Modelling transparent ceramics to improve military armour

Sands, James M.; Fountzoulas, C. G.; Gilde, Gary; Patel, Parimal

doi:10.1016/j.jeurceramsoc.2008.03.010

Cited by 32 publications

(8 citation statements)

References 2 publications

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“…26 Of these, AlON transparent polycrystalline ceramic is an extremely durable material with mechanical and optical properties similar to sapphire, for example, a Vickers hardness of 16.00 GPa and fracture toughness of 2.40 MPa m 1/2 , respectively. 27 In this work, the prepared transparent LaAlO 3 /tZrO 2 nanocomposite exhibited more attractive mechanical properties, which suggest a potential application in window materials.…”

Section: Preparation Of Alz Transparent Nanoceramics By Crystallizationmentioning

confidence: 99%

Fabrication of transparent LaAlO3/t-ZrO2 nanoceramics through controlled amorphous crystallization

Mei¹,

He²,

Wang³

et al. 2011

Journal of the European Ceramic Society

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Section: Preparation Of Alz Transparent Nanoceramics By Crystallizationmentioning

confidence: 99%

Fabrication of transparent LaAlO3/t-ZrO2 nanoceramics through controlled amorphous crystallization

Mei¹,

He²,

Wang³

et al. 2011

Journal of the European Ceramic Society

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“…Твердые керамики используются для изготовления сосудов давления, клапанных седел, подложек для электронных блоков и многого другого. Для сверхтвердых керамик, таких как карбид кремния (SiC) и алюмомагниевая шпинель (АМШ, MgAl 2 O 4 ), особый интерес представляет их использование в качестве легкой брони для высокоэффективной защиты людей и техники [1,2].…”

Section: Introductionunclassified

Акустическая и электромагнитная эмиссии при ударном повреждении сверхтвердых керамик SiC и AlMg-=SUB=-2-=/SUB=-O-=SUB=-4-=/SUB=-

Кадомцев¹,

Гольева²,

Дунаев³

et al. 2019

Физика Твердого Тела

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In this paper, we employ SiC super hard ceramics that are widely used for the manufacture of individual means of protecting people from point impact effects and MgAl_2O_4 ceramics transparent in a wide spectral range that are used for protective screens of optical devices of aircraft, which are exposed to solid dust particles and atmospheric precipitation. Here, we study generation and relaxation of microcracks under impact action by using acoustic emission and electromagnetic emission, respectively. Since the mechanism of generation of these types of emissions has a different origin, then a comparison of the emission activity of one and another type allowed identifying general and individual patterns of impact damage to SiC and MgAl_2O_4 solid ceramics.

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“…[9] Property of thicknessindependent transmission is particularly useful in designing of products such as "Transparent Armor". [10,11] Transparent spinel has been processed by several routes, such as pressureless sintering (PLS) or hot pressing (HP) followed by HIP. [10,11] Transparent spinel has been processed by several routes, such as pressureless sintering (PLS) or hot pressing (HP) followed by HIP.…”

Section: Introductionmentioning

confidence: 99%

Effect of Room and High Temperature Compaction on Optical and Mechanical Properties of HIPed Transparent Spinel Ceramics

et al. 2017

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Spinel specimens are processed through Hot Pressing at 1620 C and 20 MPa (designated as HPS) and uniaxial pressing at room temperature with 80 MPa followed by pressure-less sintering at 1650 C (designated as CS). HPS exhibit translucency with marginally higher density (99.8% of theoretical density (TD)) in comparison to CS with 99.5% of TD and negligible transmission value. HPS samples have shown a transmission of 40 and 76% in visible and midwave infrared (MWIR) region, respectively. Both HPS and CS samples are further subjected to Hot Isostatic Pressing (designated as HPS þ HIP and CS þ HIP, respectively), at identical conditions of 1800 C and 195 MPa to achieve close to TD and transparency. HPS þ HIP and CS þ HIP samples enhance their transmission to 78 and 71% in visible region and 86 and 79% in MWIR region, respectively. Although most important parameter for transparent ceramics, i.e., transmission values are relatively high for HPS þ HIP samples and exhibit substantially lower hardness and flexural strength values in comparison to CS þ HIP samples at room and elevated temperature. Fractographic studies of samples fail under flexure at room and elevated temperature have exhibited cleavage fracture with longer facet length for HPS þ HIP correlating well with microstructure. Difference in mechanical properties can be attributed to differences in grain size produced by two methodologies.1700111 (1 of 7)

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Modelling transparent ceramics to improve military armour

Cited by 32 publications

References 2 publications

Fabrication of transparent LaAlO3/t-ZrO2 nanoceramics through controlled amorphous crystallization

Fabrication of transparent LaAlO3/t-ZrO2 nanoceramics through controlled amorphous crystallization

Акустическая и электромагнитная эмиссии при ударном повреждении сверхтвердых керамик SiC и AlMg-=SUB=-2-=/SUB=-O-=SUB=-4-=/SUB=-

Effect of Room and High Temperature Compaction on Optical and Mechanical Properties of HIPed Transparent Spinel Ceramics

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