Addition of Nano CaF2@SiO2 and SiC Whiskers in Ceramic Tools for Wear Reduction and Improved Machinability

Wenhao Zhang; Zhaoqiang Chen; Congfeng Tian; Jun Wu; Guangchun Xiao; Niansheng Guo; Mingdong Yi; Jingjie Zhang; Chonghai Xu

doi:10.3390/ma15155430

Addition of Nano CaF₂@SiO₂ and SiC Whiskers in Ceramic Tools for Wear Reduction and Improved Machinability

Materials (Basel). 2022 Aug 7;15(15):5430. doi: 10.3390/ma15155430.

Authors

Wenhao Zhang¹, Zhaoqiang Chen^{1

2

3}, Congfeng Tian⁴, Jun Wu^{1

2}, Guangchun Xiao^{1

2

3}, Niansheng Guo¹, Mingdong Yi^{1

2}, Jingjie Zhang^{1

2}, Chonghai Xu^{1

2

3}

Affiliations

¹ School of Mechanical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
² Shandong Machinery Design and Research Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250031, China.
³ Key Laboratory of Advanced Manufacturing and Measurement and Control Technology for Light Industry in Universities of Shandong, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
⁴ Shantui Construction Machinery Co., Ltd., Jining 272035, China.

Abstract

The addition of CaF₂@SiO₂ and SiC whiskers to ceramic tools can improve their flexural strength and fracture toughness, reduce surface damage, and improve their cutting performance. The cutting experiments showed that under the same cutting conditions, the surface roughness of the workpiece processed with the Al₂O₃/TiC/SiC/CaF₂@SiO₂ (ATSC10) tool was significantly lower than that of the workpiece processed with the Al₂O₃/TiC/ SiC (ATS) tool. Additionally, the main cutting force and cutting temperature when cutting with the ATSC10 tool were lower by 30 and 31.7%, respectively. These results were attributed to the precipitation of CaF₂ from the nanocoated particles during cutting and the formation of a uniform and continuous lubricating film on the surface of the tool. The wear on the front surface of the ATS tool was mainly adhesive, and that on the back tool surface was mainly abrasive. For ATSC10, the main forms of wear on the tool front surface were adhesive and abrasive, whereas the main form of wear on the tool back surface was abrasive with slight adhesive wear. The addition of nano-coated particles and whiskers improved the mechanical properties of the cutting tool while maintaining good cutting performance.

Keywords: ceramic; cutting performance; nanoparticles; wear reduction; whisker.

Grants and funding

This work is financially supported by the Shandong Province Key Research and Development Plan (grant number 2020CXGC011004); the Natural Science Foundation of Shandong Province (grant number ZR2020ME155); the National Natural Science Foundation of China (grant number 52075276); the Shandong Province Key Research and Development Plan (grant number 2019GGX104084); and the Project for the Innovation Team of Universities and Institutes in Jinan (grant number 2018GXRC005).