SciELO - Scientific Electronic Library Online

vol.111 número5Quantitative study of the hardness property of laser surface alloyed aluminium AA1200A model to predict the performance of roadheaders based on the Rock Mass Brittleness Index índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados



Links relacionados

  • Em processo de indexaçãoCitado por Google
  • Em processo de indexaçãoSimilares em Google


Journal of the Southern African Institute of Mining and Metallurgy

versão On-line ISSN 2411-9717
versão impressa ISSN 0038-223X


POPOOLA, A.P.I.; PITYANA, S.L.  e  POPOOLA, O.M.. Microstructure and corrosion properties of Al(Ni/TiB2) intermetallic matrix composite coatings. J. S. Afr. Inst. Min. Metall. [online]. 2011, vol.111, n.5, pp.345-353. ISSN 2411-9717.

Laser coatings are used for a wide variety of applications. TiB2/Ni intermetallic matrix composite coatings were fabricated on Alsubstrate 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.

Palavras-chave : Corrosion; protective film; laser surface alloying; reinforcement.

        · texto em Inglês     · Inglês ( pdf )


Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons