Study on the correlation between the running-in attractor and the wear particle group

Ding, Cong; Zhou, Zhenyu; Yuan, Zhipeng; Zhu, Hua; Zhong-yu, Piao

doi:10.1108/ilt-07-2019-0267

Cited by 4 publications

(2 citation statements)

References 24 publications

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“…It can be seen from Figure 8a,b that there were parallel furrows and a little adhesion trace on the wear trace of the AZ91D magnesium alloy, with some cracks distributing on the edge of the furrows, and some debris were observed. Hence, the wear mechanism of AZ91D was typical abrasive wear and adhesive wear [24][25][26][27].…”

Section: Wear Performancementioning

confidence: 99%

Microstructure and Properties of Cold Sprayed NiCrAl Coating on AZ91D Magnesium Alloy

Zhao

Dong

et al. 2021

Coatings

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Herein, a NiCrAl coating was prepared on the AZ91D magnesium alloy by cold spraying technology. The microstructure, wear resistance, and corrosion resistance of the cold sprayed NiCrAl coating were studied and compared with two NiCrAl coatings prepared by plasma spraying. The results showed that the porosity of the two-plasma sprayed NiCrAl coatings was 3.21% and 2.66%, respectively, while that of the cold sprayed NiCrAl coating was only 0.68%. The hardness of the cold sprayed NiCrAl coating (650 HV0.1) was higher than those of the two-plasma sprayed NiCrAl coatings (300 HV0.1, 400 HV0.1). In the abrasion resistance test, the cold sprayed NiCrAl coating showed a lower friction coefficient (0.346), less wear volume (3.026 mm3), and superior wear resistance accordingly compared with the two-plasma sprayed NiCrAl coatings. Moreover, the scanning electron microscopy (SEM) morphology at the bottom of the wear trace of the cold sprayed NiCrAl coating showed a compact mechanically mixed layers (MML) structure, and its wear mechanism was mainly abrasive wear, with some fatigue wear. In the electrochemical test, the corrosion current density of the cold sprayed NiCrAl coating (4.404 × 10−2 A·cm−2) was much lower than those of two plasma sprayed coatings (25.96 A·cm−2, 26.98 A·cm−2), indicating that the cold sprayed NiCrAl coating had superior corrosion resistance. Therefore, preparing a cold sprayed NiCrAl coating is a feasible method to comprehensively improve the wear resistance and corrosion resistance of the AZ91D magnesium alloy.

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Section: Wear Performancementioning

confidence: 99%

Microstructure and Properties of Cold Sprayed NiCrAl Coating on AZ91D Magnesium Alloy

Zhao

Dong

et al. 2021

Coatings

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“…Meanwhile, it was transmitted to a signal acquisition and analysis system. The stage testing method [18,23] was employed to study the evolution rule of surface morphology of AISI 5120 disc in the wear process. As displayed in Fig.…”

Section: Experimental Methodologymentioning

confidence: 99%

Correlation between Spatial Fractal and Temporal Chaos During the Sliding Wear Process of AISI 5120 Steel

Ding

Zhou

Zhong-yu

2021

Preprint

Self Cite

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The purpose of this paper is to establish the relationship between surface morphology and friction coefficient in the wear process. Different wear stage tests of AISI 52100 ring sliding against AISI 5120 disc were designed and conducted on a rotating setup. The fractal and chaos theories were employed to study the nonlinear features of surface structure and friction signal from spatial and temporal scales. The results showed that 3D surface morphology has fractal nature. The fractal dimension Ds first increased and then stabilized at a maximum and finally decreases dramatically. The multifractal spectrum width Δα presented an contrary evolution trend. The friction coefficient signal has chaotic nature. The standard deviation of distance matrix STD obeyed the evolution rule of a bathtub curve. The correlation value between Ds and STD was − 0.7727, and the correlation value between Δα and STD was 0.7130. The strong correlation between spatial and temporal scales is beneficial to on-line recognition and prediction of wear states in real time.

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Analysis of Multi-Stage Running-In Process of Sn-11Sb-6Cu Alloy and AISI 1045 With Phase Trajectory Plot

Zhou

Zhao

Zuo

2021

Journal of Tribology

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Running-in of the main bearings of diesel engine is a crucial process before service. Multi-stage running-in is a better way to enhance running-in quality and efficiency. In order to reveal the evolution of phase trajectory and compare the running-in quality, the running-in tests were performed with the material of bearing bush (Sn-11Sb-6Cu) and shaft (AISI 1045). The running-in quality was comprehensively evaluated via friction coefficient, phase trajectory and surface topography. Results indicate that the phase trajectories show a trend of stage-by-stage convergence. The multi-stage running-in can achieve a more stable attractor, lower friction coefficient and smoother surface, that is, a better running-in quality than the constant running-in scheme. This study provides a reference for formulating running-in specifications for sliding bearings.

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Study on the correlation between the running-in attractor and the wear particle group

Cited by 4 publications

References 24 publications

Microstructure and Properties of Cold Sprayed NiCrAl Coating on AZ91D Magnesium Alloy

Microstructure and Properties of Cold Sprayed NiCrAl Coating on AZ91D Magnesium Alloy

Correlation between Spatial Fractal and Temporal Chaos During the Sliding Wear Process of AISI 5120 Steel

Analysis of Multi-Stage Running-In Process of Sn-11Sb-6Cu Alloy and AISI 1045 With Phase Trajectory Plot

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