scholarly journals Solid State Reactions in Mechanically Alloyed Al-Y alloy with Addition of Metal Oxides.

1999 ◽  
Vol 46 (12) ◽  
pp. 1297-1302 ◽  
Author(s):  
Mamoru Okubo ◽  
Junichi Kaneko ◽  
Mokoto Sugamata
Keyword(s):  
Solid State ◽  
Metal Oxides ◽  
Solid State Reactions ◽  
Mechanically Alloyed

Solid State Reactions in Mechanically Alloyed Al-Li and Al-Li-Mg Alloys with Various Metal Oxides

1998 ◽  
Vol 269-272 ◽  
pp. 157-162 ◽  
Author(s):  
Makoto Sugamata ◽  
Junichi Kaneko ◽  
Hiroyuki Higuchi
Keyword(s):  
Solid State ◽  
Metal Oxides ◽  
Mg Alloys ◽  
Solid State Reactions ◽  
Mechanically Alloyed

Combustion Synthesis of Sr-Substituted LaCo0.4Fe0.6O3 Powders

1992 ◽  
Vol 271 ◽  
Author(s):  
J. J. Kingsley ◽  
L. A. Chick ◽  
G. W. Coffey ◽  
D. E. McCready ◽  
L. R. Pederson
Keyword(s):  
Solid State ◽  
Metal Oxides ◽  
Mixed Oxides ◽  
Electronic Conductivity ◽  
Solid State Reactions ◽  
Bet Surface Area ◽  
Metal Nitrates ◽  
Subsequent Calcination ◽  
Multi Phase ◽  
Sorption Characteristics

ABSTRACTSr-substituted perovskite LaCo0.4Fe0.6O3 is known to have excellent mixed ionic and electronic conductivity and increased O2 sorption characteristics. These perovskites are usually prepared by lengthy solid-state reactions of the component oxides at temperatures near 1150°C, and often produce inhomogeneous, multi-phase powders. Presently, it has been prepared by the calcination of combustion-derived fine mixed oxides at 850°C in 6 hrs. Combustion reactions are carried out using precursor solutions containing the corresponding metal nitrates (oxidizers) and glycine (fuel) at 250°C. The metal oxides produced by this process and subsequent calcination were characterized by XRD, TEM and BET surface area analysis.

Solid-state reactions in mechanically alloyed Al-V powders

1998 ◽  
Vol 78 (5) ◽  
pp. 1021-1035
Author(s):  
F. CARDELLINI V. CONTINI G. MAZZONE
Keyword(s):  
Solid State ◽  
Solid State Reactions ◽  
Mechanically Alloyed

Ceramic colors

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Gerhard Pfaff
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Metal Oxides ◽  
Colloidal Particles ◽  
Solid State Reactions ◽  
Mixed Metal Oxides ◽  
Bone China ◽  
Application Systems ◽  
Ceramic Color ◽  
Gold Silver

Abstract Ceramic colors or stains consist mainly of pigments, glaze or body, and opacifiers. They are used for the decoration of porcelain, earthenware bone china and other ceramics. Glazes and enamels are the main application systems for ceramic colors. Pigments are the color giving components in the composition of a ceramic color. High temperature and chemical stability as well as high tinting strength are characteristics of stains. Technically important ceramic colors are cadmium sulfide and sulfoselenides (occluded in zircon), metals such as gold, silver, platinum, and copper (as colloidal particles), metal oxides (α-Fe2O3, Cr2O3, CuO, Co3O4/CoO, MnO2/Mn2O3, and NiO/Ni2O3), mixed metal oxides and silicates, zirconia-based and zircon-based compositions. Ceramic colors are often produced using solid state reactions.

Distinctive characteristics of solid-state reactions in mechanically alloyed Ti–Al–Si–C powder mixtures

2005 ◽  
Vol 20 (2) ◽  
pp. 375-385 ◽  
Author(s):  
J.B. Zhou ◽  
K.P. Rao
Keyword(s):  
Electron Microscopy ◽  
Solid State ◽  
Powder Mixture ◽  
Energy Dispersive Spectrometry ◽  
Solid State Reactions ◽  
X Ray Diffraction ◽  
Mechanically Alloyed ◽  
Powder Mixtures ◽  
Transmission Electron ◽  
Submicron Scale

Ti–Al–Si–C powder mixtures of two different compositions, namely, 58Ti–30Al–6Si–6C (at.%) and 50Ti–15Al–20Si–15C (at.%), were mechanically alloyed to investigate the solid-state reactions during such a process. The mechanically alloyed powders were characterized as a function of milling time by x-ray diffraction (XRD), scanning electron microscopy, energy-dispersive spectrometry, and transmission electron microscopy (TEM). XRD results showed that solid solutions of Ti were formed for a powder mixture of 58Ti–30Al–6Si–6C in about 20 h of milling, whereas Ti5(Al,Si)3 and Ti(Al,Si)C compounds started to form in the powder mixture of 50Ti–15Al–20Si–15C within just 5 h of milling. TEM observations demonstrated that the particle sizes were of nano and submicron scale in both cases. This investigation indicated that in mechanically alloyed Ti–Al–Si–C powder mixtures, the main solid-state reactions are due to interdiffusion and mechanically induced self-propagating reaction.

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