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Paper Information

Journal:   JOURNAL OF NEW MATERIALS   SUMMER 2015 , Volume 5 , Number 4 (20); Page(s) 55 To 66.
 
Paper: 

THE STUDY OF PARAMETERS AFFECTING THE SINTERING OF AL2O3-TIB2 NANOCOMPOSITE SYNTHESIZED VIA MECHANOCHEMICAL SYNTHESIS METHOD AND EVALUTION MECHANICAL PROPERTIES

 
 
Author(s):  SHAH BANDARY SOORANI M.*, EBRAHIMI KAHRIZSANGI R., KARAMIAN E.
 
* DEPARTMENT OF MATERIALS ENGINEERING, ISLAMIC AZAD UNIVERSITY, NAJAF ABAD BRANCH
 
Abstract: 

sintering of Al2O3- TiB2 nanocomposite Synthesized via Mechanochemical synthesis method were studied In order to improveits properties. For this purpose, First The raw materials include Al powder, TiO2 and B2O3 mixed with stoichiometric ratio were milled at room temperature under inert atmosphere at 2.5, 6 and 10h periods. In order to determine the phases formed and Crystalline grain size, X-ray diffraction analysis was used. To investigate the sintering behavior of Prepared powders were pressed at a pressure 700MP and green porosity and density was measured. Samples were sintered inside the furnace under inert at temperatures from 1100 to 1400oc for 1 to 4 hours. Finally, inorder to optimize the sintering temperature and time, The final properties in eluding compressive strength, hardness, density were studied. To study the morphology and particle size, Scanning Electron Microscope (SEM) were used. The results showed that the complete sintering is carried out at a temperature of 1400oc. At this temperature, The sample had high estdensity (3.8 gr/cm3) and alsohas a hardness 927HV and the compressive streng this 500 Mpa.

 
Keyword(s): NANOCORNPOSITES, TITANIUM DIBORIDE, MECHANO CHEMICAL SYNTHESIS, SINTERING
 
References: 
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