Mechanical thinning

Mo bicrystal slices of 1 mm thickness were cut by spark erosion, then mechanically thinned to a thickness of 0.1mm. Discs of 3 mm diameter were then prepared and placed in the experimental assembly illustrated in Figure 5.44. 

H.S. Kwok, X.W. Sun, and D.H. Kim, Pulsed laser deposited crystalline ultrathin indium tin oxide films and their conduction mechanisms, Thin Solid Films, 335 299-302, 1998. 

J.E.E. Baglin, H.A. Atwater, D. Gupta, F.M. d Heurle. Radioactive Ni tracer study of the nickel silicide growth mechanism // Thin Solid Films - 1982 - V.93 - P.255-264. 

Fig. 2.1-14 Comparison ofthe total reaction rate as a function of the partial pressure ofthe starting material under the assumption of a Langmuir-Hinshelwood (thick curve, Equation 2.1-40) and an Eley-Rideal mechanism (thin curve, Equation 2.1-43).

The nucleation behavior of the modified B-eucryptite was determined by heating the glass rods (4 wt % Zr02) at 650°C, 700°C, 720°C, and 750°C for 2 h. These temperatures were chosen based on differential thermal analysis (DTA) of the glass using a Perkin Elmer model DTA 1700. Discs approximately 0.3 mm thick were sliced from each heat treated rod using a diamond saw, then mechanically thinned, dimpled, and ion-milled to examine the nucleation using TEM. 

At the outer edge of the spray cone, where large velocity gradients and thus high shear rates in the gas flow can be found, complex interactions between gas and droplets take place that may lead to the formation of characteristic cluster structures (Fig. 19.16 left). Two mechanisms that are closely related have been identified for the formation of droplet clusters in the spray. Through the first mechanism thin filamentary clusters can be formed in the vicinity of shear layer vortices by centrifuging. Clusters are formed spontaneously and the thin filamentary structures concentrate around void zones. 

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