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Influence of hot-dip coatings on mechanical and corrosion behaviors of steel bolts |
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| รหัสดีโอไอ | |
| Creator | Thanit KENHONG,Gobboon LOTHONGKUM,Yuttanant BOONYONGMANEERAT |
| Title | Influence of hot-dip coatings on mechanical and corrosion behaviors of steel bolts |
| Publisher | Metallurgy and Materials Science Research Institute, Chulalongkorn University |
| Publication Year | 2557 |
| Journal Title | Journal of Metals, Materials and Minerals |
| Journal Vol. | 24 |
| Journal No. | 2 |
| Page no. | 49-53 |
| Keyword | Bolts, Corrosion, Hot dip galvanizing, Torque, Twist angle |
| ISSN | 8576149 |
| Abstract | Steel bolts are used for fastening structural components together, and hence high durability in terms ofthe mechanical and corrosion resistance is inevitably critical. The present study systematically compares theperformance of carbon steel (CS), stainless steel (SS), steels with Fe-Zn and with Zn-Ni protective coatinglayers prepared with hot-dip procedures (GI and GN), for the fastener applications. The torsion and hardnesstests, together with the salt spray study, show that CS has poor corrosion resistance, whereas SS exhibitsrelatively low yield strength. On the other hand, GI and GN show promising corrosion protection, withoutcompromising the mechanical integrity. Furthermore, the microstructure of the samples is examined to analyzethe rigidity of the coatings and to explain the corresponding behaviors of the materials. |
