Yazar "Herrmann, M." için listeleme
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Densificaron of Sr-Mg doped SiAlONs with GPS and SPS
Kurama, Semra; Herrmann, M. (2007)At temperature above 1200°C, the thermal stability of ?-SiAlON phases has been debated since 1992; however, it has been discussed if any ?-SiAlON phase can be formed in Ce, La, Eu and Sr-doped SiAlON systems. In our previous ... -
Densification of Sr-Mg doped SiAlONs with GPS and SPS
Kurama, Semra; Herrmann, M. (Trans Tech Publications LTD, 2007)At temperature above 1200 degrees C, the thermal stability of alpha-SiAlON phases has been debated since 1992; however, it has been discussed if any alpha-SiAlON phase can be formed in Ce, La, Eu and Sr-doped SiAlON systems. ... -
The design of compositions for multi-cation doped ?-ß SiAlON ceramics by the Rietveld method
Kurama, Semra; Herrmann, M.; Mandal, Hasan (2003)Although densification of ?-ß-SiAlON ceramics is easier by using sintering additives, it is difficult to achieve the designed composition and therefore the mechanical properties after sintering. This is mainly due to the ... -
Improvement of elongated ?-SiAlON ceramics by variation of the processing conditions and amounts of additives
Kurama, Semra; Herrmann, M.; Mandal, Hasan (2001)Two types of Y-?-SiAlON composition, with different amounts of additional liquid phase were densified in a gas pressure sintering furnace using three different sintering cycles. One series of samples was heated up to 1825°C ... -
Wear behaviour of alpha- and alpha/beta-SiAlON ceramics stabilized with Nd2O3 and Y2O3
Kurama, Semra; Schulz, I.; Herrmann, M. (Elsevier Sci LTD, 2009)alpha- and alpha/beta-SiAlON compositions, doped with Y2O3 or Nd2O3, were densified by gas pressure sintering (GPS). The wear and mechanical properties of the materials were investigated and compared to beta-Si3N4 materials. ... -
Wear properties of alpha- and alpha/beta-SiAlON ceramics obtained by gas pressure sintering and spark plasma sintering
Kurama, Semra; Schulz, I.; Herrmann, M. (Elsevier Sci LTD, 2011)In this study, alpha- and alpha/beta-SiAlON materials, doped with Y(2)O(3) and Nd(2)O(3), were sintered using two different sintering processes: spark plasma sintering (SPS) and gas pressure sintering (GPS). The wear and ...
