Now a days surface analysis have many application in various knowledge fields and one of the important field is material surface analysis. This approach is concentrated on the image enhancement to arise and detect small obstacles during the surface. This approach allows individual features and details of the specimen to become visible In addition many statistical measures are applied to evaluate this performance of this approach. In the obtained measures, the signal-to-noise ratio must be large enough to be interpreted in terms of the formation of a coherent image.

This research studies the effect of adding micro, nano and hybrid by ratio (1:1) of (Al2O3,TiO2) to epoxy resin on thermal conductivity before and after immersion in HCl acid for (14 day) with normality (0.3 N) at weight fraction (0.02, 0.04, 0.06, 0.08) and thickness (6mm). The results of thermal conductivity reveled that epoxy reinforced by (Al2O3) and mixture (TiO2+Al2O3) increases with increasing the weight fraction, but the thermal conductivity (k) a values for micro and Nano (TiO2) decrease with increasing the weight fraction of reinforced, while the immersion in acidic solution (HCl) that the (k) values after immersion more than the value in before immersion.

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