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含类金刚石薄膜的镁铝合金振膜的制备及其声学特性研究
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中国地质大学 珠宝学院

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中图分类号:

TB43

基金项目:

中国博士后科学基金第72批面上资助(2022M722936),中央高校青年优秀人才培育项目(20211234#),湖北省教育厅科学研究计划指导性项目(B2022261),硅酸盐建筑材料国家重点实验室开放基金(SYSJJ2022-14),湖北省博士后创新研究岗位,湖北省人文社会科学重点研究基地-珠宝首饰传承与创新发展研究中心暨湖北省珠宝工程技术研究中心开放基金(CIGTXM-03-202202)


Preparation and Acoustic Characteristics of Magnalium Diaphragmwith DLC Coating
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Affiliation:

Gemmological Institute, China University of Geosciences

Fund Project:

China University of Geosciences (Wuhan) (No. CUG2021234), Open Fund from State Key Laboratory of Silicate Materials for Architectures (Wuhan University of Technology) (No. SYSJJ2022-14), Postdoctoral Creative Research Post of Hubei Province, Hubei Key Research Base of Humanities and Social Sciences—Center for Jewelry Heritage and Innovation & Hubei Gems and Jewelry Engineering Technology Research Center (No. CIGTXM-03-202202).

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    摘要:

    本研究通过脉冲等离子体增强化学气相沉积技术,在镁铝合金振膜上沉积类金刚石(Diamond-like carbon, DLC)薄膜。利用SEM、RAMAN和AFM表征了不同沉积工艺的DLC薄膜的形态和组成结构,测试了含DLC膜层的镁铝合金复合振膜的力学性能,相比镁铝合金振膜基底,DLC薄膜使得复合振膜在表面粗糙度、硬度和弹性模量方面有较多改善。通过研究含DLC薄膜的镁铝合金复合振膜的频率响应曲线和谐波失真等声学性能,复合振膜提升了频响上限,赋予了扬声器高保真性。采用含DLC膜层的镁铝合金复合振膜制成的音响设备,具有良好的音色自然度、声场表现度、人声表现度和整体评价度,能够有效提高人类主观听音效果。

    Abstract:

    In this study, the diamond-like carbon (DLC) coating was deposited on magnalium diaphragm by pulsed plasma enhanced chemical vapor deposition technology. The morphology and composition of the DLC coating deposited by different processes were characterized by SEM, RAMAN and AFM, and the mechanical properties of magnalium diaphragm with DLC coating were studied. Compared with magnalium diaphragm, the DLC coating improved the surface roughness, hardness and elasticity modulus. The frequency response curve and harmonic distortion showed that the DLC coating increased the upper limit of frequency response and imparts high fidelity to the loudspeaker. Audio equipment fabricated with magnalium diaphragm with DLC coating had good timbre naturalness, sound field expression, vocal performance and overall evaluation, which can effectively improve the human subjective listening effect.

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方非凡,孙庆磊,王文清,郝亮.含类金刚石薄膜的镁铝合金振膜的制备及其声学特性研究[J].稀有金属材料与工程,2023,52(10):3470~3478.[fangfeifan, sunqinglei, wangwenqing, haoliang. Preparation and Acoustic Characteristics of Magnalium Diaphragmwith DLC Coating[J]. Rare Metal Materials and Engineering,2023,52(10):3470~3478.]
10.12442/j. issn.1002-185X.20220757

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历史
  • 收稿日期:2022-09-23
  • 最后修改日期:2023-08-17
  • 录用日期:2023-01-05
  • 在线发布日期: 2023-10-27
  • 出版日期: 2023-10-24