Adhesive Force Improvement of Lamination with 18-8 Stainless Steel and CFRP Separately Irradiated by Electron Beam Prior to Assembly and Hot-Pressing

DOI Web Site Web Site 被引用文献2件 参考文献29件 オープンアクセス
  • Minegishi Akiko
    Graduate School of Engineering, Tokai University
  • Kanda Masae
    Graduate School of Engineering, Tokai University Department of Materials Science, Tokai University
  • Faudree Michael C.
    Department of Materials Science, Tokai University
  • Jimbo Itaru
    Graduate School of Engineering, Tokai University Department of Materials Science, Tokai University
  • Nishi Yoshitake
    Graduate School of Engineering, Tokai University Department of Materials Science, Tokai University

書誌事項

公開日
2016
DOI
  • 10.2320/matertrans.mbw201511
公開者
公益社団法人 日本金属学会

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説明

Adhesive 2-layer lamination joints of 18mass%Cr-8mass%Ni austenite stainless steel and carbon fiber reinforced polymer (18-8/CFRP) were prepared using a new adhesion method consisting of applying low dose of 0.13 MGy of homogeneous low energy electron beam irradiation (HLEBI) to connecting surfaces of the 18-8 and CFRP prior to assembly and hot-pressing in vacuum under atmospheric pressure of about 1 Pa for 2 h at 401±0.5 K. Although untreated 18-8/CFRP joint exhibited decent adhesion by hot-pressing, application of 0.13 MGy HLEBI dose apparently improved the adhesive force of peeling resistance (oFp) of the 18-8/CFRP joint 145% at median accumulative peeling probability (Pp=0.50) from 18.9 to 27.4 Nm−1. In addition, the statistically lowest oFp for safety design (Fs at Pp=0) iterated by the 3-parameter Weibull equation was raised from zero for the untreated to 5.2 Nm−1 for the 0.13 MGy samples indicating increased reliability by the HLEBI. The higher adhesive strength induced by HLEBI was explained by results of XPS (X-Ray Photoelectron Spectroscopy) observations of the peeled surface of 18-8 side of lamination with and without 0.13 MGy-HLEBI. 0.13 MGy-HLEBI slightly increased the number of C=C bonds instead of slightly decreasing the numbers of C-C, C-H and O=C-O bonds near 18-8/CFRP interface. In addition, both increasing oxygen atoms and decreasing hydrogen atoms strongly attributed to bonding force at interface of epoxy of 18-8/CFRP. Since the experimental data showed the optimum HLEBI dose was about 0.13 MGy, above which at 0.13 MGy the oFp began to drop, carefulness in optimization was highly recommended when applying in industry to insure safety.

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