Dense zircon (ZrSiO4) ceramics by high energy ball milling and spark plasma sintering

Colloidal processing, sintering and mechanical properties of zircon (ZrSiO4)

“…Its main properties are: a moderately low linear thermal expansion (4.10 À 6 1C À 1 ) [1] and a high dissociation temperature (1675 1C) [2]. It is also highly inert, even in contact with molten glass or slag.…”

“…To achieve high densification of Zircon materials, it is also possible to use advanced sintering techniques such as Spark Plasma Sintering [1] (SPS). In fact, because of SPS high cost and the geometry restriction associated to the uniaxial pressing inherent to this technique, its access is limited.…”

Phase study of SiO2-ZrO2 composites prepared from polymorphic combination of starting powders via a ball-milling followed by calcination

“…It is also highly inert even when in contact with molten glass or slag which is appropriate for elevated temperature applications with a low chemical attack such as in steel or glass industries [1,3]. Zircon forms from an equimolar reaction of zirconia (ZrO 2 ) and (silica) SiO 2 .…”

“…Zircon (ZrSiO 4 ) is a readily available raw material in nature and zircon ceramic has interesting physical and chemical properties for technological uses [1][2][3] including excellent thermo-mechanical properties such as a very low coefficient of heat conductivity (5.1 W/mC at room temperature and 3.5 W/mC at 1000 C), a low coefficient of thermal expansion (about 4.1×10 -6 C -1 between 25 and 1400 C), and good high-temperature mechanical strength even at a temperature higher than 1400 C [1,2,4,9]. It is also highly inert even when in contact with molten glass or slag which is appropriate for elevated temperature applications with a low chemical attack such as in steel or glass industries [1,3].…”

Zircon-Based Ceramic Coatings Formed by a New Multi-Chamber Gas-Dynamic Accelerator

“…Zircon (ZrSiO 4 ) is a natural mineral used for various applications as a refractory bulk material [1][2][3][4]. The nominal chemical composition of zircon is 67.1 wt % ZrO 2 and 32.9 wt % SiO 2 , but there are also small amounts of Fe 2 O 3 , cerium, thorium, or hafnium [1].…”