Anisotropic tribological properties of the coating on a magnetic recording disk

Do Hyung Kim; Jang Kyo Kim; Pyung Hwang

doi:10.1016/S0040-6090(99)00884-6

Anisotropic tribological properties of the coating on a magnetic recording disk

Do Hyung Kim, Jang Kyo Kim, Pyung Hwang

Mechanical & Nuclear Engineering

Yeungnam University

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

13 Scopus citations

Abstract

Mechanical and analytical tools were used to characterize the coatings on a magnetic recording disk. The mechanical and tribological properties of the coating were evaluated using the nano-indentation and nano-scratch tests. The transmission electron microscopy (TEM) and the Auger electron spectroscopy (AES) were used to determine the thickness and elemental compositions of the coating layers, while the atomic force microscopy (AFM) was used to study the surface topology and roughness. It was shown that the disk surface had a texture preferentially oriented along the circumferential direction with fairly uniform summit height and little waviness. The variations of surface roughness data were analyzed statistically, based on the Gaussian probability and Weibull cumulative probability theories. The coefficient of friction and the surface roughness were found to depend on scan direction relative to the coating texture. The hardness and elastic modulus were strongly influenced by the coating/substrate interaction and the surface roughness of the coating.

Original language	British English
Pages (from-to)	187-194
Number of pages	8
Journal	Thin Solid Films
Volume	360
Issue number	1-2
DOIs	https://doi.org/10.1016/S0040-6090(99)00884-6
State	Published - 1 Feb 2000

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title = "Anisotropic tribological properties of the coating on a magnetic recording disk",

abstract = "Mechanical and analytical tools were used to characterize the coatings on a magnetic recording disk. The mechanical and tribological properties of the coating were evaluated using the nano-indentation and nano-scratch tests. The transmission electron microscopy (TEM) and the Auger electron spectroscopy (AES) were used to determine the thickness and elemental compositions of the coating layers, while the atomic force microscopy (AFM) was used to study the surface topology and roughness. It was shown that the disk surface had a texture preferentially oriented along the circumferential direction with fairly uniform summit height and little waviness. The variations of surface roughness data were analyzed statistically, based on the Gaussian probability and Weibull cumulative probability theories. The coefficient of friction and the surface roughness were found to depend on scan direction relative to the coating texture. The hardness and elastic modulus were strongly influenced by the coating/substrate interaction and the surface roughness of the coating.",

author = "Kim, {Do Hyung} and Kim, {Jang Kyo} and Pyung Hwang",

note = "Funding Information: The author J.-K. Kim wishes to thank the Research Grant Council (RGC) of Hong Kong for continuing support of this work. D.-H. Kim was a visiting scholar from Yeungnam University, South Korea to Hong Kong University of Science & Technology (HKUST) when the experiments were performed. Most of the experiments were conducted at Advanced Engineering Materials Facilities (AEMF) and Materials Characterization & Preparation Facilities (MCPF) of HKUST. Samsung Electronics Co., South Korea supplied the magnetic recording disks.",

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doi = "10.1016/S0040-6090(99)00884-6",

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AU - Kim, Do Hyung

AU - Kim, Jang Kyo

AU - Hwang, Pyung

N1 - Funding Information: The author J.-K. Kim wishes to thank the Research Grant Council (RGC) of Hong Kong for continuing support of this work. D.-H. Kim was a visiting scholar from Yeungnam University, South Korea to Hong Kong University of Science & Technology (HKUST) when the experiments were performed. Most of the experiments were conducted at Advanced Engineering Materials Facilities (AEMF) and Materials Characterization & Preparation Facilities (MCPF) of HKUST. Samsung Electronics Co., South Korea supplied the magnetic recording disks.

PY - 2000/2/1

Y1 - 2000/2/1

N2 - Mechanical and analytical tools were used to characterize the coatings on a magnetic recording disk. The mechanical and tribological properties of the coating were evaluated using the nano-indentation and nano-scratch tests. The transmission electron microscopy (TEM) and the Auger electron spectroscopy (AES) were used to determine the thickness and elemental compositions of the coating layers, while the atomic force microscopy (AFM) was used to study the surface topology and roughness. It was shown that the disk surface had a texture preferentially oriented along the circumferential direction with fairly uniform summit height and little waviness. The variations of surface roughness data were analyzed statistically, based on the Gaussian probability and Weibull cumulative probability theories. The coefficient of friction and the surface roughness were found to depend on scan direction relative to the coating texture. The hardness and elastic modulus were strongly influenced by the coating/substrate interaction and the surface roughness of the coating.

AB - Mechanical and analytical tools were used to characterize the coatings on a magnetic recording disk. The mechanical and tribological properties of the coating were evaluated using the nano-indentation and nano-scratch tests. The transmission electron microscopy (TEM) and the Auger electron spectroscopy (AES) were used to determine the thickness and elemental compositions of the coating layers, while the atomic force microscopy (AFM) was used to study the surface topology and roughness. It was shown that the disk surface had a texture preferentially oriented along the circumferential direction with fairly uniform summit height and little waviness. The variations of surface roughness data were analyzed statistically, based on the Gaussian probability and Weibull cumulative probability theories. The coefficient of friction and the surface roughness were found to depend on scan direction relative to the coating texture. The hardness and elastic modulus were strongly influenced by the coating/substrate interaction and the surface roughness of the coating.

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SN - 0040-6090

VL - 360

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EP - 194

JO - Thin Solid Films

JF - Thin Solid Films

IS - 1-2

ER -

Anisotropic tribological properties of the coating on a magnetic recording disk

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