Effects of low-temperature duplex coatings on corrosion behavior of austempered ductile iron

被引：7

作者：

Hsu, Cheng-Hsun ^{[1
]}

Chen, Kai-Lin ^{[1
]}

Lee, Chun-Ying ^{[1
]}

Lu, Kuan-Chain ^{[1
]}

机构：

[1] Tatung Univ, Dept Mat Engn, Taipei 10451, Taiwan

来源：

SURFACE & COATINGS TECHNOLOGY | 2009年 / 204卷 / 6-7期

关键词：

Electroless nickel; Cathodic arc evaporation; ADI; CrTiAlN; Corrosion resistance; RESISTANCE;

D O I：

10.1016/j.surfcoat.2009.04.002

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This study utilized electroless nickel (EN) and cathodic arc evaporation (CAE) technologies, with the known advantage of low processing temperature (EN = 90 degrees C and CAE = 230 degrees C), to treat the austempered ductile iron (ADI) substrate. The eligibility of applying the EN and CAE-CrTiAlN duplex coatings on ADI, along with the coating properties, such as structure, roughness, and adhesion, were evaluated and analyzed. Moreover, polarization and immersion tests were performed to further understand the effects of the coatings on the corrosion resistance of ADI. The results showed that the unique microstructure of ADI did not deteriorate after EN and CAE treatments. With regard to corrosion resistance, the duplex coated specimens performed better than did the uncoated and monolithic EN or CrTiAlN coated ones in 3.5 wt.% NaCl and 10 vol.% H(2)SO(4) aqueous solutions. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：997 / 1001

页数：5

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