Fe3C
Cementite · Iron carbide
Cementite is a metastable iron carbide compound that acts as a key hardening phase in steel and iron alloys.
About Cementite
Cementite is a metastable interstitial compound formed between iron and carbon. As a critical constituent in the iron-carbon system, it plays a vital role in determining the mechanical properties of various steels and cast irons, where its presence significantly influences hardness and wear resistance.
Characterized by its semiconducting electronic nature, this compound is a subject of extensive structural study due to its complex lattice arrangements. Its thermodynamic metastability makes it a fascinating material for researchers investigating phase transformations and the kinetics of alloy formation.
Key Properties
Cross-validated computational properties for Cementite, aggregated across 4 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Synthesis Routes
Literature-extracted synthesis procedures targeting Fe3C.
Applications
Where Cementite is used.
Frequently Asked Questions
Common questions about Cementite, answered from cross-validated data.
What is Fe3C?
Cementite is a metastable iron carbide compound that acts as a key hardening phase in steel and iron alloys.
What is Fe3C used for?
What is the band gap of Fe3C?
Is Fe3C a metal, semiconductor, or insulator?
Is Fe3C thermodynamically stable?
How many polymorphs of Fe3C are known?
How is Fe3C synthesized?
What elements does Fe3C contain?
Where does the data for Fe3C come from?
How It Compares
As a foundational phase in metallurgy, Fe3C serves as the primary hard, brittle component that defines the performance characteristics of carbon steels, standing as the essential reference point for understanding phase stability in iron-based alloys.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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