Hostname: page-component-8448b6f56d-42gr6 Total loading time: 0 Render date: 2024-04-18T10:57:11.906Z Has data issue: false hasContentIssue false
  • English
  • Français

Defect Structures and Planar Faults in Plasma Spray Deposited MoSi2

Published online by Cambridge University Press:  01 January 1992

Bimal K. Kad ,
Kenneth S. Vecchio  and
Robert J. Asaro
Bimal K. Kad
Affiliation:
Dept. of Applied Mechanics and Engineering Sciences, MC-0411University of California-SanDiego, LaJolla, CA 92093-0411
Kenneth S. Vecchio
Affiliation:
Dept. of Applied Mechanics and Engineering Sciences, MC-0411University of California-SanDiego, LaJolla, CA 92093-0411
Robert J. Asaro
Affiliation:
Dept. of Applied Mechanics and Engineering Sciences, MC-0411University of California-SanDiego, LaJolla, CA 92093-0411
Get access

Abstract

Plasma-sprayed microstructures of MoSi2 have been studied by electron microscopy. The as-deposited microstructures are metastable and inhomogenous. Two new dissociations of [001] and 1/2[331] dislocations have been observed for the first time. The 1/2[331] is dissociated on the (lTO) plane bounding a superlattice intrinsic stacking fault (SISF). The reaction is given as: 1/2[331] = 1/4[331] + SISF + [331]. The [001] is also dissociated on (110) plane into two symmetrical components, with the reaction being given as [001] = 1/2[001] + 1/2[001].

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 288: Symposium L – High-Temperature Ordered Intermetallic Alloys V , 1992 , 1123
Copyright
Copyright © Materials Research Society 1995

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Mescheter, P.J. and Schwartz, D.S., J. Met., 11 (1989) 52 Google Scholar
2. Aikin, R.M. Jr., Mat. Sci. & Eng., A155 (1992) 121 Google Scholar
3. Tiwari, R., Sampath, S. and Herman, H., Mater. Res. Soc. Symp. proc., 213 (1991) 807 Google Scholar
4. Castro, R.G., Smith, R.W., Rollett, A.D. and Stanek, P., Mat. Sci. & Eng., A155 (1992) 101 Google Scholar
5. Kimura, K., Nakamura, M. and Hirano, T., J. Mat. Sci, 25 (1990) 2487 Google Scholar
6. Umakoshi, Y., Sakagami, T., Hirano and, T. Yamane, T., Acta. Met. 38 No.6 (1990) 909 Google Scholar
7. Mitchell, T.E., Castro, R.G. and Chadwick, M.M., Phil. Mag., A65, (1992) 1339 Google Scholar
8. Vecchio, K.S., Yu, L. S. and Meyers, M.A., Acta. Met., in review Google Scholar
9. Hazzledine, M., private communication Google Scholar
10. Maloy, S. A., Mitchell, T.E., Lewandowski, J.J. and Heuer, A.H., Phil. Mag. Lett, in review Google Scholar
11. Rao, Satish I., Dimiduk, Dennis M. and Mendiratta, Madan G., Phil. Mag., in review Google Scholar