Hybrid microwave sintering of alumina and 3 mol% Y2O3-stabilized zirconia in a multimode cavity – Influence of the sintering cell

Microwave sintering of zirconia toughened alumina - Influence of the type and content of doping in zirconia

“…In a previous article [34], an "internal susceptor" effect of 3YZ in a ZTA composite was observed and discussed for ZTA with different volume fractions of zirconia. It can be hypothesized that zirconia grains preferentially heat by interaction with MW and then heat 12 surrounding alumina grains by conduction.…”

“…The addition of 0Z and 10CeZ to alumina matrix did not bring any improvement to MW coupling, compared with monolithic alumina (see Figure 5). The mixture of 3YZ and alumina helped to obtain an intermediate behaviour between alumina and zirconia and suppressed the thermal runaway undergone by 3YZ (submitted to the same experimental procedure in [34]). Mixing 8YZ with alumina did not prevent from the thermal runaway.…”

Microwave sintering of dense and lattice 3Y-TZP samples shaped by digital light processing

“…MW sintering was carried out in an instrumented multimode MW cavity, already described in details in a previous paper [33]. A schematic view of the setup is shown in Figure 2.…”

“…The green samples were positioned in a sintering cell in order to optimize samples' insulation and guarantee their homogeneous heating. This cell was adapted from a cell previously described [33]. The cell mainly contained plates of thermal insulators made of aluminosilicate fibers (KVS 184-400, RATH ® , Germany).…”

“…To obtain an accurate value of temperature, it is necessary to know the ratio of apparent emissivity k in the experimental conditions. Therefore, a calibration method based on the melting point of a metallic calibration material as described by Zymełka et al [34] and Khalile et al [33] was used. In this study, palladium (Pd: Tmelting = 1550 °C) was used as calibrating material.…”