The Experts below are selected from a list of 300 Experts worldwide ranked by ideXlab platform
Dejiu Shen - One of the best experts on this subject based on the ideXlab platform.
-
Corrosion behaviors and effects of Corrosion products of plasma electrolytic oxidation coated AZ31 magnesium alloy under the salt spray Corrosion Test
Applied Surface Science, 2016Co-Authors: Yan Wang, Guirong Jiang, Qin Yan, Changhong Guo, Chen Liu, Zhiquan Huang, Peng Liu, Yi Zhang, Dejiu ShenAbstract:The effects of Corrosion products on Corrosion behaviors of AZ31 magnesium alloy with a plasma electrolytic oxidation (PEO) coating were investigated under the salt spray Corrosion Test (SSCT). The surface morphology, cross-sectional microstructure, chemical and phase compositions of the PEO coating were determined using scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction analysis (XRD), respectively. Further, the Corrosion process of the samples under the SSCT was examined in a non-aqueous electrolyte (methanol) using electrochemical impedance spectroscopy (EIS) coupled with equivalent circuit. The results show that the inner layer of the coating was destroyed firstly and the Corrosion products have significant effects on the Corrosion behaviors of the coating. The results above are discussed and an electrochemical Corrosion model is proposed in the paper.
Songjie Li - One of the best experts on this subject based on the ideXlab platform.
-
evaluation of susceptibility of high strength steels to delayed fracture by using cyclic Corrosion Test and slow strain rate Test
Corrosion Science, 2010Co-Authors: Songjie Li, Zuogui Zhang, Eiji Akiyama, Kaneaki Tsuzaki, Boping ZhangAbstract:To evaluate susceptibilities of high strength steels to delayed fracture, slow strain rate Tests (SSRT) of notched bar specimens of AISI 4135 with tensile strengths of 1300 and 1500 MPa and boron-bearing steel with 1300 MPa have been performed after cyclic Corrosion Test (CCT). During SSRT the humidity around the specimen was kept high to keep absorbed diffusible hydrogen. The fracture stresses of AISI 4135 steels decreased with increment of diffusible hydrogen content which increased with CCT cycles. Their delayed fracture susceptibilities could be successfully evaluated in consideration of both influence of hydrogen content on mechanical property and hydrogen entry.
Daisuke Mizuno - One of the best experts on this subject based on the ideXlab platform.
-
Corrosion and Corrosion Test methods of zinc coated steel sheets on automobiles
Corrosion Science, 2007Co-Authors: Sakae Fujita, Daisuke MizunoAbstract:The effect of zinc and zinc alloy coated steel sheets on perforation Corrosion in actual automobiles and the relevant accelerated Corrosion Test methods were studied. The main factor affecting Corrosion in the crevice of lapped panels was the coating weights of zinc and zinc alloys rather than the type of coating. Perforation Corrosion process of galvanized steel in the crevice of lapped portion in automobiles was divided in four stages. Based on the analysis of Corrosion in actual automobiles, a Perforation Corrosion Index, PCI for lapped steel panels was proposed. Assuming PCI for various accelerated Corrosion Test methods, the Corrosion resistance of various types of coated steel sheets in actual environments was evaluated.
Boping Zhang - One of the best experts on this subject based on the ideXlab platform.
-
evaluation of susceptibility of high strength steels to delayed fracture by using cyclic Corrosion Test and slow strain rate Test
Corrosion Science, 2010Co-Authors: Songjie Li, Zuogui Zhang, Eiji Akiyama, Kaneaki Tsuzaki, Boping ZhangAbstract:To evaluate susceptibilities of high strength steels to delayed fracture, slow strain rate Tests (SSRT) of notched bar specimens of AISI 4135 with tensile strengths of 1300 and 1500 MPa and boron-bearing steel with 1300 MPa have been performed after cyclic Corrosion Test (CCT). During SSRT the humidity around the specimen was kept high to keep absorbed diffusible hydrogen. The fracture stresses of AISI 4135 steels decreased with increment of diffusible hydrogen content which increased with CCT cycles. Their delayed fracture susceptibilities could be successfully evaluated in consideration of both influence of hydrogen content on mechanical property and hydrogen entry.
Yan Wang - One of the best experts on this subject based on the ideXlab platform.
-
Corrosion behaviors and effects of Corrosion products of plasma electrolytic oxidation coated AZ31 magnesium alloy under the salt spray Corrosion Test
Applied Surface Science, 2016Co-Authors: Yan Wang, Guirong Jiang, Qin Yan, Changhong Guo, Chen Liu, Zhiquan Huang, Peng Liu, Yi Zhang, Dejiu ShenAbstract:The effects of Corrosion products on Corrosion behaviors of AZ31 magnesium alloy with a plasma electrolytic oxidation (PEO) coating were investigated under the salt spray Corrosion Test (SSCT). The surface morphology, cross-sectional microstructure, chemical and phase compositions of the PEO coating were determined using scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction analysis (XRD), respectively. Further, the Corrosion process of the samples under the SSCT was examined in a non-aqueous electrolyte (methanol) using electrochemical impedance spectroscopy (EIS) coupled with equivalent circuit. The results show that the inner layer of the coating was destroyed firstly and the Corrosion products have significant effects on the Corrosion behaviors of the coating. The results above are discussed and an electrochemical Corrosion model is proposed in the paper.
-
Laboratory soil Corrosion Test of steel grounding materials
2011 7th Asia-Pacific International Conference on Lightning, 2011Co-Authors: Xuan Fan, Songbo Huang, Jianguo Wang, Mi Zhou, Yan Wang, Peng DouAbstract:The most commonly used grounding materials in China are galvanized steel, copper and copper clad steel. The effect of grounding material Corrosion on the reliability of electronic equipment is of growing importance as the growing of power capacity. For better understanding the factors influencing the protective effects against Corrosion by zinc and copper coatings, two experiments have been performed and reported in this paper. The polarization curve Test is first conducted to obtain the uniform Corrosion rates. It can be found that copper clad steel coating has the best Corrosion resistance, while carbon steel has the worst. Then, DC accelerated electrolysation Test is introduced to compare the Corrosion behavior of galvanized steel and copper clad steel under the condition of defective coatings. The result shows that whether the coatings of galvanized steel are damaged or not, Corrosion arises mainly on zinc coatings. The breakage forms make little difference on Corrosion of steel substrate, due to the sacrificial protection of zinc coatings. When breakage area of copper clad steel coating is small, Corrosion exists mainly on copper coatings. As the breakage area of copper coatings increases, Corrosion will turn to arise mainly in the steel substrate. In the case that the coatings are damaged, copper clad steel coating has a greater Corrosion rate than that of galvanized steel coating.
