Comparative Studies of Zn Alloys using LlBS and EDX Techniques

Abstract

Laser induced brcakdo\\/\ spectroscopy (LlBS) has been used to study lhe laser induced plasma of Zinc ami Alumi niulll . Five samples o f Zinc with varying concentration of Aluminiulll were prepared by mi xin g pure powders and pressing it unde r great pressures to fo rm prlllets. Q-switchcd Nd:YAG la ser has been used for ablation and Avn nles spectrometer was used to record emission spectrum ofnblflled plasma cove rin g the I'a nge of 250nm to 90011111 . In the present work, cnlibration curve (CC-Ll nS) lind cnli bration free LIDS (CF-LIllS) techniques have been used for qunntit nli\'c ly onolysc the samples. One line cal ibration c urve is used in e F-Li llS. For the <]uantitillive analysis using LlBS techn iq ue, the ablated plasma must be optical ly thin and rulrillhe eoudition or local thermodynamic equ ili briulIl condition. Temperature or ablat ed plasma was delennincd by the slope or Boltzmann plots ami eleclron number density was dctcnnincd by measuring Slark broadening ror AI peak. Quantitative Analysis or the sample was also ca rri ed OUI using morc standard techn iques i.c. EDX and IU~ ror comparison. Allhe end, it is concluded thaI ca libration curve method is much accurate than c::t libratioll rree LlBS technique which sti ll req uire morc research to be carried QlIt on it.