Ara
Toplam kayıt 71, listelenen: 31-40
Effects of cobalt, copper, manganese and titanium oxide additions on the microstructures of zinc containing soft porcelain glazes
(2002)
Different types of glazes, which are nearly all based upon silicate compositions, are used to meet a wide range of requirements in service. Many artistic effects are achieved by departing from a clear, smooth, transparent ...
Crystallisation in the SrO-MgO-ZrO2-SiO2 (SMZS) system glasses
(Kluwer Academic Publ, 2002)
The SrO-MgO-ZrO2-SiO2 quaternary system was first investigated in 1989. It was reported that the lowest liquidus temperature is as similar to1000degreesC and located near the SrO-SiO2 edge of the composition tetrahedron. ...
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 ...
Solid-state ceramic actuator designs
(Amer Inst Aeronaut Astronaut, 2001)
Smart electromeehanical systems consist mainly of sensors, actuators, and data processing units. Actuators are the responding units of many smart systems including those for active vibration control and noise control. ...
Boron nitride-silicon carbide interphase boundaries in silicon nitride-silicon carbide particulate composites
(Elsevier Sci LTD, 2002)
Interphase boundaries between SiC and h-BN grains in hot isostatically pressed Si3N4-SiC particulate composites made from both as-received powders and deoxidised powders, in which sub-micron size h-BN particles occur as a ...
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 ...
a-SiAION ceramics densified with mixed oxide sintering additives
(2000)
Densification and stabilization of ?-sialon ceramics were investigated by using oxides of large cations (Sr2+, La3+, Ce3+, Nd3+) and their equi-molar mixtures with CaO or Yb2O3. All multi-cation and single cation (only ...
Formation mechanisms and morphological changes during the hydrothermal synthesis of BaTiO3 particles from a chemically modified, amorphous titanium (hydrous) oxide precursor
(Elsevier Sci LTD, 2003)
The formation mechanism of BaTiO3 under hydrothermal conditions was investigated. A coprecipitated precursor prepared from chemically modified titanium isopropoxide with acetylacetone and barium acetate was used as a ...
The role of fine alumina and mullite particles on the thermomechanical behaviour of alumina-mullite refractory materials
(Elsevier Science BV, 2002)
Fine grain alumina and mullite particles (approximately 5 mu-m) were incorporated into slip-cast alumina - mullite refractories in order to investigate their effects on the microstructure, mechanical properties and thermal ...
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 ...