Joining of oxidation-resistant Mo-Si-B multiphase alloy to heat-resistant Mo-ZrC in-situ composite

N. Nomura, T. Suzuki, S. Nakatani, K. Yoshimi, S. Hanada

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Joining of oxidation-resistant Mo-Si-B multiphase alloy and to heat-resistant Mo-ZrC in-situ composite was studied through observation of microstructural evolution and measurement of hardness near the joint interface. As jointed at 1773 K for 7.2 ks, Mo3Si is formed in Mo-ZrC because of the non-equilibrium state between Mo and Mo5Si3. As jointed at 1973 K for 5.4 ks, a reactant containing Mo, Zr and Si is formed along the interface between Mo-Si-B and Mo-ZrC. Si is enriched in prior ZrC particles away from the interface in distances of 0 to about 4 μm. The hardness of Mo-ZrC after jointed at 1773 K shows no change near the joint interface in the range beyond 5 μm. On the other hand, the hardness values of Mo-ZrC jointed at 1973 K increases in the range of 0-10 μm. This indicates that Si diffuses at least by 10 μm into Mo in Mo-ZrC during bonding at 1973 K for 5.4 ks.

Original languageEnglish
Pages (from-to)51-56
Number of pages6
JournalIntermetallics
Volume11
Issue number1
DOIs
Publication statusPublished - 2003 Jan

Keywords

  • A. Molybdenum silicides
  • B. Phase identification
  • C. Joining

ASJC Scopus subject areas

  • Chemistry(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Joining of oxidation-resistant Mo-Si-B multiphase alloy to heat-resistant Mo-ZrC in-situ composite'. Together they form a unique fingerprint.

Cite this