A comparative study of electrochemical properties of metallic glasses and weld overlay coatings

被引：7

作者：

Hejwowski, Tadeusz ^{[1
,2
]}

Marczewska-Boczkowska, Krystyna ^{[3
]}

Kobayashi, Akira ^{[4
]}

机构：

[1] Lublin Univ Technol, Fac Mech Engn, PL-20618 Lublin, Poland

[2] State Higher Sch Vocat Educ, PL-22400 Zamosc, Poland

[3] Lublin Univ Technol Lublin, Fac Elect Engn & Comp Sci, PL-20618 Lublin, Poland

[4] Osaka Univ, Joining & Welding Res Inst, Osaka 5670047, Japan

来源：

VACUUM | 2013年 / 88卷

关键词：

Plasma spraying; Gas tunnel plasma gun; Metallic glass; Hardfacing; Corrosion;

D O I：

10.1016/j.vacuum.2012.02.031

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The overlay coatings were corrosion tested in a 3% aqueous NaCl solution. The metallic glasses Ni60Nb20Zr20 coating plasma sprayed at 250 A arc current and the 45-50 mm spraying distance revealed the outstanding corrosion resistance and outperformed pad welded coatings. For all sprayed metallic glass coatings, the microhardness increased with the rising arc current. The corrosion resistance of Zr55Cu30Al10Ni5 sprayed deposits depends on their porosity and phase composition. The Ni- and Co-based hardfacings offer high corrosion resistance compared with the Fe-based ones. The corrosion resistance of Fe-based hardfacings is reduced by cracks and inclusions present in the coatings. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：118 / 123

页数：6

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