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Magnesium alloy surface MoS2 / resin hybrid layer Preparation and Properties

Author: DanXiaoPeng
Tutor: WangQuDong；GuoXingWu
School: Shanghai Jiaotong University
Course: Materials Processing Engineering
Keywords: MoS2 / Resin Hybrid Coating Codeposition Electrochemical properties Friction and wear
CLC: TG174.4
Type: Master's thesis
Year: 2012
Downloads: 31
Quote: 0
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Abstract


Ultra- high-strength magnesium alloy has the characteristics of , and has good toughness, easy deformation processing , etc., are aerospace, automotive , steel, electronics and other fields is widely used in a class of structural materials. However, the magnesium alloy corrosion resistance and wear resistance is poor, so that its application is greatly limited. This deionized water as a dispersion medium , select a resin commonly used in industry ( anionic acrylic resin and a cationic epoxy resin ) as the organism , selected solid lubricant MoS 2 as filler particles to Triton X-100 as the primary dispersant prepared containing resin and MoS 2 particle dispersion ; and anodic oxidation as pre-treatment by electrochemical codeposition method GW103K magnesium alloy surface prepared MoS 2 / resin hybrid layer . And through the PTFE emulsion blending modification to improve the hybrid layer corrosion and wear resistance , and discuss PTFE content on hybrid layer properties. Using MR-060 multifunction friction and wear tester characterize the friction and wear properties of the coating and wear mechanism of the coating ; electrochemical workstation using PARSTAT2273 electrochemical impedance spectroscopy (EIS) and polarization curves (PD) test ; utilize FE-SEM and EDS analysis of the film structure and morphology . The results showed that: in 3.5wt% NaCl solution and 1N loading the rubbing process , the hybrid layer exhibit more excellent corrosion resistance and wear resistance ; PTFE is added , can significantly reduce the friction coefficient of the hybrid layer , improve the resistance wear resistance , corrosion resistance and contribute .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metallurgy and Heat Treatment > Metal corrosion protection,metal surface treatment > Corrosion control and protection > Metal surface protection technology
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