Journal of Jilin University(Engineering and Technology Edition) ›› 2019, Vol. 49 ›› Issue (3): 816-821.doi: 10.13229/j.cnki.jdxbgxb20180263

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Correlation between metal surface morphology and metal⁃plastic direct adhesion strength

Fang⁃wu MA1,2(),Shi⁃xian CHEN1,2,Lu HAN1,2,Hong⁃yu LIANG1,2,Yong⁃feng PU1,2()   

  1. 1. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
    2. Qingdao Automotive Research Institute, Jilin University, Qingdao 266043, China
  • Received:2018-03-23 Online:2019-05-01 Published:2019-07-12
  • Contact: Yong?feng PU E-mail:mikema@jlu.edu.cn;puyongfeng@jlu.edu.cn

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Abstract:

The correlation between metal surface morphology and metal?plastic direct adhesion strength was studied. First, the oxide film on the metal surface was removed by acid and alkali solution. Then, the metal surface was treated by fiber laser, and the hot pressing connection between metal and plastic was completed by plate vulcanizing machine. Third, the effects of different laser power and different scanning density on the direct bonding strength of metal?plastic were investigated. Finally, the correlation between the surface characteristics of metals and the direct connection strength of metal?plastic direct adhesion was analyzed based on the microstructure morphology and Scanning electron microscope (SEM). The results show that the direct connection strength of metal?plastic increases first and then decreases with the increase in laser power. With the increase in scanning density, the strength of direct connection between metal?plastic increases.

Key words: manufaturing technology and equipment, metal surface morphology, bonding strength of metal?plastic, laser power, scanning density

CLC Number: 

  • TH161

Fig.1

Metal?plastic direct connection process"

Fig.2

Surface micromorphology of aluminum alloy"

Fig.3

Influence of laser power on adhesion strength"

Fig.4

Microscopic schematic of metal surface"

Fig.5

Influence of scanning density on connection strength"

Fig.6

Specimen of metal?plastic direct adhesion"

Fig.7

Fracture failure diagram of metal?plastic direct connection specimen"

Fig.8

Cross section of metal?plastic direct adhesion"

Fig.9

Morphology of polylactic acid residues in aluminum alloy surface"

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