Article - 30 Apr 2009
Tin dioxide based varistor ceramics SnO2-Co3O4-Nb2O5-Cr2O3-xCuO (x=0; 0.05; 0.1 and 0.5) were made and their electrical properties were studied.
Article - 3 Jan 2008
In this article, for the first time, Bismuth copper phosphate (BiCu2PO6) is reported as a metal phosphate that has activity for oxygen evolution under visible light irradiation. It showed intense...
Article - 19 Dec 2007
TiO2-SiC photocatalyst was prepared by a calcination of TiC-SiC nano particle precursor synthesized by the carbothermic reduction method. Well-crystallized TiO2 deposited on SiC and hydrophobic...
Article - 20 Sep 2005
Porous Si3N4 ceramics with different pore morphologies have been fabricated, utilizing organic whiskers and starch as the fugitive agents. The effect of the various pore types on mechanical...
Article - 22 Apr 2002
CuAlNi alloys are the second most popular family of SMA's. They have transformation in the range 80-200°C and are much cheaper to produce than NiTi alloys. Advantages, compositions, manufacture and...
Article - 13 Oct 2005
The core of the Ecoflex systems is a tire with one sidewall removed and filled with crushed stone or recycled concrete aggregate. This technology allows a range of building solutions to be cost...
Article - 14 Nov 2005
Membranes composed of man-made carbon nanotubes permit a fluid flow nearly 10,000 to 100,000 times faster than conventional fluid flow theory would predict because of the nanotubes’ nearly...
Article - 9 Nov 2009
A catalyst can be defined as a material or substance that speeds up the rate of a chemical reaction, without being consumed by the reaction itself.
Article - 31 Jan 2003
Rhodium is a refractory metal. Its occurrence, and typical properties such as electrical, mechanical, thermal and physical properties are listed.
Article - 18 Dec 2001
Gallium is present as a trace element in germanite, sphalerite, diaspore, coal, and bauxite. Although this metal occurs naturally in approximately the same amount as lead, it is extensively dissipated...