Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/4978
DC FieldValueLanguage
dc.contributorDepartment of Applied Physics-
dc.contributorDepartment of Industrial and Systems Engineering-
dc.creatorCheng, FT-
dc.creatorMan, HC-
dc.creatorChan, WM-
dc.creatorCheng, CW-
dc.creatorChan, WO-
dc.date.accessioned2014-12-11T08:28:21Z-
dc.date.available2014-12-11T08:28:21Z-
dc.identifier.issn0021-8979-
dc.identifier.urihttp://hdl.handle.net/10397/4978-
dc.language.isoenen_US
dc.publisherAmerican Institute of Physicsen_US
dc.rights© 1999 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in F. T. Cheng et al., J. Appl. Phys. 85, 5690 (1999) and may be found at http://link.aip.org/link/?jap/85/5690.en_US
dc.subjectPermanent magnetsen_US
dc.subjectNeodymium alloysen_US
dc.subjectIron alloysen_US
dc.subjectBoron alloysen_US
dc.subjectCorrosion protectionen_US
dc.subjectCorrosion protective coatingsen_US
dc.subjectPolymer filmsen_US
dc.subjectAdhesionen_US
dc.subjectCorrosion testingen_US
dc.subjectWear resistanceen_US
dc.subjectVickers hardnessen_US
dc.subjectMagnetisationen_US
dc.subjectFerromagnetic materialsen_US
dc.titleCorrosion protection of Nd–Fe–B magnets by bismaleimide coatingen_US
dc.typeJournal/Magazine Articleen_US
dc.description.otherinformationAuthor name used in this publication: F. T. Chengen_US
dc.identifier.spage5690-
dc.identifier.epage5692-
dc.identifier.volume85-
dc.identifier.issue8-
dc.identifier.doi10.1063/1.369842-
dcterms.abstractSamples of Nd–Fe–B were coated with bismaleimide (BMI), a resin which is well known for its desirable barrier, mechanical, and thermal properties but has not been used as a coating material. The performance of BMI-coated samples (average coating thickness ~15 μm) was compared with commercial epoxy-coated samples (average coating thickness ~20 μm) in a series of tests. In the copper-accelerated acetic acid–salt spray test, the epoxy-coated samples failed badly (damaged area >50%) within 20 h while the BMI-coated samples showed no sign of failure up to 200 h. Using the cross-cut tape test for adhesion strength (ASTM D 3359), the commercial epoxy coatings suffered 25% area detachment while for the BMI coatings, no detachment was observed. The scratch resistance of the BMI coatings, measured in terms of scratch depth in the pin scratch test, was about 1.5 that of the commercial epoxy coatings, and the Vickers hardness was higher by a factor of about 2.5. When magnetized under the same magnetizing field, there was no significant difference in the magnetization obtained among bare, epoxy-coated, and BMI-coated samples. These results suggest that BMI coatings are excellent for protection of the Nd–Fe–B magnets against corrosion and function better than the commonly used epoxy resin.-
dcterms.bibliographicCitationJournal of applied physics, 15 Apr. 1999, v. 85, no. 8, p. 5690-5692-
dcterms.isPartOfJournal of applied physics-
dcterms.issued1999-04-15-
dc.identifier.isiWOS:000079853500135-
dc.identifier.scopus2-s2.0-4143050476-
dc.identifier.eissn1089-7550-
dc.description.oapublished_final-
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