Synthesis and characterization of nano MgAl2O4 spinel by the co-precipitated method

Synthesis and characterization of spinel–forsterite nanocomposites

“…Many studies have reported that high temperatures (above 1000 8C) are needed for the complete crystallization of spinel phase [16,[19][20][21][22]. Providing that spinel is not formed completely, the volume expansion (5-7%) accompanying the spinellization reaction can be detrimental to densification [21][22][23]. Therefore, to decrease the risk of volume expansion of spinellization reaction during the sintering process of bulk samples, the obtained powders after 40 h of mechanical activation were annealed at 1200 8C for 1 h (Fig.…”

Anticorrosive efficiency of alkyd resin-based coatings containing Mg–Zn–Fe mixed oxide-based pigments

“…Core-shell pigments containing silicate cores and Mg-Zn-Fe shell were also synthetised and studied with focus on their properties in organic protective coatings in a simulated corrosive environment. The particle morphology of such pigments is dictated by the core particle shape and size, affecting the physical properties and barrier properties of the organic coating in corrosive environments [11,25,26]. Layered silicates, specifi cally talc and calcined kaolin, exhibited differences in the composition, physical properties of their surface, and particle texture, which may affect the pigment properties in the paints [27,28].…”

Synthesis and Characterization of a Nanorefractory Dimetaloxide Spinel

“…Magnesium aluminate spinel has received a great deal of attention because of its unique technologically important properties such as high melting point, high mechanical strength at elevated temperatures, high chemical inertness, and good thermal shock resistance [1][2][3]. Because of these properties, the MgAl 2 O 4 spinel has extensively been used for various purposes such as refractory material and humidity sensor in metallurgical, chemical, electro technical, catalysis and electronic industries [4,5]. Recently, the MgAl 2 O 4 spinel has also been employed as an excellent transparent ceramic material for high-temperature arc-enclosing envelopes and alkali-metal vapor discharge devices [6].…”