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玻璃透明度不僅决定於氧化铁在玻璃中的含量,而且也决定於铁的氧化程度。铁在玻璃内,可能处於氧化物的状态——Fe_2O_3和一氧化物的状态——FeO。氧化铁使玻璃染上黄绿色,而氧化亚铁染成蓝绿的颜色。在玻璃烧成的过程中,二种氧化物是处在平衡状态中的: Fe_2O_3→←2FeO+1/2O_2。由於温度升高,窖中的空气因有还原作用和熔剂中含有还原剂,平衡向右方进行。温度降低、窖的空氧有氧化作用,同时熔剂里含有氧化剂,平衡向左方进行。对於两侧平衡进行的机会,时间的
Glass transparency depends not only on the amount of iron oxide in the glass, but also on the degree of iron oxidation. Iron in the glass may be in the oxide state - Fe2O3 and the state of the oxide - FeO. Iron oxide causes the glass to be dyed yellowish green while the ferrous oxide dyed blue-green. During the firing of glass, the two oxides are in equilibrium: Fe 2 O 3 → ← 2FeO + 1 / 2O 2. As a result of the temperature increase, the air in the cellar is reduced to the right due to the reduction and the flux contains a reducing agent. Lower temperature, cellar oxygen is oxidized, while the flux contains oxidants, balance to the left. For both sides of the balance of opportunities, the time