The high-temperature radiolucent ceramic composite materials for the radomes and other products of aviation engineering (review)

Ivakhnenko, Yu.A.; Varrik, N. M.; Maksimov, V. G.

doi:10.18577/2307-6046-2016-0-5-5-5

Cited by 9 publications

(2 citation statements)

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“…An option to overcome these difficulties can be the introduction of additives into the ceramic slip. This approach was used in [18][19][20][21]. In order to prevent crystallization of quartz ceramics during sintering, boron oxide [18], anoxic boron-containing sintering activators [18,19], kaolin [20], nanodispersed silica [21], etc.…”

Section: Materials and Methods For Studying The Effect Of Aluminum Phmentioning

confidence: 99%

Determination of the influence of aluminum phosphate on the properties of quartz ceramics

Karasik

Kozyreva

Dushyn

2021

EEJET

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One of the significant disadvantages of quartz glass-based materials is their tendency to crystallize cristobalite during firing and, as a consequence, a significant deterioration in performance. In order to prevent crystallization of quartz ceramics during sintering, a number of additives are used. However, all known options some disadvantages, namely, relatively low strength values and increased coefficient of linear thermal expansion of products.In this regard, a promising area of research is to study the effect of aluminum phosphate additives on the properties of quartz ceramics. According to the totality of properties, the addition of AlPO4 in an amount of 20 wt % has the most positive effect on the characteristics of quartz ceramics. According to differential thermal analysis, it is noted that up to a temperature of 1,200 °C, no noticeable phase and modification transformations occur in the base mixtures. In the course of the work, it was found that the most appropriate firing mode is as follows: oxidizing medium; the products are immersed in a hot furnace, after being held at the maximum temperature, they are removed from the hot furnace, cooling occurs slowly in the air. The materials obtained in this way are characterized by the following properties: α=31.6·10-7 deg-1; σcomp=153 MPa; P=2.7 %; tgδ and ε (frequency 1010 Hz, temperature 20 °C) 0.001 and 10, respectively. It is noted that the main crystal phase prevailing in the samples is aluminum phosphate. The microstructure of the material is characterized by the presence of a small number of residual pores and a densely sintered shard.The proposed solution will significantly reduce power consumption, improve production performance and increase the basic properties of polyfunctional quartz ceramic products

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Section: Materials and Methods For Studying The Effect Of Aluminum Phmentioning

confidence: 99%

Determination of the influence of aluminum phosphate on the properties of quartz ceramics

Karasik

Kozyreva

Dushyn

2021

EEJET

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“…Materials for the manufacture of fairings should not alter the amplitude of a passing electromagnetic wave and lead to a chaotic change in its phase [1]. The key requirement for…”

Section: Introductionmentioning

confidence: 99%

Subsolidus structure of the ZnO–SrO–Al2O3–SiO2 system as a base for designing radio-transparent ceramics

Fedorenko

Лисачук

Prytkina³

et al. 2020

EEJET

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Influence of the radiotransparent radome on characteristics of radar station

Gyulmagomedov¹

2021

XLIV ACADEMIC SPACE CONFERENCE: Dedicated to the Memory of Academician S.P. Korolev and Other Outstanding Russian Scientists –

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The high-temperature radiolucent ceramic composite materials for the radomes and other products of aviation engineering (review)

Cited by 9 publications

References 0 publications

Determination of the influence of aluminum phosphate on the properties of quartz ceramics

Determination of the influence of aluminum phosphate on the properties of quartz ceramics

Subsolidus structure of the ZnO–SrO–Al2O3–SiO2 system as a base for designing radio-transparent ceramics

Influence of the radiotransparent radome on characteristics of radar station

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