磷酸三乙醇胺-磷酸二氢盐浓度为135×10-4％～225×10－4％时能在天然海水中的钢铁表面形成一层化学稳定性好的保护膜，能有效地抑制钢铁的海水腐蚀，缓蚀率高达99．49％，具有使用浓度低，缓蚀率高，原材料价廉易得，无毒，无污染等特点。 Triethanolamine phosphate - dihydrogen phosphate concentration of 135 × 10-4% to 225 × 10-4% in the natural sea water can form a layer of steel surface chemical stability of the protective film can effectively inhibit the sea water of steel Corrosion, corrosion inhibition rate as high as 99.49%, with the use of low concentration, high corrosion inhibition, cheap raw materials, non-toxic, non-polluting and so on.