Scientific Research Publishing

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53694#.VM85iizQrzE Author(s)   Toshihito Ohtake Affiliation(s) Department of Mechanical Systems Engineering, Faculty of Engineering, Aich University of Technology, Gamagori, Japan . ABSTRACT Li 4 Ti 5 O 12 has been noticed about a negative electrode of a high powered and safe lithium ion secondary battery. These properties require single phase, high crystallization, larger specific surface area and fine nanoparticles. This study carried out the noble synthesis of Li 4 Ti 5 O 12 using a solid phase synthesis by two steps sintering. These results showed Li 4 Ti 5 O 12 of 6.1 m 2 ·g -1  and diameter of 110 nm with the single phase and high crystallization. Li 2 TiO 3 will play an important role in this reaction, obtained by pre-sintering as a precursor.   KEYWORDS Lithium Ion Secondary Battery , Li 4 Ti 5 O 12 , Solid Phase Synthesis , Sinte...

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=52978#.VK8wFMnQrzE Author(s)     Balakrishna Palanki Affiliation(s) (Retired) Nuclear Fuel Complex, Hyderabad, India . ABSTRACT Thorium based nuclear fuel is of immense interest to India by virtue of the abundance of Thorium and relative shortage of Uranium. Thorium metal tubes were being cold drawn using copper as cladding to prevent die seizure. After cold drawing, the copper was removed by dissolution in nitric acid. Thorium does not dissolve being passivated by nitric acid. Initially the copper cladding was carried out by inserting copper tubes inside and outside the thorium metal tube. In an innovative development, the mechanical cladding with copper was replaced by electroplated copper with a remarkable improvement in thorium tube acceptance rates. Oxalate derived thoria powder was found to require lower compaction pressures compared to am...

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=50943#.VFCEzVfHRK0 Author(s)    Manas Kamal Haldar * , Chandrima Ghosh , Arup Ghosh Affiliation(s) Refractories Division, CSIR-Central Glass & Ceramic Research Institute, Kolkata, India . ABSTRACT The present work intends to study the properties of magnesia based refractory aggregates developed from Indian magnesite by changing lime/silica ratio. The material has been sintered in the temperature range of 1550C - 1700C. The sintered samples are characterized in terms of bulk density, apparent porosity, true density, percentage densification, mechanical, thermo-mechanical properties like cold modulus of rupture, hot modul...