Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Heino Sieber"'
Publikováno v:
Journal of Porous Materials. 28:157-163
This work reports the synthesis of biomorphic ZrC/C ceramics derived from rattan through infiltration of a Zr-containing salt and further carbothermal reduction of ZrO2. Discs of dried in natura rattan were first pyrolyzed at 800 °C in nitrogen to f
Autor:
Geneviève K. Pinheiro, Heino Sieber, Daliana Müller, Carlos R. Rambo, Larissa S. Marques, Joseane C. Bernardes
Publikováno v:
Metallography, Microstructure, and Analysis. 9:636-640
This work reports a simple way of producing metallic Al as a product of the metallothermic reduction of Al2O3 by metallic Ti at 1600 °C. A porous carbon template (derived from rattan) was used here to capture the Al released from the interfacial rea
Publikováno v:
Exacta. 4:297-308
Publikováno v:
Journal of Porous Materials. 15:419-425
Biomorphic α/β-Si3N4 composites were produced from natural sea sponge via replication method. The sponges were impregnated with a Si-containing slurry via dip-coating. After coating, the sponges were submitted to oxidation at 600°C for 1 h to deco
Autor:
Carlos R. Rambo, Antonio Eduardo Martinelli, Dulce Maria de Araújo Melo, T. E. Andrade Jr., Heino Sieber
Publikováno v:
Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
A conversão de materiais ligninocelulósicos em cerâmicas biomórficas tem despertado particular interesse, por tratar-se de uma nova classe de materiais cerâmicos de alto valor agregado, produzidos a partir de matérias-primas de baixo custo e re
Autor:
Juergen M. Bauer, Heino Sieber, Thangaraj Selvam, Peter Greil, Tobias Fey, S. Kullmann, Wilhelm Schwieger, Alessandro Zampieri
Publikováno v:
Microporous and Mesoporous Materials. 90:162-174
In the present article, a three-step process for the preparation of SiSiC/zeolite composites is presented. Rattan-derived SiSiC composites were obtained via a two-step biotemplating liquid silicon infiltration process (LSI). The LSI process, consisti
Publikováno v:
Materials Science and Engineering: C. 26:92-99
Highly porous Al2O3 scaffolds were prepared from natural cellulosic sponges via pyrolysis and Al-vapour phase infiltration. Subsequent oxidation and sintering in air resulted in porous Al2O3 ceramics with an open cellular morphology and a total poros
Autor:
Ralph Hermann, Peter Greil, Wilhelm Schwieger, G.T.P. Mabande, Heino Sieber, Alexander Rudolph, Thangaraj Selvam, Alessandro Zampieri
Publikováno v:
Materials Science and Engineering: C. 26:130-135
Biomorphic self-supporting MFI-type zeolite frameworks with hierarchical porosity and complex architecture were prepared using a 2-step (in-situ seeding and secondary crystal growth) hydrothermal synthesis in the presence of a biological template (Lu
Publikováno v:
Exacta, Vol 4, Iss 2, Pp 297-308 (2006)
Biotemplating is the processing of microcellular ceramics by reproduction of natural morphologies, where the microstructural features of the biotemplate are maintained in the biomorphic ceramic. Different biotemplates with distinct pore anatomies wer
Autor:
Heino Sieber
Publikováno v:
Materials Science and Engineering: A. 412:43-47
The processing of biomorphous ceramics and ceramic composites represents an advanced concept for manufacturing of porous or dense ceramic materials with microcellular morphologies. The cellular anatomy of naturally grown plants as well as there deriv