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- Superhard_material abstract "A superhard material is a material with a hardness value exceeding 40 GPa (gigapascals) when measured by the Vickers hardness test. They are highly incompressible solids with high electron density and high bond covalency. As a result of their unique properties, these materials are of great interest in many industrial areas including, but not limited to, abrasives, polishing and cutting tools and wear-resistant and protective coatings. Diamond is the hardest known material to date with a Vickers hardness in the range of 70–150 GPa. Diamond demonstrates both high thermal conductivity and electrically insulating properties and much attention has been put into finding practical applications of this material. However, diamond has several limitations for mass industrial application, including its high cost and oxidation at temperatures above 800 °C. In addition, diamond dissolves in iron and forms iron carbides at high temperatures and therefore is inefficient in cutting ferrous materials including steel. Therefore, recent research of superhard materials has been focusing on compounds which would be thermally and chemically more stable than pure diamond.Superhard materials can be generally classified into two categories: intrinsic compounds and extrinsic compounds. The intrinsic group includes diamond, cubic boron nitride (c-BN), carbon nitrides and ternary compounds such as B-N-C, which possess an innate hardness. Conversely, extrinsic materials are those that have superhardness and other mechanical properties that are determined by their microstructure rather than composition. An example of extrinsic superhard material is nanocrystalline diamond known as aggregated diamond nanorods.".
- Superhard_material thumbnail Nanoindenter_holder.jpg?width=300.
- Superhard_material wikiPageID "1196186".
- Superhard_material wikiPageRevisionID "604549747".
- Superhard_material hasPhotoCollection Superhard_material.
- Superhard_material subject Category:Diamond.
- Superhard_material subject Category:Materials.
- Superhard_material subject Category:Superhard_materials.
- Superhard_material type Abstraction100002137.
- Superhard_material type Material114580897.
- Superhard_material type Materials.
- Superhard_material type Matter100020827.
- Superhard_material type Part113809207.
- Superhard_material type PhysicalEntity100001930.
- Superhard_material type Relation100031921.
- Superhard_material type Substance100019613.
- Superhard_material type SuperhardMaterials.
- Superhard_material comment "A superhard material is a material with a hardness value exceeding 40 GPa (gigapascals) when measured by the Vickers hardness test. They are highly incompressible solids with high electron density and high bond covalency. As a result of their unique properties, these materials are of great interest in many industrial areas including, but not limited to, abrasives, polishing and cutting tools and wear-resistant and protective coatings.".
- Superhard_material label "Material superduro".
- Superhard_material label "Materiali superduri".
- Superhard_material label "Matériau superdur".
- Superhard_material label "Superhard material".
- Superhard_material label "Сверхтвёрдые материалы".
- Superhard_material label "超硬度材料".
- Superhard_material label "超硬材料".
- Superhard_material sameAs Material_superduro.
- Superhard_material sameAs Matériau_superdur.
- Superhard_material sameAs Materiali_superduri.
- Superhard_material sameAs 超硬度材料.
- Superhard_material sameAs Material_superduro.
- Superhard_material sameAs m.04gflf.
- Superhard_material sameAs Q2557782.
- Superhard_material sameAs Q2557782.
- Superhard_material sameAs Superhard_material.
- Superhard_material wasDerivedFrom Superhard_material?oldid=604549747.
- Superhard_material depiction Nanoindenter_holder.jpg.
- Superhard_material isPrimaryTopicOf Superhard_material.
