CAJ | 학술논문

通过X-射线衍射仪（XRD）对经过不同表面处理的两种不锈钢（1Cr18Ni9Ti）表面进行物相分析,采用失重法测定其在氟硼酸清洗剂中的腐蚀速度,同时借助扫描电镜及电子扫描探针观测浸泡过程中不锈钢的表面腐蚀形貌及其表面粗糙度的变化特征。结果表明：不锈钢在沸腾的浓硝酸中形成一层氧化物后作为模拟污染物相对于未处理前表面含有较多铁的碳化物;在反应初期,前者的耐腐蚀性大于后者;同时表面相对于未处理前出现了比较明显的晶间腐蚀形貌,表面粗糙度Ra也经历了一个先减小后增大,再减小的过程。
통과X-사선연사의（XRD）대경과불동표면처리적량충불수강（1Cr18Ni9Ti）표면진행물상분석,채용실중법측정기재불붕산청세제중적부식속도,동시차조소묘전경급전자소묘탐침관측침포과정중불수강적표면부식형모급기표면조조도적변화특정。결과표명：불수강재비등적농초산중형성일층양화물후작위모의오염물상대우미처리전표면함유교다철적탄화물;재반응초기,전자적내부식성대우후자;동시표면상대우미처리전출현료비교명현적정간부식형모,표면조조도Ra야경력료일개선감소후증대,재감소적과정。
The surface of two kinds of stainless steel（1Cr18Ni9Ti）after different treatments were analysed with X-ray diffraction（XRD）.The corrosion rates of it in the fluorine boric acid cleaning agent were measured with weight loss method.At the same time,the surface corrosion topographies and variation characteristics of surface roughness of stainless steel were observed by the（scanning electron microscope） SEM and scanning probe microscopy（SPM）during soaking.The results showed that stainless steel with oxide layer formed in boiling concentrated nitric acid solution as simulated pollutant contained more iron carbides on the surface relative to untreated it.Anti-corrosion ability of the former was larger than the latter in the early stage of reaction.Meanwhile,simulated pollutant appeared more obvious intergranular corrosion morphology compare with untreated stainless steel.The surface roughness also was a decreased at first and then increased and decreased at last process.