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Statements

Subject Item
dbr:Anvil_press
rdf:type
yago:Artifact100021939 yago:WikicatMachines dbo:Device yago:Device103183080 yago:Object100002684 yago:Instrumentality103575240 yago:Machine103699975 yago:Whole100003553 yago:PhysicalEntity100001930
rdfs:label
Anvil press
rdfs:comment
A multi-anvil press, or anvil press is a type of device related to a machine press that is used to create extraordinarily high pressures within a small volume. Anvil presses are used in materials science and geology for the synthesis and study the different phases of materials under extreme pressure, as well as for the industrial production of valuable minerals, especially synthetic diamonds, as they mimic the pressures and temperatures that exist deep in the Earth. These instruments allow the simultaneous compression and heating of millimeter size solid phase samples such as rocks, minerals, ceramics, glasses, composite materials, or metals and are capable of reaching pressures above 25 GPa (around 250,000 atmospheres) and temperatures exceeding 2,500 °C. This allows mineral physicists an
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dbc:Metal_forming dbc:Presswork dbc:Machine_tools
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4116107
dbo:wikiPageRevisionID
1078605146
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dbr:Composite_material dbr:Octahedron dbr:Machine dbr:Ceramic dbr:Neutron dbr:Diamond_anvil_cell dbr:X-ray dbr:Phase_(matter) dbr:Geology dbr:Newton_(unit) dbr:Thermal_conductivity dbr:Conjugate_variables_(thermodynamics) dbr:Pascal_(unit) dbr:Millimeter dbr:Thermocouple dbr:Compressibility dbc:Metal_forming dbr:Density dbr:Optical dbr:Glass dbr:Chemical_kinetics dbr:Sound_velocity dbr:Mass_diffusivity dbr:Machine_press dbr:Mineral dbr:Metal dbr:Lever dbr:Metric_ton dbr:Materials_science dbr:Tungsten_carbide dbc:Presswork dbr:Deep-focus_earthquake dbr:Acoustic_interferometer dbr:Lawrence_Livermore_National_Laboratory dbr:Rock_(geology) dbr:Nuclear_magnetic_resonance dbr:Heat dbr:Magnetic dbr:Upper_mantle_(Earth) dbr:Electrical dbr:Synthetic_diamond dbr:Light-gas_gun dbr:Lanthanum dbc:Machine_tools dbr:Viscosity dbr:Lithosphere dbr:Magnesium_oxide
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n13:AM76_1092.pdf n14:Multianvilpage.html n19:Multianvilpage.html n22:multi_anvil
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dbo:abstract
A multi-anvil press, or anvil press is a type of device related to a machine press that is used to create extraordinarily high pressures within a small volume. Anvil presses are used in materials science and geology for the synthesis and study the different phases of materials under extreme pressure, as well as for the industrial production of valuable minerals, especially synthetic diamonds, as they mimic the pressures and temperatures that exist deep in the Earth. These instruments allow the simultaneous compression and heating of millimeter size solid phase samples such as rocks, minerals, ceramics, glasses, composite materials, or metals and are capable of reaching pressures above 25 GPa (around 250,000 atmospheres) and temperatures exceeding 2,500 °C. This allows mineral physicists and petrologists studying the Earth's interior to experimentally reproduce the conditions found throughout the lithosphere and upper mantle, a region that spans the near surface to a depth of 700 km. In addition to pressing on the sample, the experiment passes an electric current through a furnace within the assembly to generate temperatures up to 2,200 °C. Although Diamond anvil cells and light-gas guns can access even higher pressures, the multi-anvil apparatus can accommodate much larger samples, which simplifies sample preparation and improves the precision of measurements and the stability of the experimental parameters. The multi-anvil press is a relatively rare research tool. Lawrence Livermore National Laboratory's two presses have been used for a variety of material property studies, including diffusion and deformation of ceramics and metals, deep-focus earthquake, and the high-pressure stability of mineral phases.
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