An advanced method to manufacture hierarchically structured carbide-derived carbon monoliths
An advanced method to manufacture hierarchically structured carbide-derived carbon monoliths
复制标题
一种制造分级结构的碳化物衍生碳块的先进方法
DOI:
10.1016/j.carbon.2013.12.052
复制
发表时间:
2014
期刊:
影响因子:
10.9
通讯作者:
B.J.M. Etzold
中科院分区:
文献类型:
--
作者:
T. Fey;B. Zierath;A. Kern;P. Greil;B.J.M. Etzold
The preparation of carbide-derived carbon (CDC) monoliths with a hierarchically structure in the nm and μm range is presented. Basis is the manufacturing of porous cellular SiC ceramics based on a biomorphous approach with μm porosity and subsequent conformal conversion to CDC by reactive extraction with chlorine. The SiC ceramics can be sintered at low temperatures and short times (1500 °C, 2 h) compared to classical preparation methods. The SiC ceramics show a macro pore volume (1–10 μm channel size) of 0.56 ml g−1, which corresponds to 1.5 ml g−1in the resulting CDC. The final carbon material exhibits an additional nano pore volume of 0.525 ml g−1with a mean slit pore size of 0.86 nm. Mechanical stabilities of the highly porous CDC are excellent (bending strength 2.1 ± 0.2 MPa, corrected Weibull modulus 8.7, characteristic strength 2.2 MPa and Youngs modulus 10.0 ± 0.5 GPa). The reactive extraction of the carbide monoliths shows very high reaction rates, approx. two dimensions faster (95×) compared to non-porous samples. Thus the manufacturing of the structured carbide and CDC can be performed at lower costs.
登录
查看更多内容
影响因子:
4.5
作者:
Seung Kun Lee;Y. Kim;C. Kim
通讯作者:
Seung Kun Lee;Y. Kim;C. Kim
影响因子:
3.9
作者:
Jänes, A;Lust, E
通讯作者:
Lust, E
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
L. Borchardt;M. Oschatz;Martin R. Lohe;V. Presser;Y. Gogotsi;S. Kaskel
通讯作者:
S. Kaskel
DOI:
--
发表时间:
1988
期刊:
影响因子:
--
作者:
M. Omori;H. Takei
通讯作者:
H. Takei
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
T. Knorr;F. Strobl;F. Glenk;B. Etzold
通讯作者:
B. Etzold