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To improve gearset performance, gears can be subjected to surface treatments. One possible surface treatment is TCG, Triboconditioning for Complex Geometries. This paper investigates efficiency and pitting resistance of two types of TCG treatments on powder-sintered gears, compared to an untreated reference. Experimental testing is performed in an FZG gear test rig with an efficiency and a pitting setup, respectively. Efficiency is calculated from the measured outside torque, and pitting evolution is monitored by scanning the tooth surface after each load cycle. The results indicate that TCG increases efficiency. The results concerning pitting resistance are inconclusive with previous studies and to better understand the mechanisms involved, further tests are suggested.
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Tu et al. (2025) studied this question.
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