Àç·á Material |
Çü¼º¹ý Procedure |
µÎ²² Thickness |
±â´É Functions |
|
À±È°¸· Lubrication film |
PFPE | µµÆ÷ Coating |
10~20¡Ê | µð½ºÅ©¿Í ÀÚ¼ºÇìµåÀÇ ¸¶¸ð ¹æÁö µî Prevention of wear of disk and magnetic head |
º¸È£¸· Protection film |
ź¼Ò Carbon |
½ºÆÛÅ͸µ Sputtering |
100~200¡Ê | ÀÚ¼ºÃþ µîÀÇ º¸È£ Protection of magnetic layer and others |
ÀÚ¼ºÃþ Magnetic layer |
CoÇÕ±Ý Co alloy |
½ºÆÛÅ͸µ Sputtering |
200~800¡Ê | ½ÅÈ£ÀÇ ±â·Ï Recording of signals |
ÇÏÁöÃþ Substrate layer |
Cr/CrÇÕ±Þ Cr / Cr alloy |
½ºÆÛÅ͸µ Sputtering |
500~1,000¡Ê | ÀÚ¼ºÃþÀÇ °áÁ¤¹èÇ⼺ÀÇ Á¦¾î Control of crystal orientation of magnetic layer |
ÇÏÁö°æÈÃþ Hardened substrate |
Ni-P | µµ±Ý Plating |
10~14¥ìm | AIÇձݱâ¹ÝÀÇ Ç¥¸é º¯Çü¹æÁö Prevention of surface deformation of Al alloy substrate |
Al񃒀 Al substrate |
AlÇÕ±Ý/±Û¶ó½º Al alloy / Glass |
0.635~0.800mm | ÀÚ¼ºÃþÀÇ º¸È£ Substrate of hard disk |