Crystallization of starting powders of LLZO induced by attrition milling

2019 ◽  
Vol 8 (3) ◽  
pp. 348-353 ◽  
Author(s):  
Xiaojuan Lu ◽  
Rui Wang ◽  
Fanli Meng
Keyword(s):  
Attrition Milling

Intermetallic Effects on the Ductility of Sintered Aluminium

2008 ◽  
Vol 587-588 ◽  
pp. 380-384
Author(s):  
Jesus Cintas ◽  
José A. Rodríguez ◽  
Francicso Gomez Cuevas ◽  
José M. Gallardo
Keyword(s):  
Heat Treatment ◽  
Particle Size ◽  
Intermetallic Particle ◽  
Quantitative Metallography ◽  
Mechanically Alloyed ◽  
Aluminium Powder ◽  
Attrition Milling ◽  
Different Temperatures ◽  
Alloyed Aluminium ◽  
Milled Powders

Mechanically alloyed aluminium powder was prepared by attrition-milling for 10 hours in the presence of a wax. Milled powders were annealed in vacuum at different temperatures (500, 575, 600, 625 and 650°C). Compacts were consolidated starting from unannealed and from 600°Cannealed powders. Studies by SEM microfractography and quantitative metallography, to investigate the influence of Fe-Al intermetallics on compacts fracture, have been carried out. It is concluded that fracture takes place at regions where the area occupied by the intermetallics is high and intermetallics particles are big. Intermetallic particle size can be controlled by an appropriated heat treatment.

scholarly journals Equimolar Yttria-Stabilized Zirconia and Samaria-Doped Ceria Solid Solutions

Ceramics ◽  
2018 ◽  
Vol 1 (2) ◽  
pp. 343-352 ◽  
Author(s):  
Reginaldo Muccillo ◽  
Daniel de Florio ◽  
Eliana Muccillo
Keyword(s):  
Tetragonal Phase ◽  
Room Temperature ◽  
Single Phase ◽  
Rietveld Analysis ◽  
X Ray Diffraction ◽  
Ceramic Powders ◽  
Stabilized Zirconia ◽  
X Ray ◽  
Ceria Solid Solutions ◽  
Attrition Milling

Compositions of (ZrO2)0.92(Y2O3)0.08 (zirconia: 8 mol % yttria—8YSZ) and (CeO2)0.8(Sm2O3)0.2 (ceria: 20 mol % samaria—SDC20) ceramic powders were prepared by attrition milling to form an equimolar powder mixture, followed by uniaxial and isostatic pressing. The pellets were quenched to room temperature from 1200 °C, 1300 °C, 1400 °C and 1500 °C to freeze the defects configuration attained at those temperatures. X-ray diffraction analyses, performed in all quenched pellets, show the evolution of the two (8YSZ and SDC20) cubic fluorite structural phases to a single phase at 1500 °C, identified by Rietveld analysis as a tetragonal phase. Impedance spectroscopy analyses were carried out in pellets either quenched or slowly cooled from 1500 °C. Heating the quenched pellets to 1000 °C decreases the electrical resistivity while it increases in the slowly cooled pellets; the decrease is ascribed to annealing of defects created by lattice micro-tensions during quenching while the increase to partial destabilization of the tetragonal phase.

Effects of Attrition Milling on Air Classification Properties of Hard Wheat Flours

1988 ◽  
Vol 40 (3) ◽  
pp. 100-104 ◽  
Author(s):  
F. W. Sosulski ◽  
D. M. Nowakowski ◽  
R. D. Reichert
Keyword(s):  
Air Classification ◽  
Hard Wheat ◽  
Attrition Milling ◽  
Wheat Flours

Improvement of barium titanate properties induced by attrition milling

2012 ◽  
Vol 38 (7) ◽  
pp. 5347-5354 ◽  
Author(s):  
M.M. Vijatović Petrović ◽  
J.D. Bobić ◽  
A.M. Radojković ◽  
J. Banys ◽  
B.D. Stojanović
Keyword(s):  
Barium Titanate ◽  
Attrition Milling

scholarly journals Reduction in Processing Time in Ca3Co4O9+δ Ceramics through Nanoprecursors Produced by an Easily Scalable and Environmentally Friendly Process

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2533
Author(s):  
Hippolyte Amaveda ◽  
Maria A. Madre ◽  
Mario Mora ◽  
Miguel A. Torres ◽  
Andres Sotelo
Keyword(s):  
Processing Time ◽  
Environmentally Friendly ◽  
Milling Process ◽  
Solid State Method ◽  
Grain Sizes ◽  
Attrition Milling ◽  
Environmentally Friendly Process ◽  
Short Time ◽  
Power Factor Improvement ◽  
Sintered Materials

Attrition milling is an easily scalable and environmentally friendly process used to produce Ca3Co4O9+δ nanoprecursors in a relatively short time. Sintered materials produced through the classical solid-state method, involving ball milling, show much larger grain sizes and slightly lower density than those obtained in samples produced from attrition-milled precursors. On the other hand, electrical resistivity has been drastically decreased, accompanied with a slight decrease in the Seebeck coefficient in samples obtained from these attrition-milled precursors. Moreover, the use of an attrition milling process leads to a very important reduction in processing time (around 75%), together with a slight power factor improvement of around 10%, when compared to the classically prepared samples.

The influence of attrition milling on carbon dioxide sequestration on magnesium–iron silicate

2010 ◽  
Vol 23 (8) ◽  
pp. 616-620 ◽  
Author(s):  
Martin Fabian ◽  
Maya Shopska ◽  
Daniela Paneva ◽  
Georgi Kadinov ◽  
Nina Kostova ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Sequestration ◽  
Iron Silicate ◽  
Attrition Milling

Study of YSZ/Al2O3 Composite Coatings Produced by Electrophoretic Deposition

2012 ◽  
Vol 538-541 ◽  
pp. 386-390
Author(s):  
Xiao Juan Lu
Keyword(s):  
Mechanical Properties ◽  
Milling Time ◽  
Particle Distribution ◽  
Composite Coatings ◽  
Deposition Process ◽  
Gradient Structure ◽  
Constraint Effect ◽  
Attrition Milling ◽  
Al2o3 Composite ◽  
Different Temperatures

YSZ/Al2O3 composite coatings have been fabricated by using EPD. The microstructures, mechanical properties and micro-stresses of the coatings produced from different sized powders and sintered at different temperatures have been studied. Different attrition milling time leads to different particle distribution modes, thereby different microstructures. Due to the deposition process and the constraint effect from the substrate, a gradient structure has been formed across the coating thickness.

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