Publications by authors named "Qingmin Huang"
Materials (Basel)
October 2022
Article Synopsis
- Mud pulser carbide rotors used in crude oil exploration are prone to mud erosion and acid corrosion, negatively impacting their performance accuracy.
- The study investigates the corrosion and erosion behavior of tungsten-cobalt carbide materials through experiments simulating the petrochemical environment using techniques like SEM, EDS, and XRD.
- Results indicate that corrosion is fastest during initial exposure, with specific erosion rates linked to corrosion time; the study highlights the balance between material composition and corrosion effects on erosion resistance.
Materials (Basel)
July 2022
Article Synopsis
- An AlCrSiWN coating was applied to a cemented carbide substrate using arc ion plating, optimizing the process through orthogonal experiments to assess how parameters affect hardness, bonding, and roughness.
- The study found that bias voltage was the most critical factor influencing coating properties, followed by arc current and N2 flow rate, with the best parameters identified as 160 A arc current, -80 V bias voltage, and 600 sccm N2 flow.
- Increasing the bias voltage to -80 V improved the coating's structure, leading to higher hardness, finer roughness, and enhanced wear resistance, evidenced by lower friction coefficients and reduced wear during testing.
