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采用电偶腐蚀试验和静态阻垢试验 ,研究了高温 (85± 2℃ )冷却水系统中有机膦羧酸 (PBTCA)的缓蚀阻垢性能。试验结果表明 :PBTCA对铸铝 碳钢电偶腐蚀具有优良的缓蚀效果 ,而对铸铁 碳钢、焊锡 黄铜、黄铜 铜电偶腐蚀的缓蚀作用不大 ;PBTCA阻垢性能优良 ,浓度在 5mg/L时阻垢率就可达到 90 %
The corrosion resistance and scale inhibition performance of organophosphonic carboxylic acid (PBTCA) in high temperature (85 ± 2 ℃) cooling water system were studied by galvanic corrosion test and static scale inhibition test. The results show that PBTCA has good corrosion inhibition effect on the galvanic corrosion of cast aluminum carbon steel, but little corrosion inhibition on galvanic corrosion of cast iron carbon steel, solder brass and brass copper; PBTCA has excellent scale inhibition performance, At 5mg / L, the scale inhibition rate can reach 90%