The effect of carbon overcoat diffusion on CoCrTa/Cr thin-film media

1998 ◽  
Vol 34 (4) ◽  
pp. 1567-1569 ◽  
Author(s):  
J.J.-K. Chang ◽  
K.E. Johnson ◽  
H. Kawayoshi ◽  
Peiching Ling ◽  
M. Strathman
Keyword(s):  
Thin Film ◽  
Carbon Overcoat

Mechanical property measurements of thin-film carbon overcoat on recording media towards 1Tbit∕in2

2006 ◽  
Vol 99 (8) ◽  
pp. 08G906 ◽  
Author(s):  
Ki Myung Lee ◽  
Chang-Dong Yeo ◽  
Andreas A. Polycarpou
Keyword(s):  
Thin Film ◽  
Mechanical Property ◽  
Recording Media ◽  
Carbon Overcoat

scholarly journals Corrosion of Thin Film Magnetic Disk: Galvanic Effects of the Carbon Overcoat

1989 ◽  
Vol 136 (1) ◽  
pp. 42-46 ◽  
Author(s):  
V. Brusic ◽  
M. Russak ◽  
R. Schad ◽  
G. Frankel ◽  
A. Selius ◽  
...  
Keyword(s):  
Thin Film ◽  
Carbon Overcoat ◽  
Magnetic Disk

SEM Studies of Wear Mechanisms in Magnetic Thin Film Disks With Different Overcoats

1992 ◽  
Vol 114 (2) ◽  
pp. 263-269 ◽  
Author(s):  
S. K. Ganapathi ◽  
R. D. Balanson ◽  
F. E. Talke
Keyword(s):  
Thin Film ◽  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Wear Track ◽  
Magnetic Thin Film ◽  
Carbon Overcoat ◽  
Metal Metal ◽  
Sliding Interfaces ◽  
Optical Profilometer ◽  
Scanning Electron

Scanning Electron Microscopy and optical profilometer studies were conducted to study the wear of unlubricated thin-film magnetic recording disks overcoated with carbon as well as silver and zirconia. The results indicate that wear of the carbon overcoat occurs in the form of localized damage, or “pits,” accompanied by a gradual “thinning” of the carbon overcoat in the wear track. A similar pitting behavior is found for zirconia overcoated disks, but the pits resemble cracks in the overcoat, while the wear of silver disks resembles that of typical metal-metal sliding interfaces.

Studies on Wear Mechanism of Ultrathin Protective Carbon Overcoat by Micro-Wear Scan Technique

1994 ◽  
Vol 356 ◽  
Author(s):  
T. W. Wu
Keyword(s):  
Thin Film ◽  
Mechanical Properties ◽  
Wear Mechanism ◽  
Wear Debris ◽  
Normal Load ◽  
Morphology Evolution ◽  
Carbon Overcoat ◽  
Testing Area ◽  
Mechanical Measurements ◽  
Carbon Overcoats

AbstractBy combining the micro-wear and microscratch techniques in a microindenter, a new methodology to investigate the mechanical properties of ultrathin coatings has been developed. With a 0.18 μm/sec scratch speed along a Y-direction while oscillating the indenter tip along the X-direction at a 6.55 Hz frequency, uniform wear tracks of approximately 20 μm × 90 μm in dimension can be created under either a constant or a gradually increased applied normal load. The wear-scan methodology has rendered several immediate advantages over the conventional micro-scratch technique, offering features such as a much larger testing area thus facilitating the failure and morphology analyses afterwards, the possibility of studying the wear debris generation and the flexibility in testing characteristics. Two thin film disks with different hydrogenated carbon overcoats have been tested by using the micro-wear scan technique. The results in the mechanical measurements, the wear processes and the morphology evolution are illustrated and discussed.

ChemInform Abstract: Corrosion of Thin Film Magnetic Disk: Galvanic Effects of the Carbon Overcoat.

ChemInform ◽  
1989 ◽  
Vol 20 (18) ◽  
Author(s):  
V. BRUSIC ◽  
M. RUSSAK ◽  
R. SCHAD ◽  
G. FRANKEL ◽  
A. SELIUS ◽  
...  
Keyword(s):  
Thin Film ◽  
Carbon Overcoat ◽  
Magnetic Disk
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