Abstract
Plate-type specimens were cut from three different types of tungsten sheets fabricated under distinct rolling and heat treatment conditions in the directions parallel or perpendicular to the rolling planes. Amorphous carbon films were prepared by vacuum deposition on the specimen surfaces. Then, the specimens were heated at 1073 K in vacuum, and reaction products were analyzed by means of X-ray diffraction. The carbide formed was W2C and no peak of WC appeared. The growth rate of W2C was independent of the cutting directions of the specimens, although the grain boundary densities at the specimen surfaces were quite different. On the other hand, the rate of W2C growth was dependent on both reduction and heat treatment conditions, and a specimen with higher hardness showed a higher growth rate. By taking account of the observations by a transmission electron microscope, it was concluded that dislocations play important roles in W2C growth.
| Original language | English |
|---|---|
| Pages (from-to) | 902-906 |
| Number of pages | 5 |
| Journal | Journal of Nuclear Materials |
| Volume | 337-339 |
| Issue number | 1-3 SPEC. ISS. |
| DOIs | |
| Publication status | Published - Mar 1 2005 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Nuclear Energy and Engineering
- Materials Science(all)
Cite this
Influence of microstructure of tungsten on solid state reaction rate with amorphous carbon film. / Hatano, Y.; Takamori, M.; Nogita, Kazuhiro; Matsuda, K.; Ikeno, S.; Watanabe, K.
In: Journal of Nuclear Materials, Vol. 337-339, No. 1-3 SPEC. ISS., 01.03.2005, p. 902-906.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Influence of microstructure of tungsten on solid state reaction rate with amorphous carbon film
AU - Hatano, Y.
AU - Takamori, M.
AU - Nogita, Kazuhiro
AU - Matsuda, K.
AU - Ikeno, S.
AU - Watanabe, K.
PY - 2005/3/1
Y1 - 2005/3/1
N2 - Plate-type specimens were cut from three different types of tungsten sheets fabricated under distinct rolling and heat treatment conditions in the directions parallel or perpendicular to the rolling planes. Amorphous carbon films were prepared by vacuum deposition on the specimen surfaces. Then, the specimens were heated at 1073 K in vacuum, and reaction products were analyzed by means of X-ray diffraction. The carbide formed was W2C and no peak of WC appeared. The growth rate of W2C was independent of the cutting directions of the specimens, although the grain boundary densities at the specimen surfaces were quite different. On the other hand, the rate of W2C growth was dependent on both reduction and heat treatment conditions, and a specimen with higher hardness showed a higher growth rate. By taking account of the observations by a transmission electron microscope, it was concluded that dislocations play important roles in W2C growth.
AB - Plate-type specimens were cut from three different types of tungsten sheets fabricated under distinct rolling and heat treatment conditions in the directions parallel or perpendicular to the rolling planes. Amorphous carbon films were prepared by vacuum deposition on the specimen surfaces. Then, the specimens were heated at 1073 K in vacuum, and reaction products were analyzed by means of X-ray diffraction. The carbide formed was W2C and no peak of WC appeared. The growth rate of W2C was independent of the cutting directions of the specimens, although the grain boundary densities at the specimen surfaces were quite different. On the other hand, the rate of W2C growth was dependent on both reduction and heat treatment conditions, and a specimen with higher hardness showed a higher growth rate. By taking account of the observations by a transmission electron microscope, it was concluded that dislocations play important roles in W2C growth.
UR - http://www.scopus.com/inward/record.url?scp=13844310038&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=13844310038&partnerID=8YFLogxK
U2 - 10.1016/j.jnucmat.2004.10.098
DO - 10.1016/j.jnucmat.2004.10.098
M3 - Article
AN - SCOPUS:13844310038
VL - 337-339
SP - 902
EP - 906
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
SN - 0022-3115
IS - 1-3 SPEC. ISS.
ER -