Study on nickel ferrite formation by using a simple method to simulate heat transfer surface

Jei Won Yeon*, Kwang Soon Choi, Yongju Jung, Selvaraj Rengaraj, Yeong Keong Ha, Won Ho Kim

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

The condition of a heat transfer surface with boiling is composed of three environmental components; high temperature, high pressure and water vapor. In general an autoclave or a high temperature loop system is used for maintaining the required condition. The thermodynamic relationship of chemical reactions states that the free energy difference (ΔG) is clearly dependent on the reaction temperature and independent of the reaction pressure if the reaction has no volume change: (∂ΔG/∂P)T = ΔV ∼ 0. Based on the above relationship, the high-pressure term was removed from the environmental components of the heat transfer surface. A vacuum quartz capsule with a moisturized metal oxide powder was used to study the formation of nickel ferrite. The feasibility of this simplified method to simulate a heat transfer surface was confirmed by an analysis of the FT-IR spectra and XRD pattern during the transformation of a nickel and iron mixed oxide into nickel ferrite.

Original languageEnglish
Title of host publicationAdvances in Nanomaterials and Processing - IUMRS - ICA - 2006 International Conference in Asia
PublisherTrans Tech Publications Ltd
Pages1565-1568
Number of pages4
EditionPART 2
ISBN (Print)3908451310, 9783908451310
DOIs
Publication statusPublished - 2007
Externally publishedYes
EventIUMRS International Conference in Asia 2006, IUMRS-ICA 2006 - Jeju, Korea, Republic of
Duration: Sept 10 2006Sept 14 2006

Publication series

NameSolid State Phenomena
NumberPART 2
Volume124-126
ISSN (Print)1012-0394

Other

OtherIUMRS International Conference in Asia 2006, IUMRS-ICA 2006
Country/TerritoryKorea, Republic of
CityJeju
Period9/10/069/14/06

Keywords

  • FT-IR
  • Heat transfer surface
  • High temperature
  • Nickel and iron mixed oxide
  • Nickel ferrite
  • Transformation
  • XRD

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • General Materials Science
  • Condensed Matter Physics

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