Talk:Cementite

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Charge of Fe?[edit]

Since carbide ion is 4- (when there is one carbon), what are the charges on the 3 Fe ions? Are they +1,+1 and +2? Or is there an error?RSido 01:25, 14 November 2007 (UTC)

I'm not convinced that you can assign clear oxidation numbers to the atoms in this structure. You might as well assign 0 to all atoms and think of it as an alloy! --Itub 19:22, 14 November 2007 (UTC)
See my formula. -lysdexia 11:03, 13 March 2008 (UTC)


Composition in Weight Ratios[edit]

There is no mention of the composition in terms of percentage weight of carbon and iron for cementite in eutectoid structures. This is a pretty important number for applications in material science, the application with which information abut this substance is primarily concerned. I just think if people are looking up this article, it may very well be to find this value (its the reason I looked it up). Anyone have any thoughts regarding this? If no one has any complaints I'll add it within a day or two.Tracorn (talk) 07:21, 8 May 2009 (UTC)

Reaction with acids[edit]

Does anyone have some information on how cemetite reacts with acids on dissolution of steel. Will there be a carbon residue? Will it form methane? Will oxidizing acids convert it to carbon dioxide? —Preceding unsigned comment added by 150.227.15.253 (talk) 13:59, 24 September 2010 (UTC)

Mass of Fe3C ?[edit]

After research, i could not find the volumic mass of Fe3C anywhere. Could someone please indicate it ? — Preceding unsigned comment added by 195.83.11.66 (talk) 15:06, 9 April 2013 (UTC)