Effect of Attritor Milling on Synthesis and Sintering of Forsterite Ceramics

2016 ◽  
Vol 13 (4) ◽  
pp. 726-735
Author(s):  
Yoke Meng Tan ◽  
Chou Yong Tan ◽  
Singh Ramesh ◽  
Yee Ching Teh ◽  
Yew Hong Wong ◽  
...  
Keyword(s):  
Attritor Milling

Si 3 N 4 /graphene nanocomposites for tribological application in aqueous environments prepared by attritor milling and hot pressing

2017 ◽  
Vol 37 (12) ◽  
pp. 3797-3804 ◽  
Author(s):  
Csaba Balázsi ◽  
Zsolt Fogarassy ◽  
Orsolya Tapasztó ◽  
Andreas Kailer ◽  
Christian Schröder ◽  
...  
Keyword(s):  
Hot Pressing ◽  
Graphene Nanocomposites ◽  
Tribological Application ◽  
Aqueous Environments ◽  
Attritor Milling

Microstructure Formation and Performance of Reactive Sintered Titanium Oxycarbide Base Ceramic-Ceramic Composites

2019 ◽  
Vol 799 ◽  
pp. 131-135
Author(s):  
Kristjan Juhani ◽  
Jakob Kübarsepp ◽  
Marek Tarraste ◽  
Jüri Pirso ◽  
Mart Viljus
Keyword(s):  
Phase Formation ◽  
Mechanical Performance ◽  
Aluminium Oxide ◽  
High Energy ◽  
Ceramic Composites ◽  
Oxide Ceramic ◽  
Reactive Sintering ◽  
Attritor Milling ◽  
Different Temperatures ◽  
And Performance

Reactive sintering is a process where synthesis reaction of the ceramic phases is combined with sintering (densification) of the composite. Dense lightweight titanium oxycarbide-aluminium oxide ceramic-ceramic composites were produced from titanium dioxide, carbon black as graphite source and aluminium precursors by high energy attritor milling, followed by reactive sintering. Titanium oxycarbide and aluminium oxide phases were synthesized during reactive sintering in situ. To investigate the microstructure evolution and phase formation, the specimens were sintered at different temperatures (600-1725 °C) in vacuum. Scanning electron microscopy and X-ray diffraction were used to analyze the microstructure and phase formation. Mechanical performance (hardness and fracture toughness) was evaluated.

Bonded Sm–Fe–(Ta)–N materials produced via attritor milling and HDDR

1999 ◽  
Vol 289 (1-2) ◽  
pp. 265-269 ◽  
Author(s):  
K Žužek ◽  
P.J McGuiness ◽  
S Kobe
Keyword(s):  
Attritor Milling

The production of a Nd-Fe-B permanent magnet by a hydrogen decrepitation/attritor milling route

1986 ◽  
Vol 21 (11) ◽  
pp. 4107-4110 ◽  
Author(s):  
P. J. McGuiness ◽  
I. R. Harris ◽  
E. Rozendaal ◽  
J. Ormerod ◽  
M. Ward
Keyword(s):  
Permanent Magnet ◽  
Attritor Milling ◽  
Hydrogen Decrepitation

Anaerobic vs. aerobic preparation of silicon nanoparticles by stirred media milling. The effects of dioxygen, milling solvent, and milling time on particle size, surface area, crystallinity, surface/near-surface composition, and reactivity

RSC Advances ◽  
2016 ◽  
Vol 6 (113) ◽  
pp. 112370-112380
Author(s):  
Eric V. Bukovsky ◽  
Karlee P. Castro ◽  
Brent M. Wyatt ◽  
Olga V. Boltalina ◽  
Steven H. Strauss
Keyword(s):  
Particle Size ◽  
Surface Area ◽  
Silicon Nanoparticles ◽  
Milling Time ◽  
Surface Composition ◽  
Near Surface ◽  
Media Milling ◽  
Attritor Milling

Silicon nanoparticles milled anaerobically in heptane or mesitylene are smaller and much more reactive than SiNPs milled aerobically in the same solvents for equal attritor milling times.

scholarly journals Effect of Short Attritor-Milling of Magnesium Alloy Powder Prior to Spark Plasma Sintering

Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 3973
Author(s):  
Peter Minárik ◽  
Mária Zemková ◽  
Michal Knapek ◽  
Stanislav Šašek ◽  
Jan Dittrich ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Magnesium Alloy ◽  
Spark Plasma Sintering ◽  
Alloy Powder ◽  
Mechanical Performance ◽  
Milled Powder ◽  
Plasma Sintering ◽  
Attritor Milling ◽  
Spark Plasma ◽  
Superior Mechanical Properties

The spark plasma sintering (SPS) technique was employed to prepare compacts from (i) gas-atomized and (ii) attritor-milled AE42 magnesium powder. Short attritor-milling was used mainly to disrupt the MgO shell covering the powder particles and, in turn, to enhance consolidation during sintering. Compacts prepared by SPS from the milled powder featured finer microstructures than compacts consolidated from gas-atomized powder (i.e., without milling), regardless of the sintering temperatures in the range of 400–550 °C. Furthermore, the grain growth associated with the increase in the sintering temperature in these samples was less pronounced than in the samples prepared from gas-atomized particles. Consequently, the mechanical properties were significantly enhanced in the material made of milled powder. Apart from grain refinement, the improvements in mechanical performance were attributed to the synergic effect of the irregular shape of the milled particles and better consolidation due to effectively disrupted MgO shells, thus suppressing the crack formation and propagation during loading. These results suggest that relatively short milling of magnesium alloy powder can be effectively used to achieve superior mechanical properties during consolidation by SPS even at relatively low temperatures.

scholarly journals Microstructure and Mechanical Strength of Attritor-Milled and Spark Plasma Sintered Mg-4Y-3Nd Alloy

Crystals ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 574
Author(s):  
Mária Zemková ◽  
Peter Minárik ◽  
Michal Knapek ◽  
Stanislav Šašek ◽  
Jan Dittrich ◽  
...  
Keyword(s):  
Grain Size ◽  
Yield Strength ◽  
Mechanical Strength ◽  
Milled Powder ◽  
Secondary Phase ◽  
Size Refinement ◽  
Attritor Milling ◽  
Spark Plasma ◽  
Powder Particles ◽  
Microscopy Techniques

Gas-atomized powder of an Mg-4Y-3Nd magnesium alloy was attritor-milled at room temperature in an argon atmosphere for two time periods—1.5 and 5 h. Subsequently, the gas-atomized powder as well as both of the milled powders were spark plasma sintered at four temperatures, 400, 450, 500, and 550 °C, for 3 min. The effect of the milling on the powder particles’ morphology and the microstructure of the consolidated samples were studied by advanced microscopy techniques. The effect of the microstructural changes, resulting from the pre-milling and the sintering temperature, on the mechanical strength was investigated in compression along and perpendicular to the sintering load direction. Both the compression yield strength and ultimate compression strength were significantly affected by the grain size refinement, residual strain, secondary phase particles, and porosity. The results showed that attritor-milling imposed severe deformation to the powder particles, causing a significant grain size refinement in all of the consolidated samples. However, 1.5 h of milling was insufficient to achieve uniform refinement, and these samples also exhibited a distinctive anisotropy in the mechanical properties. Only a negligible anisotropy and superior yield strength were observed in the samples sintered from 5 h milled powder, whereas the ultimate strength was lower than that of the samples sintered from the gas-atomized powder.

Effect of attritor milling on the densification of magnesium aluminate spinel

1999 ◽  
Vol 25 (5) ◽  
pp. 485-489 ◽  
Author(s):  
Ritwik Sarkar ◽  
Samir Kumar Das ◽  
Goutam Banerjee
Keyword(s):  
Magnesium Aluminate ◽  
Magnesium Aluminate Spinel ◽  
Attritor Milling

Attritor Milling of Carbide-Binder Systems

1991 ◽  
Vol 29-31 ◽  
pp. 545-554
Author(s):  
D.R. Upadhye ◽  
D.M. Deo ◽  
S. Basu ◽  
V. Gopinathan ◽  
P. Ramakrishnan
Keyword(s):  
Attritor Milling
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