Laser & Optoelectronics Progress, Volume. 62, Issue 19, 1906027(2025)
Dual-Laser Processed Tungsten Carbide Ceramic Particles for Reinforcing Tin-Nickel Bronze Alloy Composites (Invited)
To enhance the hardness and wear resistance of tin-nickel bronze (CuSn12Ni2) for high-load and high-friction applications, this study proposes a CuSn12Ni2 alloy reinforced with tungsten carbide (WC) ceramic particles by a circular oscillating dual-laser technique. Taking the merits of the high absorption rate of blue laser and high power of infrared laser, the melt of WC/CuSn12Ni2 composite powder can be sufficiently promoted by a dual-laser with a grain-refining effect. WC particles underwent slight melting during the cladding process, some decomposed into tungsten (W) and carbon (C) elements. During the solidification process, a series of phases are formed, including CuZn, W2C, WC, and MC carbide. The increase mass fraction of WC particles lead to an increase in carbide content while simultaneously reducing grain size. The combined effects of grain refinement and solution strengthening result in the enhanced hardness of the deposited composites. Compared to the CuSn12Ni2 alloy, the hardness of the CuSn12Ni2 deposition layer with WC mass fraction of 24% reinforcement exhibited a remarkable 66.26% improvement. Based on ring-on-block friction experiments, the wear rate of the WC/CuSn12Ni2 composite deposition layer can be reduced to 0.637×10-4 mg/mm. The WC particles are functioning as a supporting skeleton within the composite and can inhibit the increase of wear parameter, indicating a significant enhancement in wear resistance. These findings offer a reliable insight for the application of CuSn12Ni2 in complex industrial environments.
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Xiaohua Wang, Yumeng Lu, Ziyihui Wang, Tiegen Liu. Dual-Laser Processed Tungsten Carbide Ceramic Particles for Reinforcing Tin-Nickel Bronze Alloy Composites (Invited)[J]. Laser & Optoelectronics Progress, 2025, 62(19): 1906027
Category: Fiber Optics and Optical Communications
Received: Apr. 23, 2025
Accepted: May. 30, 2025
Published Online: Sep. 28, 2025
The Author Email: Ziyihui Wang (zyhwang@tju.edu.cn)
CSTR:32186.14.LOP251076