Sarkar, D (2007) Synthesis and Thermo-Mechanical Properties of Sol-Gel Derived Zirconia Toughened Alumina Nanocomposite. PhD thesis.
composite precursor powder containing 5-15mol% is prepared by wet chemical route. The washed gel containing pseudoboehmite and amorphous zirconia are characterized with respect to DTA/TG, XRD and IR spectroscopy. In the calcined powder phase evolution of follows the sequence: pseudoboehmite bayerite boehmite ; while that of follows amorphous . However, the crystallization behavior of aluminum-hydroxide is somewhat affected with addition of zirconia. FTIR study reveal the number of M-OH and M-O bond increases on increasing mol% of due to a change in the cationic charge of the composite powder. The formation of amorphous material before crystallization can also be predicted from TEM study, where particle exhibits different morphology; and show smooth, distinct and faceted surfaces at different temperature. A bimodal particle size distribution is observed because of both unagglomerated and partial...
|Item Type:||Thesis (PhD)|
|Uncontrolled Keywords:||Al2O3-ZrO2, aluminum-hydroxide|
|Subjects:||Engineering and Technology > Ceramic Engnieering > Zirconia|
Engineering and Technology > Ceramic Engnieering > Nanocomposites
Engineering and Technology > Ceramic Engnieering > Ceramic Processing
|Divisions:||Engineering and Technology > Department of Ceramic Engineering|
|Deposited By:||Shipra Awasthi|
|Deposited On:||06 May 2009 04:19|
|Last Modified:||06 May 2009 05:01|
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