Article - 28 Jul 2001
Although lead occurs as such in nature, it is rare. Lead is chiefly obtained from galena (PbS) through the process of roasting.
Article - 4 Jun 2013
Beryllium is a chemical element with atomic number 4, represented by the chemical symbol ‘Be’. It is a toxic, bivalent element having a steel gray appearance. It is a lightweight metal having very...
Article - 6 May 2013
Alloy steels containing as high as 4-8% alloying elements are known as low alloy steels, which are made through the addition of different elements.
Article - 22 Oct 2012
In 1978, beryllium was discovered by Abbe Rene-Just Hauy. It is a fairly soft metal, brittle in nature, and has high ductility, specific heat, stiffness-to-weight ratio, strength-to-weight ratio and...
Article - 19 May 2012
In this study three different geopolymer compositions have been investigated and characterized as potential biomaterials.
Article - 28 Sep 2011
Tellurium is a metalloid element with the chemical symbol Te and atomic number 52. It is used primarily in iron, copper and lead alloys in and around the machining processes. Other properties and...
Article - 17 Feb 2011
These versatile compounds can be cured at ambient temperatures, elevated temperatures and upon exposure to UV light.
Article - 13 Jul 2008
Macroporous ZrO2 - Al2O3 mixed oxides containing different amounts of Al2O3 were prepared via colloidal processing using negatively charged polystyrene spheres as template and ultrafine particles of...
Article - 14 Mar 2006
This article demonstrates that it is possible to overcome the problem of low activity of grafted zirconocene catalysts by the previous chemical modification of the silica surface with SnCl4.
Article - 23 Sep 2005
Li1-xNi1+xO2 powder was successfully prepared by the sol-gel method using oxalic acid as a chelating agent with the subsequent calcination at 650-800°C for 14-48 h. The formation mechanism of...