低温磷化现状及发展趋势

Present Situation and Development Tendency of Low Temperature Phosphating

低温磷化由于低能耗、低成本、低污染等特点,日益受到人们的关注。对低温磷化的特点、机理、促进剂、现状进行了研究,结果表明:目前主要采用电化学方法、化学方法、调整酸比和pH值等方法来降低磷化处理的温度,但低温磷化仍存在耐蚀性较差的缺点,难以满足大规模工业应用。由于磷化过程的复杂性,低温磷化的机理以及复合促进剂仍将是今后研究的重点。

Low temperature phosphating process has attracted much attention day by day because of its low energy consumption, low cost and low environmental pollution. The characteristics, mechanism, accelerants and present situation of low temperature phosphating process have been studied. It indicates that electro-chemical method, chemistry method, acidity and pH adjustment have been used in order to reduce the phosphating temperature, but low temperature phosphating still has the low corrosion resistance and can not suit for the large-scale industrial application. Because of the complexity of phosphating process, the study on the low temperature phosphating mechanism and compound accelerants will still be the key point.