Effect of TiN/electroless ni duplex coatings on surface hardness and erosion behavior of ADI
This study utilized electroless nickel (EN) and cathodic arc evaporation (CAE) technologies, with the known advantage of low processing temperature, to treat the austempered ductile iron (ADI) substrates. The eligibility of applying the EN and CAE-TiN duplex coatings on ADI, along with the coating properties, such as structure, roughness, adhesion, and surface hardness were evaluated and analyzed. Moreover, erosion tests were performed to further understand the effect of EN interlayer thickness on the erosion behavior of TiN-coated ADI. The results showed that the unique microstructure of ADI did not deteriorate after EN and CAE treatments. By the way of TiN/EN duplex coatings, surface hardness of the coated ADI largely increased from 398 to 2243 Hv with an increase of EN thickness. Moreover, the duplex coated ADI had a noticeable performance on erosion protection under a specific erosive environment with Al2O3 particles.
Austempered ductile iron Cathodic arc evaporation Electroless nickel Surface hardness Erosion
Cheng-Hsun Hsu Kuan-Hao Huang Yi-Tsung Chen
Department of Materials Engineering, Tatung University, Taipei 104, Taiwan
国际会议
北京
英文
636-639
2012-10-23（万方平台首次上网日期，不代表论文的发表时间）