Microstructure and corrosion properties of Al(Ni/TiB2) intermetallic matrix composite coatings

被引：0

作者：

Popoola, A. P. I. ^{[1
]}

Pityana, S. L. ^{[2
]}

Popoola, O. M. ^{[1
]}

机构：

[1] Tshwane Univ Technol, Pretoria, South Africa

[2] Natl Laser Ctr, Ctr Sci & Ind Res, Pretoria, South Africa

来源：

JOURNAL OF THE SOUTH AFRICAN INSTITUTE OF MINING AND METALLURGY | 2011年 / 111卷 / 05期

关键词：

Corrosion; protective film; laser surface alloying; reinforcement; WEAR-RESISTANCE; TITANIUM DIBORIDE; CHLORIDE SOLUTION; ALUMINUM-ALLOY; LASER; BEHAVIOR; TIB2; NITI; HARD;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Laser coatings are used for a wide variety of applications. TiB2/Ni intermetallic matrix composite coatings were fabricated on Al-substrate by a high power Rofin Sinar Nd: YAG solid-state laser. The characterization of the coatings was carried out by optical microscopy (OM), scanning electron microscopy (SEM/EDS) and Xray Diffraction (XRD). Electrochemical study of the laser coatings in 3.65 per cent NaCl at room temperature revealed that with very high weight proportion of nickel the corrosion resistance of the coatings deteriorated due the presence of AlB10 phase. 50 wt per cent TiB2+50 wt per cent Ni laser coatings exhibited the highest corrosion resistance in test solution.

引用

页码：345 / 353

页数：9

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