Advanced Ceramic Materials

Abstract

He obtained an MSc in Physics and a Ph.D. from the Faculty of Sciences of Sfax, Tunisia. His research areas include nanomaterials, nanotechnology, ceramics, composites, powder technology, and modeling. Dr. Mhadhbi has supervised several researchers and authored several research papers in national and international journals and books. He has also presented numerous papers at national and international conferences and seminars. He is a member of various associations and journal editorial boards.

Properties of TiC and TiN Reinforced Alumina–Zirconia Composites Sintered with Spark Plasma Technique

“…The indentation fracture toughness of the tested composites increased by 10-20% as the temperature used was increased. Titanium carbide and nitride reinforced alumina matrix composites consolidated through SPS exhibited: Vickers hardness HV1 from 19.4 GPa to 18.2 GPa, critical stress intensity factor KIC(HV) from 3.84 MPa⋅m 1/2 to 5.83 MPa⋅m 1/2 , Young modulus from 400 GPa to 421 GPa, apparent density from 4.26 g/cm 3 to 4.44 g/cm 3 , and relative density from 98.18% to 98.89%. Samples sintered by SPS marked as TCN3 had the Vickers hardness value of over 19.0 GPa.…”

“…The properties of single-phase ceramic materials do not meet all the requirements for these materials, therefore it is purposeful to use materials with a more complex structure. Ceramic matrix composites (CMCs) are systems designed to combine the excellent strength and high temperature properties of ceramics with the durability of advanced composites [3][4][5]. Ceramic composites in which the alumina matrix is reinforced with a wide range of ceramic phases including TiC, TiN, ZrO 2 , WC, NbC, Ti(C,N), SiC, TiB 2 , offer good strength properties, high hardness, wear resistance, chemical inertness and an improved toughness level in comparison to alumina [6][7][8].…”

Recycling of sludge from drinking water treatment as ceramic material for the manufacture of tiles

“…Free quartz remains the major phase, although as it is only stable up to 870 ºC, it would be tridimite, which is a polymorphic state of silica (Reed, 1995;Tiwari et al, 2016).…”

“…The same applies to fired samples (980 ºC), but in this case carbonates release CO 2 during firing. Although the change in volume (due to the re-expansion that occurs) is usually not significant, weight loss can be considerable (Tiwari et al, 2016).…”

“…This property could suggest that the DWTP sludge can be used as an additive to increase the expansion of the biscuit in the case of glazed ceramic manufacturing. Generally, the enamel has an expansion superior to the clays that make up the base or biscuit (Tiwari et al, 2016). The industry of these products currently uses calcareous pastes to make the expansion of enamel and biscuit more compatible (Tiwari et al, 2016).…”