Aluminum photomicrograph

The trajectories of low-mass ions in a QIT were shown to be similar to those observed for charged aluminum dust particles. [146-149] Wuerker recorded Lis-sajous trajectories, superimposed by the RF drive frequency, as a photomicrograph (Fig. 4.44). [146] The complex motion of the ions is the result of the two superimposed secular oscillations in r and r direction. 

Figure 1.80 SEM photomicrograph of a CaO-AEOs fiber embedded in 4032 aluminum alloy [3], Reprinted, by permission, copyright 1994 by Kluwer Academic Publishers.

The evaluation and demonstration of this weldi ng technique was accomplished in three phases evaluation and optimization of ten major expl welding variables (plate material, plate thickness, explosive quantity standoff, plate surface, plate deformation, mechanical shock, metal grain orientation, weld length, and expl residual), the development of four welu joints, and an a fplicationai analysis which included photomicrographs, pressure integrity tests, vacuum effects, and fabrication of some potentially useful structures in aluminum and titanium... 

Each sample was cemented to a specimen holder and then was coated with approximately 200 X of aluminum in an EFFA Rotary Vacuum Evaporator. The photomicrographs were obtained from a Cambridge Model S180 Scanning Electron Microscope. 

Aluminum Alcoa 101. This product is useful as a source of very large particles when blending aluminums. The first photomicrograph of this aluminum shows the many fines which are too small and too irregular. This aluminum gives poor spritz in most mixes if used alone. (1mm = 5 microns)... 

Photomicrographs of spritzels in early formation stages. Note the formation of a spheroidal shell of aluminum aggregate. These spritzels were producing very short spurets. (1 mm = 20 microns)... 

In the photomicrographs above, the layer of potassium sulfate has been rendered transparent to allow observation of the aluminum aggregates and their structure. 

Figure 7. Photomicrograph (lOOX) of foam sample prepared with flaky aluminum. Cell diameter is ca. 0.5 mm.

Fig. 5 SEM photomicrograph of sample of manganese ferrite particles dried on aluminum stub. Length of white bar in mid-bottom section of photograph represents 1 pm...

The etchant used for revealing the grain structure was a solution of 49 parts methyl alcohol, 49 parts distilled water and 2 parts hydrofluoric acid. This was used electrolytically with a potential of 30 volts for a period of one and a half minutes. This etchant was used on the 5086 aluminum for grain structure photomicrographs both with and without polarized light. In the weldmetal, the grains were only visible under polarized light. 

Photomicrograph showing a reversible-matrix interface (i.e., a black-on-white to white-on-black pattern reversal a la Escher) for an aluminum-copper eutectic alloy. Magnification unknown. 

Figure 13.4 Photomicrograph of an aluminum oxide bonded ceramic abrasive. The hght regions are the AI2O3 abrasive grains the gray and dark areas are the bonding phase and porosity, respectively. 100 X.

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