Investigation on W/Fe diffusion bonding using Ti foil and Ti powder interlayer by SPS
Creators
- 1. School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009 (China)
- 2. National–Local Joint Engineering Research Centre of Nonferrous Metals and Processing Technology, Hefei 230009 (China)
- 3. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 (China)
Description
W/steel composites are being developed for potential application in He gas-cooled divertors and plasma-facing components in fusion reactors. In this study, the dissimilar metal joints between W and Fe were fabricated at 950 °C via spark plasma sintering method with Ti foil (Ti–F) and Ti powder (Ti–P) as the interlayer under Ar atmosphere for 5 min at 57 MPa. Microscopic structures of the W/Fe diffusion joints with Ti–F and Ti–P were investigated and compared via field-emission scanning electron microscopy and energy-dispersive X-ray spectroscopy. Thermal cycling tests were employed to measure the thermal stability of different types of W/Ti/Fe samples. The hardness distribution across joining interfaces was also determined. After thermal cycling tests, a crack occurred along the W/Ti–P interface in the W/Ti–P/Fe samples, whereas the W/Ti–F/Fe samples were intact at the interfaces. Results revealed that Ti–F is more suitable as an interlayer than Ti–P, and the interfaces of the W/Ti–F/Fe samples have better thermal stability than those of the W/Ti–P/Fe ones.
Availability note (English)
Available from http://dx.doi.org/10.1016/j.jnucmat.2015.10.045Additional details
Identifiers
- DOI
- 10.1016/j.jnucmat.2015.10.045;
- PII
- S0022-3115(15)30291-9;
Publishing Information
- Journal Title
- Journal of Nuclear Materials
- Journal Volume
- 467
- Journal Issue
- Part 2
- Journal Page Range
- p. 566-571
- ISSN
- 0022-3115
- CODEN
- JNUMAM
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 48034665
- Subject category
- S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- ATMOSPHERES; BONDING; COMPARATIVE EVALUATIONS; CRACKS; DIFFUSION; FIELD EMISSION; FIRST WALL; FOILS; HARDNESS; INTERFACES; PLASMA; POWDERS; PRESSURE RANGE MEGA PA 10-100; SCANNING ELECTRON MICROSCOPY; SINTERING; STEELS; TEMPERATURE RANGE 1000-4000 K; THERMAL CYCLING; TITANIUM; X-RAY SPECTROSCOPY
- Descriptors DEC
- ALLOYS; CARBON ADDITIONS; ELECTRON MICROSCOPY; ELEMENTS; EMISSION; EVALUATION; FABRICATION; IRON ALLOYS; IRON BASE ALLOYS; JOINING; MECHANICAL PROPERTIES; METALS; MICROSCOPY; PRESSURE RANGE; PRESSURE RANGE MEGA PA; SPECTROSCOPY; TEMPERATURE RANGE; THERMONUCLEAR REACTOR WALLS; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENTS
Optional Information
- Copyright
- Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.