Modeling of Fracture Toughness of Electroless Nickel (EN) Coatings
来源期刊：材料热处理学报2004年第5期
论文作者：K. Zangeneh F.Ashrafizadeh S.M. Monir-vaghefi
关键词：Electroless Nickel coatings; modeling; fracture toughness; thickness;
摘 要：In the present reserch, a model has been proposed for estimate fracture toughness of Nickel-phosphorus (EN)layers. For this purpose, high phosphorus (9%) EN coatings with thicknesses of 6, 12, 24, 36 and 48 μm were applied on steel substrates and then treated as conventional process. Fracture toughness of coatings was obtained using Vickers indentation method. It is found that fracture toughness increses as coating thickness reduces. Effect of coating thickness on fracture toughness was exhibited by various models. Evaluation of models revealed good agreement between of proposed model (Kc=f(t,t2)) and experimental data.
K. Zangeneh1，F.Ashrafizadeh3，S.M. Monir-vaghefi3
(1.Department Of Engineering, Islamic Azad University-Saveh Branch, Saveh 39187, Iran ;
2.Department Of Materials And Chiemical Engineering, Malek Ashtar University Of Technology, Iran;
3.Department Of Materials Engineering, Isfahan University Of Technology, Isfahan 84154, Iran)
摘要:In the present reserch, a model has been proposed for estimate fracture toughness of Nickel-phosphorus (EN)layers. For this purpose, high phosphorus (9%) EN coatings with thicknesses of 6, 12, 24, 36 and 48 μm were applied on steel substrates and then treated as conventional process. Fracture toughness of coatings was obtained using Vickers indentation method. It is found that fracture toughness increses as coating thickness reduces. Effect of coating thickness on fracture toughness was exhibited by various models. Evaluation of models revealed good agreement between of proposed model (Kc=f(t,t2)) and experimental data.
关键词:Electroless Nickel coatings; modeling; fracture toughness; thickness;
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