Optics with diamond-like-carbon overcoat (DOC) provide improved optical performance over traditional DLC films and better cleanability than standard PVD coatings

2019 ◽  
Author(s):  
Stan Himelinski ◽  
Jim Bacon ◽  
Alan R. Hedges ◽  
Gregg Davis
Keyword(s):  
Diamond Like Carbon ◽  
Optical Performance ◽  
Pvd Coatings ◽  
Carbon Overcoat

Deformation of an Ultra-Thin Diamond-Like Carbon Coating on a Magnetic Recording Head Under Combined Loading

2014 ◽  
Author(s):  
Michael Price ◽  
Andrey Ovcharenko ◽  
Raj Thangaraj ◽  
Bart Raeymaekers
Keyword(s):  
Magnetic Recording ◽  
Carbon Coating ◽  
Silicon Layer ◽  
Combined Loading ◽  
Design Parameters ◽  
Diamond Like Carbon ◽  
Carbon Overcoat ◽  
Recording Head ◽  
Tetrahedral Amorphous Carbon ◽  
Magnetic Recording Head

Combined normal and tangential loading of a magnetic recording head on a rigid hydrogenated diamond counterface is simulated using molecular dynamics. Deformation of the substrate, silicon interlayer and tetrahedral amorphous carbon overcoat that comprise the head is quantified as a function of operating and design parameters. We find that decreasing the silicon layer thickness decreases residual strain in the recording head. Deformation occurs primarily at the Ni-Si interface and within the Si layer.

Hard Amorphous Carbon Pvd Coatings

1992 ◽  
Vol 270 ◽  
Author(s):  
O. KNOTEK ◽  
F. LÖffler ◽  
J. Brand
Keyword(s):  
Amorphous Carbon ◽  
High Speed ◽  
Cemented Carbides ◽  
Diamond Like Carbon ◽  
Pvd Coatings ◽  
Arc Ion Plating ◽  
Ion Plating ◽  
Tribological Application ◽  
Influencing Parameters

ABSTRACTAmorphous diamond-like carbon (ADLC) coatings are deposited on cemented carbides, high speed steels (HSS) and other steels, using arc-ion plating. The paper describes both the problems and the potential of this process with its many influencing parameters. It also details a number of properties of hydrogen-free a-C films deposited at coating temperatures of 200°C; as an example, a tribological application is described.

Electron energy loss spectroscopy of diamond-like carbon thin films

1992 ◽  
Vol 50 (2) ◽  
pp. 1272-1273
Author(s):  
J. Kulik ◽  
Y. Lifshitz ◽  
G.D. Lempert ◽  
S. Rotter ◽  
J.W. Rabalais ◽  
...  
Keyword(s):  
Thin Films ◽  
Energy Loss ◽  
Electron Energy ◽  
Ion Beam ◽  
Diamond Like Carbon ◽  
Ion Beam Deposition ◽  
Chemistry Research ◽  
Carbon Thin Films ◽  
Electron Energy Loss ◽  
Beam Deposition

Carbon thin films with diamond-like properties have generated significant interest in condensed matter science in recent years. Their extreme hardness combined with insulating electronic characteristics and high thermal conductivity make them attractive for a variety of uses including abrasion resistant coatings and applications in electronic devices. Understanding the growth and structure of such films is therefore of technological interest as well as a goal of basic physics and chemistry research. Recent investigations have demonstrated the usefulness of energetic ion beam deposition in the preparation of such films. We have begun an electron microscopy investigation into the microstructure and electron energy loss spectra of diamond like carbon thin films prepared by energetic ion beam deposition.The carbon films were deposited using the MEIRA ion beam facility at the Soreq Nuclear Research Center in Yavne, Israel. Mass selected C+ beams in the range 50 to 300 eV were directed onto Si {100} which had been etched with HF prior to deposition.

Chemical structure of diamond-like carbon thin films

1990 ◽  
Vol 48 (4) ◽  
pp. 710-711
Author(s):  
N.-H. Cho ◽  
K.M. Krishnan ◽  
D.B. Bogy
Keyword(s):  
Electrical Resistivity ◽  
Chemical Structure ◽  
Diamond Like Carbon ◽  
Chemical Structures ◽  
Sputtering Power ◽  
Data Aquisition ◽  
Equilibrium Phases ◽  
Electron Energy Loss ◽  
Power Densities ◽  
Preparation Techniques

Diamond-like carbon (DLC) films have attracted much attention due to their useful properties and applications. These properties are quite variable depending on film preparation techniques and conditions, DLC is a metastable state formed from highly non-equilibrium phases during the condensation of ionized particles. The nature of the films is therefore strongly dependent on their particular chemical structures. In this study, electron energy loss spectroscopy (EELS) was used to investigate how the chemical bonding configurations of DLC films vary as a function of sputtering power densities. The electrical resistivity of the films was determined, and related to their chemical structure.DLC films with a thickness of about 300Å were prepared at 0.1, 1.1, 2.1, and 10.0 watts/cm2, respectively, on NaCl substrates by d.c. magnetron sputtering. EEL spectra were obtained from diamond, graphite, and the films using a JEOL 200 CX electron microscope operating at 200 kV. A Gatan parallel EEL spectrometer and a Kevex data aquisition system were used to analyze the energy distribution of transmitted electrons. The electrical resistivity of the films was measured by the four point probe method.

Field Emission from Pure and Nitrogen-Incorporated Diamond-Like-Carbon Films

1996 ◽  
Vol 06 (C5) ◽  
pp. C5-91-C5-95 ◽  
Author(s):  
S. Lee ◽  
B. Chung ◽  
T.-Y. Ko ◽  
H. Cho ◽  
D. Jeon ◽  
...  
Keyword(s):  
Field Emission ◽  
Carbon Films ◽  
Diamond Like Carbon

Application of Capillary Discharge Technique for Deposition of Diamond-Like Carbon Thin Films (2nd Report)

2013 ◽  
Vol 133 (5) ◽  
pp. 293-299
Author(s):  
Kiyotoshi Fujii ◽  
Etsuo Fujiwara ◽  
Masayoshi Shimizu ◽  
Shozo Inoue
Keyword(s):  
Thin Films ◽  
Capillary Discharge ◽  
Diamond Like Carbon ◽  
Carbon Thin Films
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