Popoola, APIPityana, Sisa LPopoola, OM2011-11-092011-11-092011-10Popoola, API, Pityana, SL and Popoola, OM. 2011. Laser deposition of (Cu + Mo) alloying reinforcements on AA1200 substrate for corrosion improvement. International Journal of Electrochemical Science, Vol 6(2011), pp 5038 - 50511452-3981http://www.electrochemsci.org/papers/vol6/6105038.pdfhttp://hdl.handle.net/10204/5272Copyright: 2011 Electrochemical Science Group (Listed in the Directory of Open Access Journals - DOAJ)Poor corrosion performance of aluminium alloys in marine environment has been a subject of intensive research recently. Aluminium substrate was alloyed with a combination of two metallic powders (Cu + Mo) using an Nd: YAG solid state laser. Solidification of the laser induced melt pool led to the precipitation of different intermetallic compounds. Characterisation of the resultant microstructure was carried out by optical and scanning electron microscopes. X-ray diffraction and energy dispersive spectrometry was used for phase and elemental composition analyses respectively. Experimental results showed that the microstructure of the alloyed zone consisted of a continuous network of Al2Cu precipitates which is the initial phase at the background enveloping the Al-matrix, on top of the initial phase are the Al5Mo intermetallic precipitates and eutectics of (a-Al + Al2Cu) and (a-Al + Al5Mo). The addition of 50%Cu and 50%Mo to the Al solid solution increased the electrode potential; decreased the anodic activation; promoted the formation of stable passivation on the surface of aluminium and greatly deceased corrosion reactions. A significant increase in the corrosion resistance of the aluminium was achieved as a result of laser surface alloyingenIntermetallicsLaser alloyed layerCorrosionAnodic reactionAluminium alloysMarine environment aluminium alloysElectrochemistryBioelectrochemistryElectrochemical engineeringArticlePopoola, A., Pityana, S. L., & Popoola, O. (2011). Laser deposition of (Cu + Mo) alloying reinforcements on AA1200 substrate for corrosion improvement. http://hdl.handle.net/10204/5272Popoola, API, Sisa L Pityana, and OM Popoola "Laser deposition of (Cu + Mo) alloying reinforcements on AA1200 substrate for corrosion improvement." (2011) http://hdl.handle.net/10204/5272Popoola A, Pityana SL, Popoola O. Laser deposition of (Cu + Mo) alloying reinforcements on AA1200 substrate for corrosion improvement. 2011; http://hdl.handle.net/10204/5272.TY - Article AU - Popoola, API AU - Pityana, Sisa L AU - Popoola, OM AB - Poor corrosion performance of aluminium alloys in marine environment has been a subject of intensive research recently. Aluminium substrate was alloyed with a combination of two metallic powders (Cu + Mo) using an Nd: YAG solid state laser. Solidification of the laser induced melt pool led to the precipitation of different intermetallic compounds. Characterisation of the resultant microstructure was carried out by optical and scanning electron microscopes. X-ray diffraction and energy dispersive spectrometry was used for phase and elemental composition analyses respectively. Experimental results showed that the microstructure of the alloyed zone consisted of a continuous network of Al2Cu precipitates which is the initial phase at the background enveloping the Al-matrix, on top of the initial phase are the Al5Mo intermetallic precipitates and eutectics of (a-Al + Al2Cu) and (a-Al + Al5Mo). The addition of 50%Cu and 50%Mo to the Al solid solution increased the electrode potential; decreased the anodic activation; promoted the formation of stable passivation on the surface of aluminium and greatly deceased corrosion reactions. A significant increase in the corrosion resistance of the aluminium was achieved as a result of laser surface alloying DA - 2011-10 DB - ResearchSpace DP - CSIR KW - Intermetallics KW - Laser alloyed layer KW - Corrosion KW - Anodic reaction KW - Aluminium alloys KW - Marine environment aluminium alloys KW - Electrochemistry KW - Bioelectrochemistry KW - Electrochemical engineering LK - https://researchspace.csir.co.za PY - 2011 SM - 1452-3981 T1 - Laser deposition of (Cu + Mo) alloying reinforcements on AA1200 substrate for corrosion improvement TI - Laser deposition of (Cu + Mo) alloying reinforcements on AA1200 substrate for corrosion improvement UR - http://hdl.handle.net/10204/5272 ER -