磷化处理对核主泵螺栓断裂行为的影响

赵东杨, 周宇, 王冬颖, 那铎

Effect of Phosphating on Hydrogen Embrittlement of SA-540 B23 Steel for Nuclear Reactor Coolant Pump Bolt

ZHAO Dongyang, ZHOU Yu, WANG Dongying, NA Duo

表2 B23材料磷化前后及去除磷化层后的氢含量

Table 2 Hydrogen contents of B23 main bolt specimens before and after phosphating and after removing the phosphating layer

Measurement value Before phosphating / mg·kg-1 After phosphating / mg·kg-1 After removing the phosphating layer / mg·kg-1 1 0.80 44.00 0.40 2 0.80 49.00 0.42 3 0.90 48.00 0.39 Average value 0.83 47.00 0.40