| Autor: |
Sujith, S. S., Arun Kumar, S. L., Mahesh, K. V., Peer Mohamed, A., Ananthakumar, S. |
| Zdroj: |
Transactions of the Indian Ceramic Society; April 2014, Vol. 73 Issue: 2 p161-164, 4p |
| Abstrakt: |
Monazite type rare earth phosphates (REPs) are low thermal conducting (<5 W.m−1.K−1) high temperature stable polycrystalline ceramics showing unique ‘damage tolerant property’ due to its layered structure and ductile nature. Lanthanum phosphate (LaPO4) is a candidate ‘thermal ceramics’ among many REPs due to its low reactivity with Al2O3and ZrO2. Unfortunately phase pure LaPO4has poor creep resistance, low mechanical strength at elevated temperatures and low micro hardness (<4 GPa). These undesirable engineering properties limit the potential use of LaPO4as refractories. Therefore composite approach is suggested in recent days. In this work, we report the conventional sintering of Al2O3-LaPO4thermal ceramics and the role of LaPO4on the thermal shock resistance of Al2O3ceramic nano composites. |
| Databáze: |
Supplemental Index |
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