使用超临界水氧化反应中试装置.研究了钛合金(纯钛和铸钛)在超临界水氧化条件下(温度为400~600℃、压力为28~32 MPa)分解含氯废水时的腐蚀.经过30 d的试验,用金相光学显微镜和扫描电子显微镜观测腐蚀的形貌,结果表明,2种金属在含氯水溶液超临界水氧化条件下试验均存在腐蚀,用称重法对腐蚀速率进行了测试,其中.纯钛腐蚀速率为0.014 g/(m2.h)或0.43 mm/a.铸钛金属腐蚀速率为0.015 g/(m2.h)或0.45 mm/a.同时对其材质的腐蚀机理进行了揭示.
Titanic alloy steels were tested by supercritical water oxidation(temperature is from 400?℃ to 600?℃,pressure is from 28?MPa to 32?MPa) to the chlorine wastewater solution conditions in pilot-plant-scale experimental facility for 30 days.Results showed that two stainless steels exhibited general corrosion by optical microscope and SEM.The corrosion rates of pure titanic is 0.014?g/(m~2·h) or 0.43?mm/a,one of casting titanic is 0.015?g/(m~2·h) or 0.45??mm/a.And the mechanisms of the corrosion were opened out...