Crystalline Damage

However, the BET surface area of the catalysts after TPR experiment presented a drastic crystalline damage of the EXV catalyst and some crystallinity retention for the IMPV catalyst. These results agreed with the X-ray diffraction pattern after TPR measurements, as shown in Fig. 2. The crystalline difference for both catalysts was 20 %. 

Jeonga, T.S., Hana, M.S., Kima, J.H., Youna, C.J., Ryub, Y.R. and White, H.W. (2005) Crystallinity-damage recovery and optical property of As-implanted ZnO crystals by post-implantation annealing. Journal of Crystal Growth, 275, 541. 

At the turn of the century it was still widely believed that, while a metal in its nalural slate is crystalline, after bending backwards and forwards (i.e., the process of fatigue damage), metal loctilly becomes amorphous (devoid of crystalline structure). Isolated observations (e.g., Percy 1864) showed that evidence of... 

There is another result of frozen-in residual stresses that can be equally damaging to the product function and which affects materials that are not in the glassy state. This may affect an impact grade of material or a crystalline plastic even more drastically than a glassy material. The frozen-in stresses are real loads applied to the material and when even slightly elevated temperatures are applied stresses can cause the product to deform severely. 

Hard crystalline scale and deposition also may result from the interaction of silica, residual hardness, and inorganic coagulants carried over into the treated water. Also, pre-boiler system damage by erosion may occur. 

It is more difficult to control the enzymatic processing of wool. Hence there is a greater danger of fibre damage compared with cellulosic fibres. Since cellulose is a highly crystalline... 

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