Large fibrous grains

Figure 8.6 shows the microstructure of the seeded (2 vol%) and tapesilicon nitride. Flere, the large fibrous grains with a diameter of a few micrometers and a... 

When Sun et al. [42] used tn-stfuscanning electron microscopy (SEM) to observe the interaction between the cracks and the microstmctures, the interfacial debonding behavior between the large fibrous grains and the intergranular glass was seen to vary... 

Figure 8.17 In situ observations of crack interacting with the large fibrous grains.

Figure 8.21 Microstructures of porous silicon nitride with large fibrous grain alignment (porosity 14%). Reprinted with permission from Ref [50] 2000, Blackwell Publishing, Inc.

Fibrous Grain-Aligned Silicon Nitrides (Large Grains) 355... 

DisK Presses Figure 18-157 shows a disk press. The two disks, or press wheels, converge to a veiy narrow space at the bottom. This is the point of maximum compression, which can be more than 14 times the feed pressure. The press wheels have channels to cany the hquid from the dewatered product, and they are covered with a screen plate. Wheels 1.5 m (5 ft) in diameter are used on a large press that requires about 80 connected horsepower and produces just under 1 tonne/h (0.9 ton/h) of sohds (diy basis). Typical apphcations are fibrous materials such as coffee grounds, pineapple and citrus peels and wastes, alfalfa, and brewers spent grain. 

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