Journal of Materials Synthesis and Processing
SCOPUS (1994-2002)
1573-4870
1064-7562
Cơ quản chủ quản: N/A
Phân tích ảnh hưởng
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Mechanochemical Synthesis of Double Hydroxides
Tập 8 - Trang 251-253 - 2000
It has been demonstrated that the formation of magnesium-aluminium double
hydroxides [Mg(1 − X)Al X (OH)2] X+(A n− X/n ) • m H2O, (A–Cl−, NO− 3, SO2− 4)
occurs during mechanical activation of the mixture of magnesium hydroxide
(brucite) with aluminium chloride, nitrate and sulphate in high-energy
planetary-type activators. The effect of activation time on the formation of the
double hydroxide has ...
Conversion of the Echinoderm Mellita eduardobarrosoi Calcite Skeleton into Porous Hydroxyapatite by Treatment with Phosphated Boiling Solutions
Tập 7 - Trang 211-219 - 1999
The influence of the boiling solution technique (a nonhydrothermal wet
treatment) in the formation of hydroxyapatite (HA) from a novel source, an
echinoderm known as Mellita eduardobarrosoi, whose skeleton contains calcite as
an inorganic constituent, was investigated. The experimental plan explores the
conversion using a batch boiling system composed of KH2PO4 + KOH aqueous
solutions at initial p...
MSR Reduction of Hexachlorobenzene
Tập 8 - Trang 295-300 - 2000
This paper deals with the mechanochemical degradation of hexachlorobenzene over
Li, Na, K, Mg, Ca, Ba, Ti, and W. Apart from the mixtures containing Ti and W,
the other systems react in a combustive mode leading to the chlorides and the
carbides of the inorganic substrates. Reaction stoichiometries and heats were
experimentally determined. The activation time required to ignite the reaction
decrea...
Combustion Synthesis of Glass (B2O3-Al2O3-MgO)-Ceramic (TiB2) Composites
Tập 10 - Trang 163-174 - 2002
The combustion synthesis, or self-propagating high temperature synthesis (SHS),
technique has been used to produce glass ceramic composites that have a glass
matrix based on B2O3-MgO-Al2O3and a crystalline ceramic phase of TiB2.
Conditions for producing glassy materials by the SHS technique are discussed and
the thermodynamics of these combustion reactions are analyzed. The combustion
characterist...
Reaction Bonding of Three-Layer Alumina-Based Composites
Tập 7 - Trang 195-203 - 1999
Three-layer alumina-based composites with Al2O3-containing mullite as the outer
layer and ZrO2-containing alumina as the inner layer were fabricated by
die-pressing and reaction bonding. The effects of the outer-layer compositions
on the densification behavior of three-layer composites were investigated. The
existence of residual stresses in the layers was verified using indentation
methods. Compa...
Chemical Durability of Waste Fluorescent Glass and Shell–Derived Glass-Ceramics
Tập 10 - Trang 37-42 - 2002
In order to obtain glass-ceramics reinforced by β-wollastonite, pressed
specimens prepared by powdered waste fluorescent glass and refuse shell dumped
in the seashore were heat-treated at 800°C, 900°C, and 1000°C. Chemical
stability of the heat-treated specimens was analyzed by weight changes and by
observation of surface morphology and composition, by field-emission scanning
electron microscopy a...
Comparison Between γ-Bi2MoO6 and Bi2WO6 Catalysts in the CO Oxidation
Tập 9 - Trang 207-212 - 2001
Bismuth molybdate (γ-Bi2MoO6) and bismuth tungstate (Bi2WO6) catalysts were
prepared by solid-state reaction and their catalytic properties evaluated in the
CO oxidation reaction. We characterize their structure by X-ray diffraction,
scanning electron microscopy, Auger electron spectroscopy, and BET nitrogen
absorption. X-ray diffraction analysis shows that both γ-Bi2MoO6 and Bi2WO6 are
structural...
Synthesis of TiC Whiskers through Carbothermal Reduction of TiO2
Tập 9 - Trang 1-10 - 2001
TiC whiskers were produced through carbothermal reduction of TiO2 in the
presence of potassium (K2CO3) and nickel (NiCl2). The effect of potassium,
nickel, and heating rate on the formation of whiskers was studied. Potassium was
found to be an essential constituent for whisker formation. Nickel acts as a
catalyst for TiC whisker formation only in the presence of potassium. The yield
of whiskers wa...
Highly Crystalline Y3Fe5O12 Thin Films by Cictric Spray Pyrolysis
Tập 10 - Trang 283-288 - 2002
Ethylene glycol solution of mixed-metal Y(III)-Fe(III) citric complexes has been
used as a starting material for a spray pyrolysis deposition of Y3Fe5O12 (YIG)
thin films on silica and on single crystal Y3Al5O12 (YAG) substrates heated up
to 500°C. O2 was used as a carrier gas. A post-deposition thermal annealing at
800–1100°C was applied. Films of 0.1–1.2 μm in thickness were obtained. Their
comp...
Mass Spectrometric Observations of Enhanced Rates of Association Reactions: nLiF = Li n F n (n = 2, 3) at LiF Single Crystal Surfaces
Tập 7 - Trang 113-118 - 1999
A mass spectrometric method was used to study the kinetics of lithium fluoride
single-crystal sublimation. In electron impact ionization mass spectra, Li+,
LiF+, Li2F+, and Li3 F 2 + ions originating from monomer (LiF), dimer (Li2F2),
and trimer (Li3F3) molecular precursors were detected in the temperature range
970–1070 K. The dimer-to-monomer and trimer-to-monomer flux ratios were found to
incre...