Aluminum alloy reinforced with boron fibers

Sectioning Diamond wheel Mounting In epoxy resin  

Step Abrasive Grain size Working Lubricant Load RPM Time 

Grinding Diamond 20 Disk or film Water 20 150 Until flat 

Polishing Diamond 6 Perforated synthetic fiber cloth Suspension 20 150 5 

Etching (1) Contrast enhancement by vapor deposition of ZnTe coatings or by reactive sputtering with a Fe cathode and oxygen gas. 

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Table 45. Recommended preparation of an aluminum alloy reinforced with boron fibers...

In another paper [ the results of specific heat measurements on 10 metallic alloy samples were considered. This paper discusses specific heat measurements on four composite (i.e., fiber-reinforced) materials, one of which (boron/aluminum) is essentially metallic, and the other three are resin-based. The resin-based composites are more difficult to measure than metallic samples, and in analyzing the resulting data, the assembling of an appropriate fitting function is more complicated. As with the Fe-Ni base alloys [ ], specific heats were measured in the low-temperature range (3 to 20 K) and at the intermediate temperatures 80 K and 300 K. Because of difficulties associated with long thermal-relaxation times at these temperatures, considerable experimental scatter is associated with the results for the resin-based specimens. 

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