Disciplines bound by pressure

Article Abstract:

A Materials Research Society symposium focused on the subject of high-pressure materials. High pressure in materials synthesis has been used in the search for new super-hard materials, and shock compression techniques have been useful in geophysics, providing information on the behaviour of materials under extremes of pressure and temperature. The complex behaviour of hydrogen is another focus of attention in high pressure physics, and a recent development in optoelectronics is the use of GaN to make blue LEDs and lasers.

Materials science

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Icosahedral packing of B12icosahedra in boron suboxide (B6O)

Article Abstract:

It has been possible to prepare, at high temperatures and pressures, boron suboxide (B6O) in which the preferred form of the material is as macroscopic, almost perfect, regular icosahedra. The rhombohedral structure of B6O almost exactly fits the geometrical requirements for obtaining icosahedral twins. The B6O multiply-twinned particles are among the largest of self-assembled regular icosahedral particles identified so far.

Boron, Boron (Chemical element)

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Flame-broiled alumina

Article Abstract:

Strategies are being developed for creating ceramics, including glasses that are toughened against fracture. The flame-spray technique for preparing aluminate glasses and glass-ceramic composites opens up new possibilities for generating mechanically strong structural components and high-hardness coatings.

Science & research, Metal ores, not elsewhere classified, All Other Metal Ore Mining, Alumina, Optical properties, Aluminum oxide, Ceramic composites

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