Sigmaplug - a new temperature indicator for remaining life assessment of high temperature components

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Original languageEnglish
Pages (from-to)101-104
Journal / PublicationActa Metallurgica Sinica (English Letters)
Issue number1
Publication statusPublished - 1999


An invention called Sigmaplug was described, and it is a new development of the Feroplug but using an entirely different physical principle. It was discovered that the sigma phase in Feroplug materials undergoes a ferromagnetic transition at low temperatures and this property can be used to indicate temperature. The new Sigmaplug can extend the operating temperature range of the Feroplug.