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Single-point diamond turning of electroless nickel for flat X-ray mirror

Kwon Su Chon
The Journal of Mechanical Science and Technology, vol. 24, no. 8, pp.1603-1609, 2010

Abstract : X-ray mirrors require a super-smooth surface to prevent strong X-ray scattering. We examined the fabrication possibility of the X-ray mirror by single-point diamond turning (SPDT) for electroless nickel. The stable and unstable cutting modes for the electroless nickel were obtained by observing the relative position of a diamond tool for machining. A super-smooth surface of 0.95 nm rms was achieved within the stable cutting mode. The surface roughness of the electroless nickel mirror measured with an optical profiler was compared with the X-ray reflectivity measurement. The electroless nickel mirror could be successfully used as a soft X-ray reflector and a low-pass filter for the hard X-rays.

Keyword : Electroless nickel; Single-point diamond turning; Surface roughness; Ultraprecision machining; X-ray mirror

 
 
 
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