NounWikipedia has an article on: CementiteSingular cementite Plural uncountable cementite (uncountable)
ItalianNounItalian Wikipedia has an article on: Cementitecementite f. (plural cementiti)
From Wiktionary under the GNU Free Documentation License. Cementite, also known as iron carbide, is a chemical compound of iron and carbon, with the formula Fe3C (or Fe2C:Fe). It is 6.67 percent carbon and 93.3% iron. It has an orthorhombic crystal structure. It is a hard, brittle material, normally classified as a ceramic in its pure form, though it is more important in metallurgy. MetallurgyThe iron-carbon phase diagramIn the iron–carbon system (i.e. plain-carbon steels and cast irons) it is a common constituent because at room temperature ferrite (essentially, the pure iron phase) can only hold 0.02% in solution. Therefore, in carbon steels and cast irons that are slowly cooled a portion of the elements are in the form of cementite. It forms directly from the melt in the case of white cast iron. In carbon steel, it either forms from austenite during cooling or from martensite during tempering. An intimate mixture with ferrite, the other product of austenite, forms a lamellar structure called pearlite. From Wikipedia under the
GNU Free Documentation License Why is cementite stronger than ferrite? Q. regarding structure, factors concerned... Asked by hello!!!! - Mon May 18 02:59:00 2009 - - 1 Answers - 0 Comments A. It isn't. Ferrite a A LOT stronger then Cementite (Iron Carbide) in terms of tensile strength (which is generally how such things are measured). Ferrite has a tensile strength of around 280 N/mm^2 Cementite has a tensile strength of around 35 N/mm^2 Answered by GEadon - Mon May 18 19:41:33 2009 carbon steel question, multichoice. need help? Q. If a 0.8% C steel is heated to 650 C then the microstructure would contain? (a) Cementite only (b) Austenite only (c) Ferrite and Austenite (d) Pearlite only Asked by Bolter - Mon Nov 10 20:20:07 2008 - - 1 Answers - 0 Comments material science questions, plz tell me the reason?
Q. 5. Which of the descriptions are true for gray cast iron? (three corrected answers) (A)The carbon contents vary between 2.5 and 4.0 wt%. (B) Cementite formation is promoted by the presence of silicon in concentrations greater than about 1%. (C) The cementite exists in the form of flakes. (D) Gray iron is comparatively weak and brittle in tension. (E) Gray irons are very effective in damping vibrational energy. 6. Heating white cast iron at temperatures between 800 and 900 for a prolonged time period and in a neutral atmosphere (to prevent oxidation) produces which of the following alloy? (A) Ductile cast iron, (B) Gray cast iron, (C) Malleable cast iron, (D) Nodular iron, or (E) Tempered martensite. Asked by Sunny - Sun Jun 14 21:21:16 2009 - - 1 Answers - 0 Comments A. By now you would have turned this paper in, but I would have to say 5.: D and 6.: C. Answered by He Lives! - Thu Jun 18 13:21:03 2009 From Yahoo Answer Search: "cementite"  news.google.com il Giornale A dir poco drammatica per l'architetto Cervellati, causa la cementite acuta che ha seppellito il Belpaese. Ogni citta ha indicato un'area pilota dove ... and more » news.google.com SassariNotizie.com Il pannello realizzato da Giuseppe Bellino di grandi dimensioni (1,83 per 5 metri) e un multistrato con fondo di cementite dipinto ad olio con spatola, ... news.google.com Savona news Molti ritengono che la passeggiata a mare sia stata concepita da un'Amministrazione in preda al virus della cementite acuta ; anche Piazza Italia avrebbe ... and more » From Google News Search: "cementite"  msm.cam.ac.uk 348px x 395px | 62.20kB [source page] 3 jpg 17 Oct 2004 12 45 58K 7 jpg 17 Oct 2004 12 45 58K 9 jpg 17 Oct 2004 12 45 62K 11 jpg 17 Oct 2004 12 45 64K  msm.cam.ac.uk 349px x 376px | 64.00kB [source page] 11 jpg 17 Oct 2004 12 45 64K 12 jpg 17 Oct 2004 12 45 15K 13 jpg 17 Oct 2004 12 45 64K  info.lu.farmingdale.edu 378px x 504px | 41.60kB [source page] Iron Iron Carbide Diagram Figure 1 Iron ironcarbide diagram cementite fe3C From Yahoo Image Search: "cementite"  materialengineeringsociety.blogspot.com Material Engineering Society Fri, 01 Feb 2008 09:21:00 GM ageing at 200 c and above leads to the second stage of ageing in which orthorhombic . cementite. fe3c is formed as platelets on {110} . often the platelets grow on several {110} planes from a common centre giving rise to structures which ... From Google Blog Search: "cementite" |
