研究了若干种钢在液氨中的SCC,以确定各影响因素及作用范围,找出球形压力容器破损的机理,开发防护方法。有一部分实验是这样进行的:将各种热处理状态的非合金钢和低合金钢的Jones焊接试样长时期地浸在装于一个球罐中的液氨里进行腐蚀试验。在实验室里,则设计一个特制设备,使圆柱形拉伸试样能在液氨中进行恒应变率试验,试验是在开路电位下或在控制电位下进行。 Several types of steel in liquid ammonia SCC were studied to determine the various influencing factors and scope of action, to find out the mechanism of spherical pressure vessel damage, development and protection methods. Some experiments were conducted by immersing Jones welded specimens of various heat-treated unalloyed and low-alloy steels into liquid ammonia contained in a spherical tank for a long period of time for corrosion testing. In the laboratory, a special equipment was designed so that a cylindrical tensile specimen can be subjected to a constant strain rate test in liquid ammonia under open-circuit potential or at controlled potential.