Production process and the properties of lightweight articles made from ZrO2

Dabizha, A. S.; Leshchuk, T. V.; Rutman, D. S.; Toropov, Yu. S.; Taksis, G. A.; Pliner, S. Yu.

doi:10.1007/bf01398420

Refractories

1981

DOI: 10.1007/bf01398420

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Production process and the properties of lightweight articles made from ZrO2

A. S. Dabizha¹,

T. V. Leshchuk²,

D. S. Rutman³

et al.

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1983

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“…The polystyrene grade PSV was foamed in 40 min in boiling water. *Properties of articles of foamed ceramic based on ZrO2, using the technology described in [16], shown for comparison. The molding body was prepared from coarse and fine fillers, foamed polystyrene, and Zr02 suspension batched by volume.…”

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“…i. To produce the filler, the foam briquets, made of Zr02 by a method described in [16], were ground in a jaw crusher, and the crushed material was screened into fractions of large and fine fillers.The suspension was prepared from powdered Zr02 stabilized with 15% (weight parts) Y203, obtained by the combined precipitation of components from solutions of chlorides [ii]. The suspension has a particle size of the order of micrometers, with a density of 2.3-2.6 g/cm 3 and pH = 2.3.…”

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Porous ceramic concrete based on zirconia as a high-temperature heat-insulant

Rutman¹,

Toropov²,

Pliner³

et al. 1983

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The Eastern Institute of Refractories has designed a resistance heater from stabilized zirconium dioxide for use in oxidizing atmospheres at temperatures of up to 2500~ [1][2][3], ana has designed furnaces based on it [4][5][6][7].These furnaces are particularly valuable for firing ceramics, growing single crystals, and forming quartz fiber [8][9][10].Experience with these furnaces has shown that to reduce the inertia and increase the working reliability of the heaters it is extremely important to use linings which possess a range of properties which are, in fact, very difficult to combine: application temperature up to 2500~ high resistance to creep, good thermal-shock resistance, and low thermal conductivity and specific heat.Materials based on magnesium and aluminum oxides are unsuitable for these purposes, so zirconia was used to make high-temperature insulation; this has a high refractoriness and low thermal conductivity.Previously [Ii], it was shown that stabilized zirconia obtained by the combined precipitation of components from aqueous solutions, together with a high homogeneity and sintering activity, possesses cementing properties, which means it can be used for making refractory concretes.The technology involved the use of the principles for obtaining porous ceramic concretes [12,13], foamed ceramic from Zr02 [14], and the use of foamed polystyrene to obtain spherical pores in the ceramic products [15].The technology for producing porous ceramic concrete from zirconia is shown in Fig. i. To produce the filler, the foam briquets, made of Zr02 by a method described in [16], were ground in a jaw crusher, and the crushed material was screened into fractions of large and fine fillers.The suspension was prepared from powdered Zr02 stabilized with 15% (weight parts) Y203, obtained by the combined precipitation of components from solutions of chlorides [ii]. The suspension has a particle size of the order of micrometers, with a density of 2.3-2.6 g/cm 3 and pH = 2.3. The polystyrene grade PSV was foamed in 40 min in boiling water.

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confidence: 99%

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confidence: 99%

Porous ceramic concrete based on zirconia as a high-temperature heat-insulant

Rutman¹,

Toropov²,

Pliner³

et al. 1983

Refractories

Self Cite

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Production process and the properties of lightweight articles made from ZrO2

Cited by 1 publication

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Porous ceramic concrete based on zirconia as a high-temperature heat-insulant

Porous ceramic concrete based on zirconia as a high-temperature heat-insulant

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