Fabrication of La2O3 dispersed Mo-Si-B alloys and its mechanical properties

Won June Choi, Chun Woong Park, Jung Hyo Park, Jong Min Byun, Young Do Kim

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Refractory metal has been spotlighted as one of the next-generation high-temperature materials. Among the refractory metal, molybdenum (Mo) has a possibility to substitute for high-temperature materials in use currently due to its high melting point. Especially, Mo-Si-B alloys which are added silicon and boron have more potential because of its superior mechanical properties and improved oxidation resistance at elevated temperature. In addition, there are several attempts to add a 4th element in Mo-Si-B alloys recently. In this study, we introduce the La2O3 dispersed Mo-Si-B alloys and its mechanical properties. The Mo-Si-B-La2O3 alloys were fabricated by powder metallurgy and chemical reaction process. Its microstructure and distribution of oxide particle was observed by SEM and TEM analysis. Fracture toughness was measured by 3-point bending test and its fracture surface was observed by SEM.

Original languageEnglish
Title of host publicationMS and T 2019 - Materials Science and Technology 2019
PublisherMaterials Science and Technology
Pages1194-1201
Number of pages8
ISBN (Electronic)0873397703, 9780873397704
DOIs
StatePublished - 2019
EventMaterials Science and Technology 2019, MS and T 2019 - Portland, United States
Duration: 29 Sep 20193 Oct 2019

Publication series

NameMS and T 2019 - Materials Science and Technology 2019

Conference

ConferenceMaterials Science and Technology 2019, MS and T 2019
Country/TerritoryUnited States
CityPortland
Period29/09/193/10/19

Keywords

  • Core-shell powder
  • Fracture toughness
  • La2O3 particle
  • Mo-Si-B alloys

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