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Air Force One Trainers Uk Research Association CATRA of Sheffield England
Bismuth oxide (Bi2O3) is prepared in its pure body centered cubic form (γ) without surfactant at a calcination temperature of 500 °C and its photocatalytic degradation property is studied using methyl orange as the model pollutant. γ-Bi2O3 degrades 95.2% of methyl orange in 90 min and the kinetics of degradation is studied using pseudo first and second order. The obtained results are found to be best fit in pseudo second order equation which predicts that the adsorption is controlled by more than one step and it is verified from the Weber–Morris equation. A study is presented on the relative wear rates of two carbon steels, a Damascus steel and a stainless steel, using the Cutlery and Buy Nike Air Max 90 Allied Trades Research Association (CATRA) of Sheffield England cutting test machine. The carbon steels and stainless steel were heat treated to produce a fine array of carbides in a martensite matrix. Tests were done at hardness values of HRC = 41 and 61. At HRC = 61 the Air Force One Trainers Uk stainless steel had slightly superior cutting performance over the carbon steels, while at HRC = 41 the Damascus steel had slightly superior cutting performance.