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Conferences > DFM > 1995 > DEDS > DEDS137
  • Applications of Diamond Films and Related Materials: Third International Conference
  • Technical Digest Series (Optica Publishing Group, 1995),
  • paper DEDS137

Titanium Acoustic Diaphragm Coated with Polycrystal Diamond Film

Zhiwei Zhang, Zhen Yan, Hesun Zhu, Qinghua Zhao, and Chuanbao Cao

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Abstract

The spherical titanium diaphragm, which is widely used in high frequency loudspeaker, coat with polycrystal diamond film (DF) was prepared for the first time in China by the method of DC arc plasma jet. Its acoustic performance was remarkably upgraded, as confirmed by Raman Shift Spectrum and frequency response curve. Its sensibility was improved by 3-6 dB and frequency widened by 5×l03Hz. The frequency range extended from 2.2× l03Hz to 25×103Hz. The preparation and process of DF is discussed.

© 1995 Optical Society of America

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