Three dimensional estimation of multi-component inclusion particle in steel

Inoue Ryo, Kiyokawa Kei, Tomoda Koichiro, Ueda Shigeru, Ariyama Tatsuro

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


In this study, the potentiostatic and galvanostatic extraction methods using nonaqueous electrolytes have been examined for the extraction of various inclusion particles. It was concluded that 4%MS(4%(V/V) methylsalicylate-1%(V/V)tetramethylammoniumchloride-methanol) and 10%AA (10%(V/V)acetylacetone-1%(1%(m/V)salicylic acid-1%(m/V)tetramethylammoniumchloride-methanol) electrolytes were suitable to the extraction of TiO x and TIAl 2O 5. Though those electrolytic extraction methods are available for the extraction of chemically unstable inclusion particles, the position of each inclusion existed in metal cannot be specified because the observation of inclusions is carried out on a film filter after extraction. For the specification of inclusion position in metal, the light etching using halogen-alcohol was applied to appear the inclusion particles near the surface of steel sample, which was deoxidized by Ti and Al. The morphology, size and segregation of elements on the fine inclusion particle were estimated using a scanning electron microscopy and auger electron spectroscopy (AES). Then, the microsegregation of elements on the cross section of fine inclusion particle, which was prepared by a focused ion beam, was estimated using a low acceleration energy-scanning electron microscopy and AES. Based on these results, the formation mechanism of multi-component inclusion particle was discussed.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalYejin Fenxi/Metallurgical Analysis
Issue number8
Publication statusPublished - 2012 Aug


  • Auger electron spectroscopy
  • Focused ion beam
  • Formation mechanism
  • Light etching
  • Multi-component inclusion
  • Three dimensional estimation


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