Weimin Long

The interaction between corrosion and cavitation erosion of iron-based amorphous/nanocrystal coatings sprayed by HVOF

Lei Qiao, Botao Zhou, Y.X. Gan, Ruifeng Li et autres

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Study on the properties and mechanism of magnesium alloy and Ni-plating stainless-steel by ultrasonic-laser welding-brazing

Bing Wang, Zhan Cheng, Haijun Xu, Yu Wang et autres

This study aims to provide a new process to improve the welding performance of steel/magnesium dissimilar materials, using an ultrasonic-laser welding-brazing method to joints AZ31B magnesium alloy on 304 stainless steel. The relationship between laser power, Ni-plating and element distribution, microstructure, and …

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The Friction Reduction and Stick–Slip Inhibition Effects of Ultrasonic Vibration on Sliding Friction Pair Under Solid Lubrication

Lingjie Luo, Qun Li, Bing Wang, Weimin Long et autres

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Is High-Entropy Engineering an Advantage for Iodine Capture? A Comparative Study on Mono-, Bi-, and Polymetallic ZIF-8 Derivatives

Ying Zhou, Zhikai Zhu, Ge Zhang, Wei He et autres

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The inhibition mechanism of ultrasonic vibration on stick-slip phenomenon of sliding friction pair

Lingjie Luo, Ningbo Li, Qun Li, Bing Wang et autres

Frictional vibration often occurs during sliding, commonly referred to as the stick-slip phenomenon. It is more likely to occur in the range of the Stribeck curve, where friction and velocity have negative gradient characteristics. In this study, ultrasonic vibration is applied to …

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Effect of an Ultrasonic Vibration on the Microstructure and Properties of Al Alloy/Steel Laser Welding-Brazing Joints

Chao Zhang, Daozhong Du, Ziqian Wu, Yubo Sun et autres

This study analyzes the influence of different ultrasonic amplitudes on the microstructure composition, microhardness, tensile strength, and corrosion resistance of Al alloy/steel laser welding-brazing joints assisted by ultrasonic vibration. The application of ultrasonic vibration did not change the microstructure composition of the …

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Brazing of TC4 Alloy Using Ti-Zr-Ni-Cu-Sn Amorphous Braze Fillers

Zhan Sun, Boyu Zhang, Degang Li, Xinxin Zhu et autres

In order to address the issues of excessive brittle intermetallic compounds (IMC) formation in the TC4 brazed joints, two types of novel Ti-Zr-Cu-Ni-Sn amorphous braze fillers were designed. The microstructure and shear strength of the TC4/Ti-Zr-Ni-Cu-Sn/TC4 brazed joints were studied by scanning …

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Low-temperature lead-free SnBiIn solder for electronic packaging

Shannan Zhang, Weimin Long, Peiyan Li, Fuli Liu et autres

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Research Status of Evolution of Microstructure and Properties of Sn-Based Lead-Free Composite Solder Alloys

Shuai Li, Xingxing Wang, Zhongying Liu, Feng Mao et autres

With the miniaturization of solder joints and deterioration of serving environment, much effort had been taken to improve the properties of Sn-based lead-free solders. And the fabrication of Sn-based lead-free composite solder alloys by the addition of nanoparticles is one of the …

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Study on the reliability of novel Au–30Ga solder for high-temperature packaging

Han Liu, Songbai Xue, Weimin Long, Sujuan Zhong et autres

As a novel high-temperature solder with suitable eutectic temperature and excellent solderability, Au–30Ga eutectic alloy shows high application potential as a packaging material for high-power devices. In this work, the evolution of microstructure, shear strength and fracture mechanism of Au–30Ga/Ni solder joint …

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Effect of Cr Addition on Microstructure and Properties of AuGa Solder

Songbai Xue, Han Liu, Weimin Long, Bo Wang

In order to meet the service requirements of electronic devices working at 300 °C in the fields of energy resource prospecting and space exploration, Cr element was added to modify AuGa solder to improve its high-temperature performance. The results showed that the …

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Wetting behavior and vacuum soldering of novel Au-30Ga solder on Ni and Cu substrate

Han Liu, Songbai Xue, Weimin Long, Sujuan Zhong et autres

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