An Ultimate Guide on Diamond
Post new topic Reply to topic
   Chemical Community Forum Index : Chemistry forum
View previous topic :: View next topic  
Author Message
bejoy
Sr. Staff Member
Sr. Staff Member


Joined: 27 Oct 2014
Posts: 107
Reply with quoteFind all posts by bejoy

An Ultimate Guide on Diamond


History and Etymology:

In 4th century BC, diamonds were first discovered and mined in India. Diamond in India had been known for at least 3000 years but 6000 years most likely.

Diamonds popularity got increased since 19th century after its increase in supply, improved polishing and cutting techniques.

In 327 BC, Alexander brought first diamond to Europe from India.

French scientist Antoine Lavoisier in 1772 showed that the only product of the combustion of Diamond is Carbon dioxides, hence proving that diamond compose of only carbon. Later on chemist Smithson Tennant in 1797, repeated and expanded the experiment and demonstrated that diamond and graphite releases same amount of gas.

Diamond today is used majorly for adornment as gemstones and for cutting hard materials as industrial abrasives.

Diamond got its name from ancient Greek word adamas which meant “unbreakable”.

Properties of Diamond:

Hardness: Diamond is the hardest material known as per both Mohs and Vickers scale.

Electrical conductivity: Most diamonds are electrical insulators. Some blue colour diamonds are natural semiconductors.

Surface property: Diamonds are lipophilic and hydrophobic means that the surface of the diamond cannot be wet by water but can get wet easily by oil.

Chemical stability: Diamonds are not much reactive. In room temperatures diamonds does not reacts with any chemical reagents.

Corrosion: Diamond is corrosion resistant.

Diamond has low coefficient of friction and low thermal expansion coefficient.


Read more: https://goo.gl/WGx5rQ
Back to top
View user's profileSend private message
Display posts from previous:   
Post new topic Reply to topic
   Chemical Community Forum Index : Chemistry forum Page 1 of 1

 
Jump to:  

Chemical portal