Difference between revisions of "Simple metal containing carbides and nitrides"

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* Mg<sub>3</sub>N<sub>2(s)</sub> Magnesium nitide [https://en.wikipedia.org/wiki/Magnesium_nitride] – reacts with water
 
* Mg<sub>3</sub>N<sub>2(s)</sub> Magnesium nitide [https://en.wikipedia.org/wiki/Magnesium_nitride] – reacts with water
 
* Magnesium carbide ??
 
* Magnesium carbide ??
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 +
== Compounds with more rare elements ==
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 +
'''Nitrides:'''
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* CrN – [https://www.mineralienatlas.de/lexikon/index.php/MineralData?lang=en&language=english&mineral=Carlsbergit Carlsbergite (mineralienatlas)] – Mohs 7
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* VN – [https://www.mineralienatlas.de/lexikon/index.php/MineralData?lang=en&language=english&mineral=Uakitit Uakitite] – Mohs ??
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'''Carbides:'''<br>
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----
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4th period:
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* Various chromium carbides: [https://en.wikipedia.org/wiki/Chromium(II)_carbide Chromium(II) carbide]
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* Cr<sub>3</sub>C<sub>2</sub> – [https://en.wikipedia.org/wiki/Tongbaite Tongbaite (wikipedia] [https://www.mineralienatlas.de/lexikon/index.php/MineralData?lang=en&language=english&mineral=Tongbait (mineralienatlas)] – Mohs 8.5 – ortorhombic
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* [//en.wikipedia.org/wiki/Chromium_carbide Cr<sub>3</sub>C<sub>2</sub>; Cr<sub>7</sub>C<sub>3</sub>; Cr<sub>23</sub>C<sub>6</sub>] (1,895 °C; 3,443 °F; 2,168 K; extremely hard; very corrosion resistant)
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* [//en.wikipedia.org/wiki/Vanadium_carbide VC] (2810 °C; 9-9.5 Mohs, cubic)
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----
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5th period:
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* [//en.wikipedia.org/wiki/Zirconium_carbide ZrC] (3532 °C; extremely hard; highly corrosion resistant; very metallic, cubic)
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* [http://en.wikipedia.org/wiki/Niobium_carbide Nb<sub>2</sub>C] (3490 °C; extremely hard; highly corrosion resistant)
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* Mo<sub>2</sub>C (2692 °C) [http://tttmetalpowder.com/molybdenum-carbide-powder-303/]; MoC; Mo<sub>3</sub>C<sub>2</sub> [http://en.wikipedia.org/wiki/Carbide]
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----
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6th period:
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* WC – [https://www.mineralienatlas.de/lexikon/index.php/MineralData?lang=en&language=english&mineral=Qusongit Qusongit (mineralienatlas)] – Mohs 7.25
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* [//en.wikipedia.org/wiki/Hafnium_carbide HfC] (3900 °C; very refractory; low oxidation resistance, cubic)
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* TaC – [https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Tantalcarbid Tantalum carbide (mineralienatlas)] – Mohs 6-7 – ''tantal is very rare''
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'''Borides:'''
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* OsB, Os<sub>2</sub>B<sub>3</sub> and OsB<sub>2</sub> – [https://en.wikipedia.org/wiki/Osmium_borides Osmium borides]
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* ReB<sub>2</sub> [https://en.wikipedia.org/wiki/Rhenium_diboride Rhenium_diboride]
  
 
== Related ==
 
== Related ==
 
   
 
   
 
* [[Refractory compound]]
 
* [[Refractory compound]]
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== External links ==
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* [https://en.wikipedia.org/wiki/Superhard_material Superhard material]
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* [https://en.wikipedia.org/wiki/Category:Superhard_materials Category:Superhard_materials]

Revision as of 17:53, 1 July 2021

This article is a stub. It needs to be expanded.

There are few/no natural mineral examples for these compounds.
This is likely because all these compounds are in a highly reduced stated and some of them are
not even capable of forming a protective macroscale passivation layer.

Awesome compounds

Titanium:

  • TiC Titanium carbide – and ZrC Zirconum carbide
  • TiN Titanium nitride

Silicon (counting silicon as metal here):

  • SiC Silicon carbide
  • Si3N4 Silicon nitride [1]

For more awesome compounds see: Base materials with high potential

Compounds that need to be sealed in PPV to be usable

Iron:

  • Fe3C Iron carbide aka cementite aka iron cohenite – ortorhombic – Mohs 5.5 to 6.0 – 7.20 to 7.65g/ccm – metallic luster
  • Iron nitrides – Wikipedia: "Group 7 and group 8 transition metals form nitrides that decompose at relatively low temperatures" Fe2N 400°C

Aluminum:

  • Al4C3 Aluminum carbide [2] – hydrolyses in contact with water
  • AlN [3] – hydrolyses in contact with water – it's a diamond like compound (a III-VI semiconductor) – highly covalent character

Calcium:

  • CaC2 Calcium carbide [4] – must be kept dry – releases ethyne on contact with water
  • Ca3N2 calcium nitride [5] – highly reactive with water

Magnesium:

  • Mg3N2(s) Magnesium nitide [6] – reacts with water
  • Magnesium carbide ??

Compounds with more rare elements

Nitrides:

Carbides:

4th period:

5th period:

  • ZrC (3532 °C; extremely hard; highly corrosion resistant; very metallic, cubic)
  • Nb2C (3490 °C; extremely hard; highly corrosion resistant)
  • Mo2C (2692 °C) [7]; MoC; Mo3C2 [8]

6th period:

Borides:

Related

External links

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