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腐蚀是造成金属损失的主要原因之一。全世界生产的金属有1/10因腐蚀而不能回收。据法国腐蚀研究中心报告,80年法国损失1150亿法郎、英国损失100亿英磅,约占各国国民经济产值的3～4％。工业发展越快,金属损失量越大。1949年美国损失55亿,60年代为100～200亿,70年代则上升为700亿,平均十年几乎翻两番。我国估计每年约损失人民币300亿、占国民经济产值的3.5％二次世界大战末亚硝二异丙胶和亚硝酸二环已胺在武器上的运用,推动了缓蚀剂的发展,但多限于钢铁方面。1950年美国研制成苯并三唑(BTA),并在有色金属中推广。60年代后期美国年产BTA2700吨。1980年增到一万吨,平均每年增长20％以上。我国对上述两
Corrosion is one of the main causes of metal loss. One-tenth of the metal produced worldwide can not be recycled due to corrosion. According to the French Corrosion Research Center, France lost 115 billion francs in 1980, while Britain lost 10 billion pounds, accounting for 3-4% of the national economic output of various countries. The faster the industry develops, the greater the amount of metal lost. In 1949, the United States lost 5.5 billion from its loss to 100 to 20 billion in the 1960s and 70 billion in the 1970s, nearly quadrupling on average in 10 years. Our country estimates an annual loss of about 30 billion yuan, accounting for 3.5% of the national economic output. The use of nitrosyldiisopropylenediamine and nitramine nitrite in World War II has promoted the development of corrosion inhibitors, but more Restricted to the steel side. In 1950, the United States developed benzotriazole (BTA) and promoted it in non-ferrous metals. In the late 1960s, the United States had an annual output of 2700 tons of BTA. 1980 to 10,000 tons, an average annual increase of more than 20%. My two pairs of the above