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Rhenium diboride (ReB2) is a synthetic superhard material. It was first synthesized in 1962  and re-emerged recently due to hopes of achieving high hardness comparable to that of diamond. The reported ultrahigh hardness has been questioned, although this is a matter of definition as in the initial test rhenium diboride was able to scratch diamond. The production method of this material does not involve high pressures as with other hard synthetic materials, such as cubic boron nitride, which makes production cheap. However, rhenium itself is an expensive metal.

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rdfs:label
  • Rheniumdiborid (de)
  • Dibororrenio (es)
  • Diborure de rhénium (fr)
  • Diboruro di renio (it)
  • 이붕화 레늄 (ko)
  • Rhenium diboride (en)
  • Диборид рения (ru)
  • 二硼化铼 (zh)
rdfs:comment
  • Rheniumdiborid (ReB2) ist ein künstlich hergestellter kristalliner Feststoff. Er besteht aus den Elementen Rhenium und Bor und besitzt eine vergleichbar hohe Härte wie Diamant. In Versuchen war es möglich, Diamant mit Rheniumdiborid zu ritzen, woraus sich schließen lässt, dass diese Substanz in zumindest einer kristallographischen Richtung (der c-Achse) eine höhere Härte als Diamant aufweist. (de)
  • El diboruro de renio (ReB2) es un material superduro sintético. Fue descubierto por un equipo de la UCLA y anunciado en Science en abril del 2007.​ El método de producción de este material no involucra altas presiones, como en otros materiales sintéticos duros, tales como el nitruro de boro cúbico, lo que abarata su producción. Este compuesto se forma a partir de una mezcla de renio, notable por su resistencia a la presión alta, y el boro, el cual forma enlaces covalentes cortos y fuertes con el renio. El material resultante es lo suficientemente duro como para rayar al diamante. (es)
  • Le diborure de rhénium (ReB2) est un matériau superdur synthétique. La première synthèse a été décrite en 1962. La dureté du diborure de rhénium a été remise en question, bien qu'il ait été démontré que ce matériau pouvait rayer du diamant. La production du diborure de rhénium ne nécessite pas l'emploi de fortes pressions comme pour les autres matériaux superdurs, tel le nitrure de bore cubique, ce qui fait que sa fabrication est peu coûteuse. Cependant, le rhénium lui-même est un métal cher. Le composé est formé d'un mélange de rhénium, connu pour sa résistance aux fortes pressions, et de bore qui forme des liaisons covalentes courtes et fortes avec le rhénium. (fr)
  • 이붕화 레늄은 붕소와 레늄이 결합한 광물이다. 다이아몬드보다 단단하다고 알려져 있다. (ko)
  • Дибори́д ре́ния (ReB2) — бинарное химическое соединение бора и рения, синтетическое сверхтвёрдое вещество, по твёрдости по некоторым кристаллографическим плоскостям превосходящее алмаз. (ru)
  • 二硼化铼(ReB2)是一种合成超硬材料。它首次于1962年合成,因有望达到与金刚石相若的硬度而再次受到重视。报告所声称的超高硬度受到怀疑,尽管这是一个定义问题,因为在最初的测试中二硼化铼能够刻劃金刚石。 二硼化铼的生产方式与其他合成超硬材料(如立方氮化硼)不同,不涉及高压处理,因此生产成本比较低。然而,铼本身是一种昂贵的金属。 该化合物由耐高压的铼和硼的混合物形成,其中硼与铼形成短而坚固的共价键。 (zh)
  • Rhenium diboride (ReB2) is a synthetic superhard material. It was first synthesized in 1962  and re-emerged recently due to hopes of achieving high hardness comparable to that of diamond. The reported ultrahigh hardness has been questioned, although this is a matter of definition as in the initial test rhenium diboride was able to scratch diamond. The production method of this material does not involve high pressures as with other hard synthetic materials, such as cubic boron nitride, which makes production cheap. However, rhenium itself is an expensive metal. (en)
  • Il diboruro di renio (ReB2) è un materiale sintetico superduro composto da una miscela di renio, noto per la sua resistenza alle alte pressioni, e boro, che forma legami covalenti brevi e forti con il renio. È stato sintetizzato per la prima volta nel 1962 ed è riemerso di recente grazie alla speranza di ottenere un'elevata durezza paragonabile a quella del diamante. La durezza ultraelevata riportata è stata messa in dubbio, sebbene questa sia una questione di definizione poiché nel test iniziale il diboruro di renio è stato in grado di graffiare il diamante. (it)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/Magnesium-diboride-3D-balls.png
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