Preparing and Wear-Resisting Property of Al2O3/Cu Composite Material Enhanced Using Novel In Situ Generated Al2O3 Nanoparticles

Youming Chen; Rafi Ud-Din; Teng Yang; Tao Li; Chuanghao Li; Aimin Chu; Yuping Zhao

doi:10.3390/ma16134819

Preparing and Wear-Resisting Property of Al₂O₃/Cu Composite Material Enhanced Using Novel In Situ Generated Al₂O₃ Nanoparticles

Materials (Basel). 2023 Jul 4;16(13):4819. doi: 10.3390/ma16134819.

Authors

Youming Chen¹, Rafi Ud-Din², Teng Yang¹, Tao Li¹, Chuanghao Li¹, Aimin Chu¹, Yuping Zhao³

Affiliations

¹ Hunan Provincial Key Defense Laboratory of High Temperature Wear-Resisting Materials and Preparation Technology, School of Materials Science and Engineering, Hunan University of Science and Technology, Xiangtan 411201, China.
² Materials Division, PINSTECH, Post Office Nilore, Islamabad 44000, Pakistan.
³ School of Civil and Engineering, Hunan University of Science and Technology, Xiangtan 411201, China.

Abstract

Al₂O₃/Cu composite material (ACCM) are highly suitable for various advanced applications owing to its excellent properties. In the present work, a combination of the solution combustion synthesis and hydrogen reduction method was first employed to prepare Al₂O₃/Cu composite powder (ACCP), and subsequently ACCM was prepared by employing spark plasma sintering (SPS) technique. The effect of Al₂O₃ contents and SPS temperatures on the properties (relative density, hardness, friction coefficient, and electrical conductivity, et al.) of ACCM were investigated in detail. The results indicated that ACCM was very dense, and microstructure was consisted of fine Al₂O₃ particles evenly distributed in the Cu matrix. With the increase of SPS temperature, the relative density and hardness of ACCM had first increased and then decreased. At 775 °C, the relative density and hardness had attained the maximum values of 98.19% and 121.4 HV, respectively. With the increase of Al₂O₃ content, although the relative density of ACCM had gradually decreased, nevertheless, its friction coefficient had increased. Moreover, with the increase of Al₂O₃ contents, the hardness of ACCM first increased and then decreased, and reached the maximum value (121.4 HV) with 3 wt.% addition. On the contrary, the wear rate of ACCM had first decreased and then increased with the increase of Al₂O₃ contents, and attained the minimum (2.32 × 10^-5 mm³/(N.m)) with 3 wt.% addition.

Keywords: X-ray diffraction; composite material; mechanical properties; metals; microstructure.

Grants and funding

This research received no external funding.