Ara
Toplam kayıt 2236, listelenen: 281-290
The effect of heat-treatment on the performance of sub-micron SiCp-reinforced alpha-beta sialon composites .2. Heat-treatment studies
(Elsevier Sci LTD, 1997)
The effects of heat-treatment on alpha --> beta sialon transformation in dense, agglomerate-free Ln-sialon/SiCp(Ln=Nd,Yb) composites are reported. The stability of the alpha-sialon phase is not only dependent on the ...
Melting behaviour of glasses in the SrO-MgO-ZrO2-SiO2 system
(Soc Glass Technology, 1999)
In the SrO-MgO-ZrO2-SiO2 system a large range of compositions with 60, 55, 50, 45, 40 and 35 wt% silica has been thoroughly investigated The effect of silica and other constituents on melting, annealing and colour variations ...
Influence of sample thickness on the performance of photostrictive ceramics
(Amer Inst Physics, 1998)
Ferroelectric materials with high photovoltaic properties are of interest for new optical devices such as photostrictive ceramic actuators. However, fabrication of these devices requires development of materials exhibiting ...
Piezoelectric hollow spheres for microprobe hydrophones
(Taylor & Francis LTD, 1999)
Miniature hollow spheres of lead zirconate titanate have been prepared with a coaxial nozzle process using fine grain slurry of PZT-5. Following the binder burnout and sintering, the spheres were poled radially and ...
Interphase boundaries between hexagonal boron nitride and beta silicon nitride in silicon nitride-silicon carbide particulate composites
(1997)
Inter phase boundaries between hexagonal boron nitride and Q-Si3N4 in hot isostatically pressed Si3N4-SiC particulate composites, in which boron nitride appears as a trace contaminant, have been examined using high resolution ...
Lichens of the Akşehir disatrict (Konya)
(1998)
Konya ili, Akşehir ilçesinde yapılan çalışmada 33 cinse ait 89 liken türü belirlenmiştir. Bu türlerden Staurothele frustulenta Vainio Türkiye Liken Florası için yeni kayıttır.
Optimization and improvement of sialon ceramics with new heat treatment techniques
(1997)
Sialons are of interest for use as engineering materials for high temperature (>1000°C) applications becuase they retain good mechanical properties at these temperatures, whereas competing metallic materials are weak and ...
alpha ->beta sialon transformation in calcium-containing alpha-SiAlON ceramics
(Elsevier Sci LTD, 1999)
Recent studies on rare earth densified a-sialon ceramics have shown that the resulting alpha-sialon product, present either as a single phase or in conjunction with beta-sialon, is unstable when heat treated at lower ...
Microstructural characterization of surface layers formed on a low alloy steel during erosion - oxidation in a fluidized bed
(Chapman Hall LTD, 1997)
Low alloy steel specimens were subjected to erosion-oxidation in a simulated fluidized bed environ ment in the range 100-600 degrees C. Transmission electron microscopy was carried out on the surfaces which experienced ...
The effects of n-ras oncogene expression on PDGF-BB stimulated responses in cultured mouse myoblasts
(1995)
The role of the ras oncogene in the signalling pathway triggered by platelet-derived growth factor BB (PDGF-BB) has been investigated in a cell line which normally differentiates into myotubes. Following the activation of ...