2019年6月18日 · While diamonds are classically viewed as the hardest material found on Earth, they are neither the strongest material overall nor even the strongest naturally occurring material. There are, at...

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 ...

Its hardness is theoretically superior to that of cubic diamond (up to 58% more), according to computational simulations, but natural specimens exhibited somewhat lower hardness through a large range of values (from 7–8 on Mohs hardness scale).

Researchers found that when carbon and nitrogen precursors were subjected to extreme heat and pressure, the resulting materials – known as carbon nitrides – were tougher than cubic boron nitride, the second hardest material after diamond.

While diamonds are the hardest natural substance, other natural and synthetic materials are harder. Two natural materials, lonsdaleite (carbon) and wurtzite (boron nitride), are 58 percent harder than diamond. These substances can actually surpass diamonds by 18 percent when subjected to pressure.

2023年10月19日 · Diamond scores a perfect 10 on the Mohs hardness scale, indicating that it is the hardest natural material when subjected to scratching. However, lonsdaleite, a substance found in meteorites, is predicted to be even harder than diamond. Ask any science-loving geek “what is the hardest material?” and he will undoubtedly reply diamond.

2009年2月16日 · Now a rare natural substance looks likely to leave them all far behind – at 58 per cent harder than diamond. Zicheng Pan at Shanghai Jiao Tong University in China and colleagues simulated how...

2009年2月12日 · (PhysOrg.com) -- Currently, diamond is regarded to be the hardest known material in the world. But by considering large compressive pressures under indenters, scientists have calculated that a...

2023年10月19日 · A major contender for a material that is harder than diamond is lonsdaleite. Like diamonds, this material is made of carbon atoms but arranged into a hexagonal crystal structure instead of a...

2023年10月14日 · Most materials that claim to be harder than diamond come from slightly changing the classic diamond crystal structure, or swapping out some of the carbon atoms with atoms such as boron or...