Abstract
It is important to understand the mechanical properties of single phase cementite in order to design the microstructure of advanced steels. Several papers have been published on mechanical properties of cementite embedded in steels or extracted from steels by electrolysis. However, single phase cementite is not documented. The purpose of this study is to prepare cementite films by the PVD method and to characterize their properties. We applied the electron-shower-assisted PVD method in order to produce a single phase cementite film (2.5 μm in thickness) in a C2H2 atmosphere at 523 K. The composition of the film was determined to be 70Fe-28C-2O (at.%). ESCA spectra indicated that the film was not contaminated with other metallic elements. The grain size of the film was revealed to be about 50 nm by AFM. The Vickers hardness was 1230 (under a load of 2.5 g) at room temperature, nearly equal to the value of 1270 of the cementite extracted from carbon steel by electrolysis. Temperature dependence of the hardness was measured up to 673 K. Young's modulus and Poisson's ratio at room temperature were 160 GPa and 0.26, respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 100-104 |
| Number of pages | 5 |
| Journal | Thin Solid Films |
| Volume | 316 |
| Issue number | 1-2 |
| Publication status | Published - 1998 Mar 21 |
| Externally published | Yes |
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Keywords
- Cementite film
- Electron-shower-assisted PVD
- Single phase
ASJC Scopus subject areas
- Surfaces, Coatings and Films
- Condensed Matter Physics
- Surfaces and Interfaces
Cite this
Characterization of cementite films prepared by electron-shower-assisted PVD method. / Li, S. J.; Ishihara, M.; Yumoto, H.; Aizawa, T.; Shimotomai, M.
In: Thin Solid Films, Vol. 316, No. 1-2, 21.03.1998, p. 100-104.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Characterization of cementite films prepared by electron-shower-assisted PVD method
AU - Li, S. J.
AU - Ishihara, M.
AU - Yumoto, H.
AU - Aizawa, T.
AU - Shimotomai, M.
PY - 1998/3/21
Y1 - 1998/3/21
N2 - It is important to understand the mechanical properties of single phase cementite in order to design the microstructure of advanced steels. Several papers have been published on mechanical properties of cementite embedded in steels or extracted from steels by electrolysis. However, single phase cementite is not documented. The purpose of this study is to prepare cementite films by the PVD method and to characterize their properties. We applied the electron-shower-assisted PVD method in order to produce a single phase cementite film (2.5 μm in thickness) in a C2H2 atmosphere at 523 K. The composition of the film was determined to be 70Fe-28C-2O (at.%). ESCA spectra indicated that the film was not contaminated with other metallic elements. The grain size of the film was revealed to be about 50 nm by AFM. The Vickers hardness was 1230 (under a load of 2.5 g) at room temperature, nearly equal to the value of 1270 of the cementite extracted from carbon steel by electrolysis. Temperature dependence of the hardness was measured up to 673 K. Young's modulus and Poisson's ratio at room temperature were 160 GPa and 0.26, respectively.
AB - It is important to understand the mechanical properties of single phase cementite in order to design the microstructure of advanced steels. Several papers have been published on mechanical properties of cementite embedded in steels or extracted from steels by electrolysis. However, single phase cementite is not documented. The purpose of this study is to prepare cementite films by the PVD method and to characterize their properties. We applied the electron-shower-assisted PVD method in order to produce a single phase cementite film (2.5 μm in thickness) in a C2H2 atmosphere at 523 K. The composition of the film was determined to be 70Fe-28C-2O (at.%). ESCA spectra indicated that the film was not contaminated with other metallic elements. The grain size of the film was revealed to be about 50 nm by AFM. The Vickers hardness was 1230 (under a load of 2.5 g) at room temperature, nearly equal to the value of 1270 of the cementite extracted from carbon steel by electrolysis. Temperature dependence of the hardness was measured up to 673 K. Young's modulus and Poisson's ratio at room temperature were 160 GPa and 0.26, respectively.
KW - Cementite film
KW - Electron-shower-assisted PVD
KW - Single phase
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UR - http://www.scopus.com/inward/citedby.url?scp=0032027593&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0032027593
VL - 316
SP - 100
EP - 104
JO - Thin Solid Films
JF - Thin Solid Films
SN - 0040-6090
IS - 1-2
ER -