CAJ | 학술논문

制备了适用于X80管线钢的高温防护多功能暂时性涂层,并对其防护机理进行了分析.该新型防护涂层在1250℃下可使X80管线钢高温表面氧化烧损降低40%以上,同时有效降低了氧化铁皮的脱除难度.EDX面扫描分析结果表明,新型防护涂层改善了氧化层的致密层结构,提高了外层致密层占氧化层总厚度的百分比,弱化了底层致密层的富硅性能.多功能暂时性涂层的研究和应用将为我国X80管线钢的生产工艺革新和产品合格率的提高提供有益的借鉴.
제비료괄용우X80관선강적고온방호다공능잠시성도층,병대기방호궤리진행료분석.해신형방호도층재1250℃하가사X80관선강고온표면양화소손강저40%이상,동시유효강저료양화철피적탈제난도.EDX면소묘분석결과표명,신형방호도층개선료양화층적치밀층결구,제고료외층치밀층점양화층총후도적백분비,약화료저층치밀층적부규성능.다공능잠시성도층적연구화응용장위아국X80관선강적생산공예혁신화산품합격솔적제고제공유익적차감.
A new temporary protection coating with multifunction for X80 pipeline steel was prepared and the protection mechanism of the coating at high temperature was studied. The results showed that the oxidation burning loss of X80 pipeline steel with the new coating was decreased by more than 40%. Meanwhile, the property of peeling scale from the steel body was improved. EDX mapping indicated that the structure of oxide scale formed on the surface of X80 pipeline steel was improved by the coating. In the new structure, the ratio of the thickness of outside compact layer to the whole layer was increased. Moreover, the silicon enriching property of the bottom compact layer was also weakened in the new structure. From the research and application of the new multifunctional temporary coating, beneficial lessons can be drawn for the technological innovation and the qualification rate improvement of the X80 pipeline steel.