Synthesis and thermal stability of (Co,Ni)O solid solutions

2019 ◽  
Vol 102 (9) ◽  
pp. 5063-5070 ◽  
Author(s):  
Saeed Mohammadkhani ◽  
Emmanuel Schaal ◽  
Ali Dolatabadi ◽  
Christian Moreau ◽  
Boyd Davis ◽  
...  
1987 ◽  
Vol 70 (2) ◽  
pp. 69-71 ◽  
Author(s):  
MASAYUKI ISHITSUKA ◽  
TSUGIO SATO ◽  
TADASHI ENDO ◽  
MASAHIKO SHIMADA

2017 ◽  
Vol 62 (8) ◽  
pp. 685-691
Author(s):  
V.M. Nadutov ◽  
◽  
A.Ye. Perekos ◽  
V.Z. Voinash ◽  
V.P. Zalutskiy ◽  
...  

1999 ◽  
Vol 14 (5) ◽  
pp. 1760-1770 ◽  
Author(s):  
H. G. Jiang ◽  
H. M. Hu ◽  
E. J. Lavernia

The synthesis of nanocrystalline Fe, Fe–4 wt% Al, and Fe–10 wt% Al solid solutions by SPEX ball milling has been studied. The microstructural evolution during ball milling, as well as subsequent heat treatment, has been characterized. The results demonstrate that ball milling promotes the formation of αFe–4 wt% Al and αFe–10 wt% Al solid solutions by reducing the activation energy of these alloys and generating thermal energy during this process. For Fe–10 wt% Al powders milled for various time intervals up to approximately 20 min, the FeAl intermetallic compound is formed. For alloys annealed at temperatures ranging from 600 to 1000 °C, the addition of 10 wt% Al to Fe significantly enhances the thermal stability of the nanocrystalline Fe–Al alloys. Interestingly, the addition of Al within the range of 4–10 wt% seems to have little effect on the thermal stability of these alloys annealed under the same conditions. Also, the thermal stability improves for alloys milled in air as opposed to those processed using Ar.


1986 ◽  
Vol 17 (21) ◽  
Author(s):  
A. BIGI ◽  
M. GAZZANO ◽  
A. RIPAMONTI ◽  
E. FORESTI ◽  
N. ROVERI

2012 ◽  
Vol 182-183 ◽  
pp. 122-125
Author(s):  
Li Li Wang ◽  
Xiu Feng Wang ◽  
Cheng Long Yu ◽  
Hong Tao Jiang

Hydroxyapatite (HA) was synthesized in presence of 20wt% m-ZrO2by solid state reaction between tricalcium phosphate(TCP) and Ca(OH)2at 1000 °C for 2h. Similarily, Fluorine hydroxyapatite(FA) was synthesized using tricalcium phosphate and calcium fluoride as raw materials at 1000 °Cfor 3h. The as-prepared HA was mixed with 10%,25%,45%,55%,70wt% FA and the mixture was sintered at 1000°C-1400°C for 2h. The main phase and bulk density was measured. The results show that when the relative amount of FA to HA increased, the decomposition of the composite is decreased gradually because of the formation of thermally stable FHA solid solutions. Low temperature would effect the exchange of ionic between FA and HA,while high temperature would impact synthesis of composites, because high temperature would lead to dissolution of HA ,which has to react with FA. Increase the content of HA would be advantage for synthesis FHA-ZrO2composite.


Author(s):  
Adriana Bigi ◽  
Massimo Gazzano ◽  
Alberto Ripamonti ◽  
Elisabetta Foresti ◽  
Norberto Roveri

ChemInform ◽  
2010 ◽  
Vol 24 (28) ◽  
pp. no-no
Author(s):  
E. G. ZHUKOV ◽  
E. S. POLULYAK ◽  
G. S. VARNAKOVA ◽  
V. A. FEDOROV

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