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真空热扩渗动力学方程参数原位表征的阻抗谱模型

Translated title of the contribution: Impedance spectrum model of in-situ characterization of parameters of dynamic equation of vacuum thermal diffusion
  • Harbin Institute of Technology
  • Beijing Research Institute of Mechanical & Electrical Technology

Research output: Contribution to journalArticlepeer-review

Abstract

Biot number characterization methods associated with pure diffusion, reaction diffusion, and mixed diffusion control were proposed to characterize the thickness of the sample. Impedance spectroscopy models of the bulk diffusion coefficient (D) and surface transfer coefficient (β) of vacuum carburizing/nitriding process were established for in-situ characterization of the kinetic process. The simulation and experimental results show that the impedance spectrum correlates to the Biot number, and clearly shows the reaction-diffusion mechanism,, and the values of the bulk diffusion coefficient and the surface transfer coefficient can be obtained accurately.

Translated title of the contributionImpedance spectrum model of in-situ characterization of parameters of dynamic equation of vacuum thermal diffusion
Original languageChinese (Traditional)
Pages (from-to)129-134
Number of pages6
JournalCailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment
Volume41
Issue number12
DOIs
StatePublished - 25 Dec 2020
Externally publishedYes

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