CAJ | 학술논문

在不同保护温度下采用钨极氩弧焊＋高纯氩气作为保护气体的焊接方法将锆R60702板材连接起来，并利用电化学腐蚀手段和扫描电镜的形貌观察等方法，研究R60702在醋酸中的腐蚀行为。试验结果表明：在5mol／L的醋酸溶液中，接头的腐蚀类型以点蚀为主。保护温度在800℃时，锆R60702的耐腐蚀性能严重下降，而保护温度在315℃和400℃下时，其耐腐蚀性能与严格保护下没有很明显的下降。
재불동보호온도하채용오겁아호한＋고순아기작위보호기체적한접방법장고R60702판재련접기래，병이용전화학부식수단화소묘전경적형모관찰등방법，연구R60702재작산중적부식행위。시험결과표명：재5mol／L적작산용액중，접두적부식류형이점식위주。보호온도재800℃시，고R60702적내부식성능엄중하강，이보호온도재315℃화400℃하시，기내부식성능여엄격보호하몰유흔명현적하강。
Taking TIG ＋ high-purity argon as protective gas welding method to link the zirconium R60702 plate at different protection temperatures, and using electrochemical corrosion and the morphology observation of optical microscope, R60702 corrosion behavior in acetic acid was studied. The results showed that in 5 mol/I, acetic acid solution, the dominated corrosion type of welded joints was pitting corrosion. The corrosion resistance of zirconium R60702 seriously declined when the protection temperature was at 800℃, and when the protection temperature was at 315℃ and 400℃, its corrosion resistance had no obvious decline compared with the welding state under strict protection.