Magnetic Properties of Thermal Sprayed Tungsten Carbide–Cobalt Coatings

In the information age, the storage and accessibility of data is of vital importance. There are several possibilities to fulfill this task. Magnetic storage of data is a well‐established method and the range of materials used is continuously extended. In this study, the magnetic remanence of thermal...

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Bibliographic Details
Published inAdvanced engineering materials Vol. 20; no. 9
Main Authors Angrisani, Gian Luigi, Taptimthong, Piriya, Thürer, Susanne Elisabeth, Klose, Christian, Maier, Hans Jürgen, Wurz, Marc Christopher, Möhwald, Kai
Format Journal Article
LanguageEnglish
Published 01.09.2018
Subjects
magnetic storage
magneticremanence
thermal spray
tungsten carbide‐cobalt coatings
WCCo
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Summary:In the information age, the storage and accessibility of data is of vital importance. There are several possibilities to fulfill this task. Magnetic storage of data is a well‐established method and the range of materials used is continuously extended. In this study, the magnetic remanence of thermally sprayed tungsten carbide–cobalt (WCCo)‐coatings in dependence of their thickness is examined. Two magnetic fields differing in value and geometry are imprinted into the coatings and the resulting remanence field is measured. It is found that there are two effects, which in combination determine the effective value of the magnetic remanence usable for magnetic data storage. Magnetic properties of ferromagnetic WCCo coatings applied using the HVOF thermal spray process are investigated. After identifying the phases and their distribution in the coatings, the specimens are magnetized and the resulting magnetic remanence is quantified. The results are discussed in terms of layer thickness and magnetic field strength.
ISSN:1438-1656
1527-2648
DOI:10.1002/adem.201800102