Since they are mostly masonry structures the largest part of the waste material is ceramic waste.
The head material was ceramic in 90 cases and metal in 23.
In contrast, current graft materials are either ceramic powders or physical blends of mineral and organic phases with mechanical properties far inferior to those of their target tissues.
The most common piezoelectric materials (PM) in use today are ceramic crystals which are heavy and brittle despite high piezoelectricity.
Dr. Vanderah said that only two ceramic materials are optimized for use with 900-megahertz base stations.
Most of the primary chemical bonds found in ceramic materials are actually a mixture of ionic and covalent types.
Stainless steel and ceramic materials are used to provide durability at high operating temperatures (approaching 1,300 °C [about 2,300 °F]).
Only a few ceramic materials are known that meet the demands imposed by the wireless operating frequency, the required power levels and the type of application used, whether a base station or hand-held device.
Because their critical temperatures (Tc's; the temperatures at which the transition occurs from resistivity to superconductivity) are much higher than those of conventional metallic superconductors, these ceramic materials are referred to as high-Tc superconductors.
Such ceramic materials are abundant, low-cost and non-hazardous.
