Author(s)

P. Sita Rama Rao, P. B. V. Prasad, P. B. Shashikanth

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The VTLLS microscopy studies were made on high purity gold and commercial grade zinc grains in a temperature range of 30-230?C. Differential area ω and surface activity Sa were estimated from photomicrographs. The ω vs dT/dt (rate of heating) curve was seen to differ from those of silver and titanium. The nature of curve between normalized ω and dT/dt was seen to be non-exponential. The characteristic relation between sectorized differential area ωsec and mean temperature was examined. The present study further establishes the simplicity and versatility of the VTLLS technique, in studying the defect-sub-structure of metal particles such as Au and Zn in presence of an imposed temperature gradient in a reasonable way. As such an attempt was made to connect the ω and defect-sub-structure related parameters.

Variable Temperature, Laser Light Scattering Microscopy, Au and Zn Grains, Defects

P. Rao, P. Prasad and P. Shashikanth, "Variable Temperature Laser Light Scattering Microscopy (VTLLSM) Studies on 10-100 μm Size High Purity Gold and Commercial Grade Zinc Grains," Materials Sciences and Applications, Vol. 1 No. 6, 2010, pp. 329-335. doi: 10.4236/msa.2010.16048.