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首页> 外文会议>12th International Conference on Environmental Degradation of Materials in Nuclear Power Systems: Water Reactors 2005 vol.2 >EFFECT OF THE CHROMIUM CONTENT AND STRAIN ON THE CORROSION OF NICKEL BASED ALLOYS IN PRIMARY WATER OF PRESSURIZED WATER REACTORS
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EFFECT OF THE CHROMIUM CONTENT AND STRAIN ON THE CORROSION OF NICKEL BASED ALLOYS IN PRIMARY WATER OF PRESSURIZED WATER REACTORS

机译：铬含量和应变对压水反应堆原水中镍基合金腐蚀的影响

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摘要

Chromium is known to enhance the corrosion and stress corrosion cracking behaviour of nickel-based alloys in high temperature water. A study has been launched to characterize these effects for alloys containing chromium concentrations ranging from 5% to 30%. This present paper compares the growth of oxide scale in these alloys in PWR primary water, and investigates the effects of applied stress. A detailed characterization of the oxide scale is performed by SEM, TEM and SIMS. Increasing chromium content results in an increase in chromium content of the protective oxide scale and decreases the oxide thickness. Applied stress, however acts to increase oxide thickness and decrease the chromium content of the oxide scale.
机译：众所周知，铬可以增强镍基合金在高温水中的腐蚀和应力腐蚀开裂行为。已经开展了一项研究来表征铬含量在5％至30％范围内的合金的这些影响。本文比较了这些合金在压水堆原水中的氧化皮生长，并研究了施加应力的影响。氧化皮的详细表征是通过SEM，TEM和SIMS进行的。铬含量的增加导致保护性氧化皮的铬含量的增加并降低了氧化物的厚度。然而，施加的应力起到增加氧化物厚度并降低氧化物鳞片中铬含量的作用。

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