The impact of lubricants on the precision lapping process.
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.
1School of Chemistry and Chemical Engineering,Sun Yat-sen University,Guangzhou 510275,P.R. China.
Xionghua
X
Jiang
1School of Chemistry and Chemical Engineering,Sun Yat-sen University,Guangzhou 510275,P.R. China.
Zhenxing
Z
Chen
2National Center for Nanoscience & Technology,University of Chinese Academy of Sciences,Beijing 100190,China.
Joy
J
Wolfram
3ST-Lapping department of SAE Co.,Dongguan 523000,China.
Zhongxian
Z
Wei
1School of Chemistry and Chemical Engineering,Sun Yat-sen University,Guangzhou 510275,P.R. China.
Yuqiu
Y
Shen
4Department of Emergency,Jinling Hospital Medical School of Nanjing University,Nanjing 210000,China.
Zhizhou
Z
Yang