Synthesis of Ti3SnC2–Al2O3 composite by mechanical alloying and subsequent heat treatment

2021 ◽  
Author(s):  
Yan Cao ◽  
Majid Zarezadeh Mehrizi ◽  
Ali A. Rajhi ◽  
Sagr Alamri ◽  
Ali E. Anqi
Keyword(s):  
Heat Treatment ◽  
Mechanical Alloying ◽  
Subsequent Heat Treatment ◽  
Al2o3 Composite

Investigation of Microstructure and Property of Fe3Al/Al2O3 Composites

2010 ◽  
Vol 150-151 ◽  
pp. 1409-1412 ◽  
Author(s):  
Tao Jiang
Keyword(s):  
Heat Treatment ◽  
Phase Composition ◽  
Mechanical Alloying ◽  
Sintering Process ◽  
Composite Powders ◽  
Al2o3 Composite ◽  
Al2o3 Phase ◽  
The Mean ◽  
Xrd Patterns ◽  
Al2o3 Matrix

The Fe3Al/Al2O3 composites were fabricated by pressureless sintering process. The Fe3Al intermetallics compounds powders were fabricated by mechanical alloying and heat treatment, then the Fe3Al powders and Al2O3 powders were mixed and the Fe3Al/Al2O3 composite powders were prepared, so the Fe3Al/Al2O3 composites were fabricated by sintering process at 1700oC for 2h. The phase composition and microstructure of Fe3Al intermetallics compounds powders produced by mechanical alloying and heat treatment were investigated. The phase composition, microstructure and mechanical properties of the Fe3Al/Al2O3 composites sintered bulks were investigated. The XRD patterns results showed that there existed Fe3Al phase and Al2O3 phase in the sintered composites. The Fe3Al/Al2O3 composites sintered bulks exhibited the homogenous and compact microstructure, the Fe3Al particles were homogenously distributed in the Al2O3 matrix, the mean particles size of Fe3Al intermetallics was about 3-5μm. The Fe3Al/Al2O3 composites exhibited more homogenous and compact microstructure with the increase of Fe3Al content in the Al2O3 matrix. The density and relative density of the Fe3Al/Al2O3 composites increased gradually with the increase of Fe3Al content. The fracture strength and fracture toughness of the Fe3Al/Al2O3 composites increased gradually with the increase of Fe3Al content. The elastic modulus and hardness (HRA) of the Fe3Al/Al2O3 composites decreased gradually with the increase of Fe3Al content.

Nitrogenation of Sm2Fe17 prepared by mechanical alloying and subsequent heat treatment

1992 ◽  
Vol 185 (1) ◽  
pp. 73-80 ◽  
Author(s):  
Lue Manqi ◽  
Miao Weifang ◽  
Song Qihong ◽  
Sun Wensheng ◽  
Wang Kaiyang ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Mechanical Alloying ◽  
Subsequent Heat Treatment

Nano-Crystalline Barium Hexaferrite Powders Prepared by Mechanical Alloying Using Acetate Precursor

2008 ◽  
Vol 368-372 ◽  
pp. 610-612 ◽  
Author(s):  
M. Honarvar Nazari ◽  
Abolghasem Ataie ◽  
S.A. Seyyed Ebrahimi
Keyword(s):  
Heat Treatment ◽  
Magnetic Properties ◽  
Phase Composition ◽  
Mechanical Alloying ◽  
Thermal Behavior ◽  
Crystallite Size ◽  
Barium Hexaferrite ◽  
Subsequent Heat Treatment ◽  
Molar Ratios ◽  
Nano Crystalline

Nano-crystalline barium hexaferrite powders have been prepared by mechanical alloying of nFe2O3+Ba(CH3COO)2 with Fe/Ba molar ratios of 10-12 and subsequent heat treatment. Thermal behavior, phase composition, morphology and magnetic properties of samples were studied using DTA/TGA, XRD, SEM and VSM, respectively. Nano-crystalline Ba-hexaferrite with a mean crystallite size of 46 nm and magnetic properties as high as Ms = 73.9 A.m2/kg and Hci = 334.2 kA/m was formed for mixture of 5.5Fe2O3+Ba(CH3COO)2 which was milled for 48 h and then annealed at 1100 °C.

Order Effect of Vacuum and Ammonia Atmospheres on Aluminium Nitriding by Mechanical Alloying

2012 ◽  
Vol 730-732 ◽  
pp. 936-941 ◽  
Author(s):  
Eduardo Sánchez Caballero ◽  
J. Cintas ◽  
M. Herrera-García ◽  
Francicso Gomez Cuevas ◽  
Juan M. Montes
Keyword(s):  
Heat Treatment ◽  
Mechanical Alloying ◽  
Room Temperature ◽  
Order Effect ◽  
Milling Process ◽  
Subsequent Heat Treatment ◽  
Aluminium Powder ◽  
Xrd Study ◽  
Aluminium Lattice

Aluminium powder was milled under vacuum and/or ammonia atmospheres, in order to evaluate the effect of the order of the atmospheres on the amount of nitrides appearing in the powder after a subsequent heat treatment. All milling experiences were carried out at room temperature for 5 h. The XRD study of sintered powders showed that important amounts of AlN appeared after heating. The use of vacuum and ammonia flow allows controlling the percentage of N rich phases formed. Moreover, the capacity of incorporating nitrogen to the aluminium lattice is very influenced by the vacuum and ammonia flow atmospheres order during the milling process.

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