The role of hydrogen and iron in silicon nitridation by ball milling

1997 ◽  
Vol 81 (12) ◽  
pp. 8029-8034 ◽  
Author(s):  
Z. L. Li ◽  
J. S. Williams ◽  
A. Calka
Keyword(s):  
Ball Milling ◽  
Silicon Nitridation

scholarly journals Role of disorder in limiting the true multi-electron redox in ε-LiVOPO4

2018 ◽  
Vol 6 (42) ◽  
pp. 20669-20677 ◽  
Author(s):  
Jatinkumar Rana ◽  
Yong Shi ◽  
Mateusz J. Zuba ◽  
Kamila M. Wiaderek ◽  
Jun Feng ◽  
...  
Keyword(s):  
Ball Milling ◽  
Side Reactions

Ball-milling-induced disorder and defects impede multi-electron redox in ε-LiVOPO4 and trigger side reactions.

(Rapid) Thermal Nitridation of SiO2 films

1989 ◽  
Vol 146 ◽  
Author(s):  
J.B. Oude Elferink ◽  
F.H.P.M. Habraken ◽  
W.F. van der Weg
Keyword(s):  
Activation Energy ◽  
Silicon Dioxide ◽  
Effective Activation Energy ◽  
Effective Activation ◽  
Nitrogen Incorporation ◽  
Nitridation Process ◽  
Initial Stage ◽  
Thermal Nitridation ◽  
Silicon Nitridation

ABSTRACTIn this paper we report on the composition of thermally nitrided silicon dioxide films on silicon. Nitridation temperatures ranging from 950 to 1150ºC and nitridation times ranging from 10 to 240 s were used. The purpose of this study is to reveal the mechanisms involved in the nitridation process with emphasis on the role of hydrogen. From the temperature dependence of the amount of nitrogen in the films the effective activation energy for nitrogen incorporation in this initial stage was deduced.

Hydrogen Desorption Reactions of the Na-Mg-B-H System

2010 ◽  
Vol 72 ◽  
pp. 164-169 ◽  
Author(s):  
Daphiny Pottmaier ◽  
Sebastiano Garroni ◽  
Maria Dolors Barò ◽  
Marcello Baricco
Keyword(s):  
Solid State ◽  
Research And Development ◽  
Ball Milling ◽  
Powder Diffraction ◽  
Hydrogen Desorption ◽  
X Ray ◽  
New Compounds ◽  
Desorption Reaction

Hydrogen storage in the solid state has shown increasing research and development, and recently an approach in mixing two hydride systems together by ball milling (reactive hydride composites) has been investigated in more detail, e.g. NaBH4 plus MgH2. Thermodynamic destabilization may occur by new compounds formation during dehydrogenation, e.g. MgB2. A study of the the role of O2/H2O contamination for the reaction 2NaBH4 + MgH2 ↔ 2NaH + MgB2 + 4H2 was conducted using in-situ X-ray powder diffraction. Desorption reaction is observed to begin by a competition of MgH2 and NaBH4 decomposition due to higher reactivity promoted by ball milling processing summed to O2/H2O contamination. Oxidation of NaBH4 into NaBO2 is observed to happen in higher degree than MgH2/Mg into MgO for the Na-Mg-B-H system.

Mechanism of Enhanced Carbon Substitution in CNT-MgB2 Superconductor Composite Using Ball Milling in a Methanol Medium: Positive Role of Boron Oxide

2017 ◽  
Vol 31 (4) ◽  
pp. 1119-1126 ◽  
Author(s):  
Fahad Saad Alghamdi ◽  
M. Shahabuddin ◽  
Nasser S. Alzayed ◽  
Niyaz Ahamad Madhar ◽  
Jafar M. Parakkandy ◽  
...  
Keyword(s):  
Ball Milling ◽  
Boron Oxide ◽  
Mgb2 Superconductor ◽  
Positive Role ◽  
Carbon Substitution ◽  
Methanol Medium

Cr(VI) removal by micron-scale iron-carbon composite induced by ball milling: The role of activated carbon

2020 ◽  
Vol 389 ◽  
pp. 122633 ◽  
Author(s):  
Wenhao Wang ◽  
Bibo Hu ◽  
Chuang Wang ◽  
Zhijie Liang ◽  
Fuyi Cui ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Ball Milling ◽  
Carbon Composite
Sign in / Sign up

Export Citation Format

Share Document