NDLI: Influence of Metal Properties on the Formation and Evolution of Metal Coatings During Mechanical Coating

Content Provider	Springer Nature Link
Author	Hao, Liang Lu, Yun Sato, Hiromasa Asanuma, Hiroshi Guo, Jie
Copyright Year	2013
Abstract	Powders of Cu, Ti, Ni, Fe, and Zn metals were used to prepare coatings on the surfaces of Al$_{2}$O$_{3}$ balls by the mechanical coating technique. The coated Al$_{2}$O$_{3}$ balls were characterized with XRD and SEM. The results showed that all the metal powders except Ni formed continuous metal coatings. The evolution of metal coatings during mechanical coating was also investigated. The analysis indicates that as long as continuous metal coatings can be formed, the evolution can fall into the following stages: nucleation, formation and coalescence of discrete islands, formation and thickening of continuous coatings, and exfoliation of continuous coatings. Electronegativity of the metal was shown to have a major effect on the adhesion of the tiny metal particles on the surfaces of the Al$_{2}$O$_{3}$ balls during the initial stage of mechanical coating. The lower the electronegativity of the metal, the greater the coverage of the metal on the Al$_{2}$O$_{3}$ ball and the easier the adhesion of the tiny metal particles. Further, the better the plastic deformability of metal, the easier the cold welding among metal powder particles and the greater the thickness of the continuous metal coatings.
Starting Page	2717
Ending Page	2724
Page Count	8
File Format	PDF
ISSN	10735623
Journal	Metallurgical and Materials Transactions A
Volume Number	44
Issue Number	6
e-ISSN	15431940
Language	English
Publisher	Springer US
Publisher Date	2013-02-01
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Metallic Materials Characterization and Evaluation of Materials Structural Materials Surfaces and Interfaces, Thin Films Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Metals and Alloys Condensed Matter Physics

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