Cyclic oxidation of high-silicon spheroidal graphite iron

被引：8

作者：

Ebel, Andre ^{[1
,2
]}

Marsan, Olivier ^{[1
]}

Lacaze, Jacques ^{[1
]}

Malard, Benoit ^{[1
]}

机构：

[1] UMR 5085 CNRS INPT UPS, Ctr Interuniv Rech & Ingn Mat CIRIMAT, 4 Allee Emile Monso,BP44362, F-31030 Toulouse, France

[2] UMR 5801 Safran CEA CNRS Univ Bordeaux 3, Lab Composites Thermostruct LCTS, 3 Allee Boetie, F-33600 Pessac, France

来源：

CORROSION SCIENCE | 2021年 / 192卷

关键词：

iron; thermal cycling; Raman spectroscopy; X-ray diffraction; oxidation; HIGH-TEMPERATURE OXIDATION; A-DEGREES-C; CAST-IRON; AIR; FAYALITE; ALLOYS;

D O I：

10.1016/j.corsci.2021.109854

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In service, automotive exhaust manifolds are submitted to rapid thermal cycling up to 700-750 degrees C. To simulate an increase in exhaust gas temperature, a high-silicon cast iron was tested for rapid thermal cycling up to 800 degrees C. In addition to the well-known duplex oxide scale, rapid cyclic oxidation promotes the formation of a columnar zone at the substrate/oxide interface that has never been reported. It is evidenced that this columnar zone proceeds from a repetitive process. Based on detailed metallographic analysis using optical observations, in-situ XRD, micro-analyses and Raman spectroscopy, a mechanism explaining the formation of this columnar zone is proposed.

引用

页数：12

共 31 条

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