| 1) |
sp3
content, one
of the critical numbers for identifying which type of DLC or ta-C is
present. |
|
|
|
The sp3
content, mass density, and Young's Modulus (YME) are correlated. The
YME is most readily and accurately obtained from measurements of the
velocities for propagation of elastic waves of different frequencies
excited by the impulses delivered by a pulsed laser beam focused upon
the surface of the material. |
|
Both
commercial services and devices are available for such
measurements. |
| LAwave
material supplied courtesy of Fraunhofer USA |
 |
|
| As should
be the case, YME and density are found to be correlated... |
Provided
the coating measured is thick enough. |
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|
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