Transparent polycrystalline ceramics have found various applications, such as laser hosts,
infrared (IR) windows/domes, lamp envelopes and transparent armors, instead of their …

The need for materials for demanding optical applications has engendered a resurgent
interest in transparent ceramics. Transparent polycrystalline magnesium aluminate spinel is …

The differences of translucency and transparency request special conditions for a right
photographic presentation and for correct transmission measurements. These differences …

Mechanical strengthening by grain refinement is a method whereby a material's strength
and hardness can be increased by decreasing the average crystallite grain size. The …

Hardness is important for a high ballistic strength, and with HV10= 20–22GPa sintered sub-
μm Al2O3 is the hardest of all transparent materials for compact windows. However, light …

A review of the densification mechanisms and the microstructural development for
transparent spinel made by free sintering and by hot pressing is given. The paper is divided …

The study investigated the deagglomeration of spinel nanopowders (MgO· nAl2O3, n≈ 1)
from different syntheses in correlation with their resulting performance on green processing …

Mixtures of elementary oxides, MgO–Al2O3, were used to fabricate transparent
polycrystalline magnesium aluminate spinel specimens by means of the spark plasma …

By controlling the heating rate at< 10° C/min during spark‐plasma‐sintering (SPS)
processing, transparent polycrystalline spinel with an in‐line transmission of 50% and 70 …

Most different transparent grades of sintered and single crystalline spinel were investigated
by Vickers and Knoop tests with loads of 1 kg (HK1, HV1) and of 10 kg (HV10). The …