Frontiers of Mechanical Engineering

, Volume 12, Issue 1, pp 77–88 | Cite as

Research progress on ultra-precision machining technologies for soft-brittle crystal materials

  • Hang Gao
  • Xu Wang
  • Dongming Guo
  • Yuchuan Chen
Open Access
Review Article


Soft-brittle crystal materials are widely used in many fields, especially optics and microelectronics. However, these materials are difficult to machine through traditional machining methods because of their brittle, soft, and anisotropic nature. In this article, the characteristics and machining difficulties of soft-brittle and crystals are presented. Moreover, the latest research progress of novel machining technologies and their applications for softbrittle crystals are introduced by using some representative materials (e.g., potassium dihydrogen phosphate (KDP), cadmium zinc telluride (CZT)) as examples. This article reviews the research progress of soft-brittle crystals processing.


brittle soft functional crystal ultra-precision machining 



This work was funded by the National Natural Science Foundation of China (Grant No. 51135002) and Science Fund for Creative Research Groups (Grant No. 51321004). The authors are grateful to Professor Bi Zhang for proofreading the manuscript.


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Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  1. 1.Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of EducationDalian University of TechnologyDalianChina

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