Classifications

• • C—CHEMISTRY; METALLURGY
  • C06—EXPLOSIVES; MATCHES
  • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
  • C06B33/00—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
  • C06B33/02—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide with an organic non-explosive or an organic non-thermic component
• • C—CHEMISTRY; METALLURGY
  • C06—EXPLOSIVES; MATCHES
  • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
  • C06B33/00—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
• • C—CHEMISTRY; METALLURGY
  • C06—EXPLOSIVES; MATCHES
  • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
  • C06B43/00—Compositions characterised by explosive or thermic constituents not provided for in groups C06B25/00 - C06B41/00
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F42—AMMUNITION; BLASTING
  • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
  • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
  • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
  • F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
  • F42B12/44—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information of incendiary type
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F42—AMMUNITION; BLASTING
  • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
  • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
  • F42B12/72—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F42—AMMUNITION; BLASTING
  • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
  • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
  • F42B12/72—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
  • F42B12/76—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the casing
• • C—CHEMISTRY; METALLURGY
  • C06—EXPLOSIVES; MATCHES
  • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
  • C06B27/00—Compositions containing a metal, boron, silicon, selenium or tellurium or mixtures, intercompounds or hydrides thereof, and hydrocarbons or halogenated hydrocarbons

Definitions

• the invention relates to high density reactive materials, preferably materials with a high density and exothermic output.
• High Density reactive materials are a new emerging class of materials http://en.wikipedia.org/wiki/Reactive_materials, which have higher densities than conventional reactive materials such that they may provide enhanced performance with mechanical properties suitable for application in a broad range of weapon systems. This includes potential for effective transfer of Kinetic Energy in impact penetrators, fragments and other systems, whilst offering an additional advantage of providing a further exothermic output under explosive loading or following High Velocity impact.
• a high density reactive material composition comprising,
• B) is at least one oxidiser.
• the at least one oxidiser may preferably present in the range of from 35 to 55% wt.
• the at least one oxidiser may be a metal salt, such as, for example, oxides, nitrates, perchlorates, permanganates, peroxides, chlorates.
• a metal salt such as, for example, oxides, nitrates, perchlorates, permanganates, peroxides, chlorates.
• a high density metal salt such as for example, metal oxides, for example CuO.
• the reagent B) when selected from an alloying element may be selected from any non-group 4 metal, metalloid, that undergoes an exothermic alloying reaction with group 4 metals, preferably carbon or boron.
• the boron may be present in an amount 5 to 20% wt, preferably 10% wt.
• the reagent A) group 4 metals are group 4, d-block (transition metals) such as titanium, zirconium, and hafnium. These metals offer high densities, and the specific selection of two different group 4 options offers a chance to target specific density ranges for the final composition whilst retaining similar reactivity.
• At least one of the group 4 metals is hafnium.
• the hafnium is present in the range of from 15 to 30% wt.
• the group 4 metals may offer a range of morphologies—comprising nano, sub micron, or micron sized particulates.
• the at least two group 4 metals may be selected to maximise mixing capability to promote uniformity of distribution (these may be substantially the same size, or targeted different size ranges to achieve a specific multimodal distribution, such as a bimodal distribution.
• the reagent B may be selected from nano, sub micron, or micron sized particulates, such that upon intimate mixing with group 4 metals, may support/provide a homogenous mixture.
• the particulate size of the group 4 metals and reagent B materials may be selected to provide multimodal distributions.
• the reagent C) binder may be selected from at least one fluoroelastomer binder.
• the fluoroelastomer binder may be selected from a range of materials such as for example hexafluoropropylene, vinylidene fluoride, terpolymers of tetrafluoroethylene, vinylidene fluoride and hexafluoropropylene (HFP), perfluoromethylvinylether, THV 220, and PTFE, preferably a Viton, more preferably Viton A.
• the reagent C) binder may preferably be present in the in the range of from 3 to 7% wt, preferably 5% wt.
• a munition comprising a portion of the consolidated composition as defined herein.
• the portion of the munition may comprise all, substantially all or part of a munition.
• the munition may such as for example be a direct fire or indirect fire munition.
• the munition may be kinetic energy or chemical energy munition or a combination thereof, such as, for example a projectile, shell, casing, shaped charge liner, preformed fragments or mortar.
• the munition may be a kinetic energy projectile such as for example, such as a round, from a small calibre ordnance, a medium calibre projectile such as, for example calibres of 30-40 mm and above, penetrator rods or flechettes.
• the projectile may comprise or contain only a monolithic projectile of consolidated composition as defined herein.
• Certain medium calibre projectiles typically comprise a high explosive, the use of a projectile (small or medium calibre) comprising or containing only a consolidated composition according to the invention may provide an insensitive munition.
• the munition may be a gun launched shell, such as for example, 105 mm or 155 mm, wherein part, substantially all or all of the shell casing is a composition as defined herein.
• the composition may be prepared to form pre formed fragments which are further consolidated to form a shell casing.
• a munition subjected to a high set back force such as a gun launched munition, preferably there is a higher percentage weight of fluorelastomer binder.
• the munition may comprise at least one layer deposed thereon of the composition as defined herein.
• the casing of the munition may be subjected to prompt break up, ignition and burn to enhance blast effectiveness.
• the particulates of the composition may not be consolidated and may be available as agglomerates/clumps, and may be ignited as such, and undergo ignition and continue to burn in flight. This may offer enhancement to blast and after burn or Kinetic Energy transfer to targets at range.
• composition either solid or agglomerates may be ejected, or projected, in such a manner to retain physical form/mass and associated Kinetic Energy allowing reaction on impact with targets at a specific thresh-hold impact velocity causing shock reaction and ignition of the material on the surface or within the target structure.
• a method of preparing a high density reactive material as defined herein such as for example, dead load pressing, isostatic pressing, hot sintering, to provide a composition which may be consolidated to form a structural casing or projectile.
• the group 4 metals may be encapsulated or a passivation layer, or sacrificial layer to prevent reaction with air, moisture or unwanted reactions with the other reagents, until activated in the designed mode of use.
• the group 4 metals may be encapsulated with at least one inert material, to prevent reaction with moisture or air.
• a binder preferably a fluoroelastomer.
• the coating/microencapsulation of the group 4 metal may prevent combustion in air during the sintering process.
• a high density reactive material composition comprising,
• At least one group 4 metal present in the range of from 45 to 90% wt at least one oxidiser or alloying element, present in the range of from 5 to 55% wt a binder present in the range of 1-10% wt. wherein said reagents and optional pressing aids are present in substantially 100% wt, wherein said consolidated composition provides an effective density by weight fraction of greater than 5.40.

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• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Organic Chemistry (AREA)
• Combustion & Propulsion (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Materials Engineering (AREA)
• Metallurgy (AREA)
• Powder Metallurgy (AREA)

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• 2015
  • 2015-01-27 GB GB1501336.0A patent/GB2534573A/en not_active Withdrawn
• 2016
  • 2016-01-26 US US15/545,570 patent/US20170355647A1/en not_active Abandoned
  • 2016-01-26 EP EP16702765.5A patent/EP3250539B1/fr active Active
  • 2016-01-26 CA CA2974264A patent/CA2974264A1/fr not_active Abandoned
  • 2016-01-26 AU AU2016211060A patent/AU2016211060B2/en active Active
  • 2016-01-26 WO PCT/GB2016/050161 patent/WO2016120605A1/fr active Application Filing

Patent Citations (4)

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