Zobrazeno 1 - 10
of 221
pro vyhledávání: '"Devečerski A"'
Publikováno v:
Science of Sintering, Vol 54, Iss 3, Pp 349-358 (2022)
Anorthite ceramics was fabricated from calcium exchanged Na-LTA zeolite. The powder compacts of Ca-LTA zeolite were sintered at different temperatures ranging between 1100 and 1400°C. It was found that the temperature of 1100°C was sufficiently
Externí odkaz:
https://doaj.org/article/9d4cc2b3897d4b69a1e745044450d470
Autor:
Vidojković Sonja M., Onjia Antonije E., Devečerski Aleksandar B., Grahovac Nebojsa N., Nastasović Aleksandra B.
Publikováno v:
Hemijska Industrija, Vol 68, Iss 5, Pp 559-563 (2014)
The main causes of efficiency loss in thermal power plants are boiler tube failures that diminish unit reliability and availability, and raise the cost of the electric energy. For that reason, regular examination of boiler tubes is indispensable m
Externí odkaz:
https://doaj.org/article/a7a66d66fb524021bdd96648f3548cb6
Publikováno v:
Science of Sintering, Vol 45, Iss 1, Pp 97-105 (2013)
Alumina based specimens having different content of alumina based fibers were investigated for possible application as cavitation resistant material. Cavitation damages of the alumina based specimens were tested by the modified vibratory cavitation s
Externí odkaz:
https://doaj.org/article/8fea3949d2244ac5a1172384e099c359
Publikováno v:
Science of Sintering, Vol 44, Iss 1, Pp 81-94 (2012)
The silicon carbide powders are prepared by carbothermal reduction of domestic mineral resources (white and brown sepiolite), at relatively low temperatures (1200 - 1600oC). Carbothermal reduction process is greatly influenced by chemical composition
Externí odkaz:
https://doaj.org/article/4ab867b7c21c48678ae779929ff865b2
Publikováno v:
Science of Sintering, Vol 41, Iss 1, Pp 75-81 (2009)
The effect of yttria additive on the thermal shock behavior of magnesium aluminate spinel has been investigated. As a starting material we used spinel (MgAl2O4) obtained by the modified glycine nitrate procedure (MGNP). Sintered products were charact
Externí odkaz:
https://doaj.org/article/4aaa76b90fd24ab292d8f680b557e269
Publikováno v:
Science of Sintering, Vol 41, Iss 2, Pp 151-159 (2009)
In this paper the nanosized non-oxide powders were prepared by carbothermal reduction and subsequent nitridation of diatomaceous earth which is a waste product from coal exploitation. Our scope was to investigate the potential use of diatomaceous ear
Externí odkaz:
https://doaj.org/article/a3bedf1df22e494eb6bbf74e8552ec76
Autor:
Egelja Adela, Gulicovski Jelena, Devečerski Aleksandar, Babić Biljana, Miljković Miroslav, Bošković Snežana, Matović Branko
Publikováno v:
Journal of the Serbian Chemical Society, Vol 73, Iss 7, Pp 745-751 (2008)
Coniferous wood (fir) was transformed by pyrolysis into carbon preforms, which were subsequently converted into biomorphic ceramics by the pressure infiltration technique with colloidal silica. An in situ reaction between the silica and the carbon te
Externí odkaz:
https://doaj.org/article/3ac34b81e78746d6b844f16f97a21991
Publikováno v:
Science of Sintering, Vol 40, Iss 2, Pp 141-145 (2008)
This paper deals with a new method for producing non-oxide ceramic using wood as a template. SiC with a woodlike microstructure has been prepared by carbothermal reduction reactions of Tilia wood/TEOS composite at 1873K. The porous carbon preform was
Externí odkaz:
https://doaj.org/article/4e1c5a2f868a4449b8e3cdb530ebec61
Publikováno v:
Science of Sintering, Vol 40, Iss 1, Pp 63-68 (2008)
This paper deals with Nd-doped ceria solid solutions: Ce1-xNdxO2-d with "x" ranging from 0 to 0.25. Six different powders were synthesized by applying the method based on selfpropagating room temperature reaction (SPRT) between metallic nitrates and
Externí odkaz:
https://doaj.org/article/404f43de8a624e9bb8c9c5db740f9a7b
Publikováno v:
Journal of the Serbian Chemical Society, Vol 72, Iss 1, Pp 45-53 (2007)
The microstructural and morphological changes of inert gas atomized pre-alloyed Cu-1 wt.% Al powders subjected to hith-energy milling were studied. The microhardness of hot-pressed compacts was measured as a function of milling time. The thermal stab
Externí odkaz:
https://doaj.org/article/0f345fc6bbe04f3a883ee4959f9153f8