High‐Toughness Silicon Carbide as Armor

Flinders, Marc; Ray, Darin; Anderson, Angela; Cutler, Raymond A.

doi:10.1111/j.1551-2916.2005.00415.x

Cited by 90 publications

(58 citation statements)

References 31 publications

(55 reference statements)

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“…Due to their extremely brittle nature, most ceramics possess an inverse relationship between hardness and toughness [19,54,55]. To examine this behavior for the ceramics investigated in this study, a plot of Vickers hardness versus fracture toughness is generated in Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Intrinsic microstructural toughening mechanisms can activate various fracture processes. The inclusion of glassy [1] or metallic [19] secondary phases has been shown to decrease the brittleness and increase the fracture toughness value of ceramics. Newer processing techniques, such as reaction bonding, have been used to manufacture ceramics with increased fracture toughness while minimally compromising other material properties, such as density and hardness, compared to similar sintered ceramics [20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The rate-dependent fracture toughness of silicon carbide- and boron carbide-based ceramics

Pittari

Subhash

Zheng

et al. 2015

Journal of the European Ceramic Society

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The rate-dependent fracture toughness of silicon carbide- and boron carbide-based ceramics

Pittari

Subhash

Zheng

et al. 2015

Journal of the European Ceramic Society

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“…6 Since then, several tens of publications reported the phase until recently. [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] However, Hillebrecht and Meyer analyzed the structure of "Al 8 B 4 C 7 " and reported that the correct molecular formula of the compound is Al 3 BC 3 . 26 Several papers have described the properties and structure of Al 3 BC 3 .…”

Section: Introductionmentioning

confidence: 99%

Chemical composition and microstructure of Al3BC3 prepared by different densification methods

Lee¹,

Kim²,

Choi³

et al. 2010

Journal of the European Ceramic Society

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“…[1][2][3][4][5] Because of their brittle nature, ceramics and glasses are susceptible to localized surface damage in the form of cracking when subjected to impact by foreign objects. [6,7] Much work has been carried out on the dynamic impact behaviour of ceramics and glasses. [1][2][3][4][5] Tests have been carried out using small ceramic or metallic spheres, impacting at high speed in so-called ballistic tests.…”

mentioning

confidence: 99%

Mechanical Properties and Impact Resistance of a New Transparent Glass‐Ceramic

Cunha

Peitl

et al. 2007

Adv Eng Mater

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The focus in ceramic armour development today is towards improved protection capability combined with an overall reduction in production cost. [1][2][3][4][5] Because of their brittle nature, ceramics and glasses are susceptible to localized surface damage in the form of cracking when subjected to impact by foreign objects. [6,7] Much work has been carried out on the dynamic impact behaviour of ceramics and glasses. [1][2][3][4][5] Tests have been carried out using small ceramic or metallic spheres, impacting at high speed in so-called ballistic tests. In these tests, projectiles are accelerated toward their target by utilizing specialised devices called gas guns. [8][9][10][11][12][13][14] The development of transparent glass-ceramics with a reinforced surface layer is a promising approach to novel armour materials since glass-ceramics combine high strength with improved fracture toughness compared with glass and yet they can be reliably produced using cost-effective processing methods. [15,16] A number of technical reports have been published in the last forty years regarding different types of transparent glass-ceramics, [17][18][19][20] but very few focused on their use as armour materials. The most attractive advantage of glass-ceramics is the possibility of using standard glass processing methods followed by controlled heat treatment, which is a fast and reliable production method, resulting in almost no residual porosity in the materials. Moreover the melting plus heat-treatment route offers very good reproducibility compared with the alternative method based on powder processing and sintering commonly used in polycrystalline ceramics, which is prone to microstructure inhomogeneity. In the majority of previous investigations, transparent glass-ceramics have been obtained, which exhibit the presence of nanocrystals within an amorphous matrix. [21,22] This nanostructure (with less than 70 % crystalline phase) guarantees optical transparency since the crystal size is smaller than the wavelength of visible light. The two principal conditions for achieving high transparency are low optical scattering and low atomic absorption in the visible range. [23][24][25] Transparent glass-ceramics appear to be an ideal material for advanced armour applications due to their relatively good transparency, low density, relatively high fracture strength as well as their thermal and chemical stability. However, compared with the most popular polycrystalline ceramics (e.g. Al 2 O 3 ), glass-ceramics exhibit lower fracture toughness. [26][27][28][29][30] The fracture toughness of glass-ceramics can be increased by using the ion-exchange method, similarly to that used in chemically toughened glass. The technique of ion-exchange is one of the most effective alternatives to minimize the detrimental effect of surface flaws in glass bodies (inherent to their processing and use) because it produces compressive stresses on the glass surfaces by substituting the smaller ions (e.g. Na + ) in the glass by larger ions (K + ), a component of...

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High‐Toughness Silicon Carbide as Armor

Cited by 90 publications

References 31 publications

The rate-dependent fracture toughness of silicon carbide- and boron carbide-based ceramics

The rate-dependent fracture toughness of silicon carbide- and boron carbide-based ceramics

Chemical composition and microstructure of Al3BC3 prepared by different densification methods

Mechanical Properties and Impact Resistance of a New Transparent Glass‐Ceramic

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