaction

Korean ceramics researchers have recently investigated the potential for using sewerage sludge in cement production. Their research looks at the possibility of effective reutilization of sewage sludge into cement kiln processes. They describe their findings in the online materials science journal AZojomo*.

Increasing environmental regulations on marine dumping means new disposal methods must be found for sewerage sludge.

Preparation and characterization of Li1-xNi1+xO2 powder used as cathode materials

Lithium batteries increasingly permeate our lives in all manner of electrical devices. Researchers from Thailand report on a study that investigates the use of the sol-gel method to produce battery cathodes from a new material. They describe their findings in the online materials journal AZojomo*.

For some time LiNiO2 has been a promising cathode material due to its large discharge capa

A motorcycling jacket using space technology is on hand to chill MotoGP riders racing this weekend in Malaysia and next weekend in Qatar, should the heat require it.

The Anatomic Intercooler System (AIS) jacket was developed by Italian bike clothing company Spidi and was used last year by Spanish rider Sete Gibernau at the world’s hottest motorbike Grand Prix at the Sepang circuit in Qatar.

It keeps the rider cool inside the suit, helping to maintain a low body temperature

The design, development and manufacturing of revolutionary products such as the automobile, airplane and computer owe a great deal of their success to the large-scale material testing systems (MTS) that have provided engineers and designers with a fundamental understanding of the mechanical behavior of various materials and structures.

In the world of nanotechnology, however, where the mechanical characterization of materials and structures takes place on the scale of atoms and

Researchers at the U.S. Department of Energy’s Brookhaven National Laboratory have discovered a way to significantly increase the amount of electric current carried by a high-temperature superconductor, a material that conducts electricity with no resistance. This is an important step in the drive to create superconductor-based electric and power-delivery devices, such as power transmission lines, motors, and generators. The results are explained in the September 12, 2005, online edition of