Conditions of Film for Mation of Octadecylamine on 20G Carbon Steel Surface at High Temperature
Shunan Cao · Surface Technology · 2011
Coupon test in autoclave was carried out by using uniform design and the film performance of the coupons was checked by film performance valuation test.The factors that effect the film formation of octadecylamine on 20G carbon steel surface at high temperature,such as temperature,concentration of octadecylamine,incubation time and pH,were researched.The results show that the order of the factors above is as below: pHtemperatureconcentration of ODAincubation time,and that the optimal condition of film formation of ODA on 20G carbon steel surface is that: pH is between 8.7 and 9.0,concentration of ODA between 60 and 70 mg/L,temperature between 470 ℃ and 480 ℃,and incubation time between 3 and 4 hours.