首页|Enhancing adhesive bond strength of CFRP/titanium joints through NaOH anodising and resin pre-coating treatments with optimised anodising conditions
Enhancing adhesive bond strength of CFRP/titanium joints through NaOH anodising and resin pre-coating treatments with optimised anodising conditions
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Adhesively Bonded Carbon Fibre Reinforced Plastic(CFRP)and titanium alloy have been extensively used as a hybrid structure in modern aircrafts due to their excellent combination of mechanical properties and chemical stabilities.This study utilised NaOH anodising method to create micro-rough titanium surfaces for enhancing adhesive bonding between titanium alloy and CFRP laminates.A special and simple technique named Resin Pre-Coating(RPC)was also employed to improve the surface wetting of anodised titanium and grinded CFRP substrates.The influences of anodising temperature and duration on the surface morphology,wettability and adhesive bond strength were investigated.The single lap shear test results showed that the bond strength of specimens anodised at 20 ℃ for 15 min improved by 1 35.9％and 95.4％,respectively,in comparison with that of acid pickled and grinded specimens(without RPC treatment).Although increasing the anodising temperature and duration produced rougher titanium surfaces,the adhe-sively bonded joints were not strong enough due to relatively friable titanium oxide layers.
Yunsen HU、Jingheng ZHANG、Lin WANG、Fei CHENG、Xiaozhi HU
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School of Materials and Chemistry,Southwest University of Science and Technology,Mianyang 621000,China
School of Mechanical Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China
Engineering Research Center of Biomass Materials,Ministry of Education,Southwest University of Science and Technology,Mianyang 621010,China
Department of Mechanical Engineering,Universiiy of Western Australia,Perth,WA 6009,Australia
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National Natural Science Foundations of ChinaNatural Science Foundations of Sichuan Province,ChinaFundamental Research Funds of Jiangsu University of Science and Technology,China
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