Degradation of passivated iron particles in humid atmospheres

Ching Shan Jung; Srini Raghavan; Roy Emrick

doi:10.1109/20.333990

Degradation of passivated iron particles in humid atmospheres

Ching Shan Jung, Srini Raghavan, Roy Emrick

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

The interaction of water vapor with passivated iron particles used in magnetic recording was studied under different temperature and humidity conditions using a flow microcalorhoetric (FMC) technique. Water uptake by passivated iron particles increased linearly with relative humidity ranging from 30% to 70% RH in the temperature range 30ºC to 70ºC, Mössbauer measurements showed that the ratio of core iron to oxide iron decreased during aging. Particles coated with hydrophobic PVC exhibited much less water uptake than particles coated with a less hydrophobic polymer, poly(vinyl alcohol).

Original language	English (US)
Pages (from-to)	4065-4067
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	30
Issue number	6
DOIs	https://doi.org/10.1109/20.333990
State	Published - Nov 1994

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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title = "Degradation of passivated iron particles in humid atmospheres",

abstract = "The interaction of water vapor with passivated iron particles used in magnetic recording was studied under different temperature and humidity conditions using a flow microcalorhoetric (FMC) technique. Water uptake by passivated iron particles increased linearly with relative humidity ranging from 30\% to 70\% RH in the temperature range 30ºC to 70ºC, M{\"o}ssbauer measurements showed that the ratio of core iron to oxide iron decreased during aging. Particles coated with hydrophobic PVC exhibited much less water uptake than particles coated with a less hydrophobic polymer, poly(vinyl alcohol).",

author = "Jung, \{Ching Shan\} and Srini Raghavan and Roy Emrick",

note = "Funding Information: The authors wish to acknowledge many technical discus- sions with Dr. M. C. A. Mathur, Dr. R. Bradshaw and Dr. G. Hudson. Partial financial support from IBM is gratefully acknowledged.",

year = "1994",

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AU - Jung, Ching Shan

AU - Raghavan, Srini

AU - Emrick, Roy

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PY - 1994/11

Y1 - 1994/11

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AB - The interaction of water vapor with passivated iron particles used in magnetic recording was studied under different temperature and humidity conditions using a flow microcalorhoetric (FMC) technique. Water uptake by passivated iron particles increased linearly with relative humidity ranging from 30% to 70% RH in the temperature range 30ºC to 70ºC, Mössbauer measurements showed that the ratio of core iron to oxide iron decreased during aging. Particles coated with hydrophobic PVC exhibited much less water uptake than particles coated with a less hydrophobic polymer, poly(vinyl alcohol).

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JF - IEEE Transactions on Magnetics

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Degradation of passivated iron particles in humid atmospheres

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