Solid state reactions in nanometer scaled diffusion couples prepared using high energy ball milling

2001 ◽  
Vol 301 (1) ◽  
pp. 90-96 ◽  
Author(s):  
D.L Zhang ◽  
D.Y Ying
Keyword(s):  
Solid State ◽  
Ball Milling ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Solid State Reactions ◽  
Diffusion Couples ◽  
Energy Ball

Solid state reactions between Pd and Si induced by high energy ball milling

1994 ◽  
Vol 9 (1) ◽  
pp. 53-60 ◽  
Author(s):  
D.L. Zhang ◽  
T.B. Massalski
Keyword(s):  
Solid State ◽  
Ball Milling ◽  
Amorphous Phase ◽  
Metastable Phase ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Solid State Reactions ◽  
Scanning Calorimetry ◽  
Energy Ball ◽  
Si Content

Solid state reactions induced by high energy ball milling between Pd and Si have been studied. X-ray diffractometry and differential scanning calorimetry have been used to characterize the resulting phases. During milling, Pd and Si react by diffusion to form different phases depending on the Si content in the starting mixture. With a low Si content of 19 at. %, an amorphous phase forms of the same composition. On continued milling, this amorphous phase partially crystallizes into Pd9Si2 and Pd2Si compounds. With the Si content equal to or higher than 33 at. %, no amorphous phases were observed. Instead, the Pd2Si phase is produced. For powder composition corresponding to the stoichiometric compound Pd2Si (33 at. % Si), the Pd2Si forms and remains stable during further milling. With Si content equal to or higher than 50 at. %, the initially produced Pd2Si is destabilized by a reaction with the remaining Si to form PdSi, which is a metastable phase at the temperature of ball milling. It is very unlikely that an amorphous phase of a composition equal to or higher than 33 at. % Si could be produced by ball milling in the Pd-Si system. This is because the Pd2Si phase forms very easily through the reaction between Pd and Si, and this reaction competes effectively with glass formation.

Effect of graphite additives on solid-state reactions in eutectic Al–Cu powder mixtures during high-energy ball milling

2019 ◽  
Vol 10 (8) ◽  
pp. 2803-2811 ◽  
Author(s):  
Yana Matvienko ◽  
Alexander Rud ◽  
Sergey Polishchuk ◽  
Yuriy Zagorodniy ◽  
Nikolai Rud ◽  
...  
Keyword(s):  
Solid State ◽  
Ball Milling ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Solid State Reactions ◽  
Powder Mixtures ◽  
Energy Ball

Luminescent Properties of LiTaO3:Tm3+, Yb3+ Phosphors Prepared by Ball Milling Method

2013 ◽  
Vol 423-426 ◽  
pp. 426-429
Author(s):  
Xin Ze Wang ◽  
Zhong Xin Liu ◽  
Hong Jian Gao ◽  
Yani Jing ◽  
Chang Lin Li ◽  
...  
Keyword(s):  
Solid State ◽  
Ball Milling ◽  
Solid State Reaction ◽  
Blue Emission ◽  
Photoluminescence Property ◽  
Luminescent Properties ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Conventional Solid State Reaction ◽  
Energy Ball

LiTaO3: Tm3+, Yb3+powders were synthesized by a high-energy ball-milling (HEB) method compared with the conventional solid-state reaction (SSR) method. Under the excitation of 980 nm laser, the strong blue emission (477 nm) band is observed and attributed to1G4-3H6of Tm3+. Because of it causing high local temperature and narrow particles size, increasing the contact area between the particles and improved crystallinity of the host, synthesis by high-energy ball milling show higher photoluminescence (PL) intensity compared to the solid state reaction method. In the process of mechanical milling, Tm3+, Yb3+co-doped LiTaO3phosphors with high photoluminescence property could be achieved at a relatively low reaction temperature.

Facile low temperature solid state synthesis of iodoapatite by high-energy ball milling

RSC Advances ◽  
2014 ◽  
Vol 4 (73) ◽  
pp. 38718-38725 ◽  
Author(s):  
Fengyuan Lu ◽  
Tiankai Yao ◽  
Jinling Xu ◽  
Jingxian Wang ◽  
Spencer Scott ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Solid State ◽  
Low Temperature ◽  
Ball Milling ◽  
Thermal Annealing ◽  
Amorphous Matrix ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Solid State Synthesis ◽  
Energy Ball

High energy ball milled iodoapatite in the form of an amorphous matrix embedded with nanocrystals can be readily crystallized by subsequent low temperature thermal annealing, which greatly improves the thermal stability and iodine confinement.

Sign in / Sign up

Export Citation Format

Share Document