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 urn 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.
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 urn 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.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2004年第05B期1088-1091,共4页
Transactions of Materials and Heat Treatment
关键词
无电钴涂覆
断裂韧度
厚度
模型
Electroless Nickel coatings, modeling, fracture toughness, thickness
