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The Impact of Lubricants on the Precision Lapping Process

Published online by Cambridge University Press:  12 November 2014

Xionghua Jiang ,
Zhenxing Chen ,
Joy Wolfram ,
Zhongxian Wei ,
Yuqiu Shen  and
Zhizhou Yang
Xionghua Jiang
Affiliation:
School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, P.R. China
Zhenxing Chen*
Affiliation:
School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, P.R. China
Joy Wolfram
Affiliation:
National Center for Nanoscience & Technology, University of Chinese Academy of Sciences, Beijing 100190, China
Zhongxian Wei
Affiliation:
ST-Lapping department of SAE Co., Dongguan 523000, China
Yuqiu Shen
Affiliation:
School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, P.R. China
Zhizhou Yang
Affiliation:
Department of Emergency, Jinling Hospital Medical School of Nanjing University, Nanjing 210000, China
*
*Corresponding author.chenzx65@mail.sysu.edu.cn
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Abstract

The impact of lubricants on pole-tip recession and surface morphology of hard disk drive heads in the precision lapping process was investigated with atomic force microscopy, scanning electron microscopy, and auger electron spectroscopy. In particular, the effects of deionized water, hydrocarbon oil, ethanediol, isopropanol, and ethanol lubricants were evaluated. The results reveal that proper selection of lubricant is critical for achieving optimal performance in the lapping process. A mixture of 68% hydrocarbon oil, 30% isopropanol, and 2% octadecenoic acid was found to yield the most favorable results, displaying a writer shield recession, first shield of reader recession, and surface roughness of 0.423, 0.581, and 0.242 nm, respectively.

Keywords

lubricantpole tip recessionsurface roughnesshard disk drive headprecision lapping
Type
Materials Applications
Information
Microscopy and Microanalysis , Volume 20 , Issue 6 , December 2014 , pp. 1708 - 1714
Copyright
© Microscopy Society of America 2014 

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