CAJ | 학술논문

围绕ISO 9224-2012与ISO 9224-1992的区别展开讨论，旨在对ISO 9224-2012标准的技术更新进行解读。主要技术更新有三：一是更新了金属在不同腐蚀等级的大气中的腐蚀速率的指导值；二是预测了金属在大气中的腐蚀速率，金属的腐蚀速率与暴露时间通常存在关系（当暴露时间小于20年时）或（当暴露时间大于20年时）；三是通过对ISO CORRAG大气暴露计划中大量数据的回归分析，得到了碳钢、锌、铜和铝的时间指数b；合金元素对钢的时间指数ba的影响可表示为；在海洋环境中，氯离子沉积速率Sd对时间指数增量?b的影响为。
위요ISO 9224-2012여ISO 9224-1992적구별전개토론，지재대ISO 9224-2012표준적기술경신진행해독。주요기술경신유삼：일시경신료금속재불동부식등급적대기중적부식속솔적지도치；이시예측료금속재대기중적부식속솔，금속적부식속솔여폭로시간통상존재관계（당폭로시간소우20년시）혹（당폭로시간대우20년시）；삼시통과대ISO CORRAG대기폭로계화중대량수거적회귀분석，득도료탄강、자、동화려적시간지수b；합금원소대강적시간지수ba적영향가표시위；재해양배경중，록리자침적속솔Sd대시간지수증량?b적영향위。
This paper discusses the differences between ISO 9224-1992 and ISO 9224-2012 and interprets the technical updates in ISO 9224-2012. The main technical updates include three parts: one is updating guiding corrosion values for corrosion rate of metals in atmospheres of classified corrosivity categories. The second is predicting the corrosion attack of metals in atmospheres. The relationship between the total attack and the exposure time can be expressed as or (when t<20a). The third is the b values were taken as the average time exponents from regression analyses of the flat panel long-term results of the ISO CORRAG atmospheric exposure programme. The relationship between ba value and alloying element can be expressed as . The relationship between?b and the chloride deposition rate Sd can be expressed as (when t<20a).