Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Mariamma Mathew"'
Publikováno v:
Transactions of the Indian Ceramic Society. 78:131-136
Nickel-cobalt ferrite (NCF) without Sn-dopant and with (x = 0 to 0.1%), (Ni0.7Co0.3)(Fe2–xSnx)O4+ d, have been synthesized through solid-state route. Calcination of oxides at 900°C yielded spinel p...
Autor:
H. Sreemoolanadhan, S.C. Sharma, M.R. Ajith, Mariamma Mathew, C. Venkateswaran, Amarnath Padala
Publikováno v:
Materials Science Forum. :436-439
Mica containing glass-ceramic is prepared by crystallizing magnesium alumino silicate glass between 600°C and 1100°C without the use of any additives or nucleating agents. Effects of ceramization heat treatment conditions on phase constitution and
Publikováno v:
Materials Science Forum. :425-428
BaTi4O9(BT4), has dielectric constant (εr)≈36 and unloaded Q-factor (Qf) >35,000GHz, but has temperature coefficient of frequency (τf~16-20ppm/°C). Ba2Ti9O20(B2T9), very near to BT4 in the BaO-TiO2phase diagram, has εr~38, Qf~35,000GHz and τf3
Publikováno v:
Materials Science Forum. :444-447
Materials with relative permittivity or dielectric constant near to that of air (εr~1) are known as ‘ultra-low k’ materials. They find a number of applications in inter-connects of micro-electronic circuits, antennae, high-speed communication su
Publikováno v:
Materials Science Forum. :476-479
Silica aerogels have been prepared through sol-gel process by polymerization of TEOS in the presence of NH4F and NH4OH as catalysts. The solvent present in the gel is replaced by ethanol followed by a non-polar solvent such as n-hexane prior to solve
Publikováno v:
Powder Technology. 267:273-278
This study brings out the findings of milling and dispersion of carbon fibers (CFs) and silicon carbide (SiC) powder in a wide range of CF to SiC ratios (10:90, 20:80, 30:70, and 50:50 vol%). The composite powders were prepared by chopping and exfoli