High temperature corrosion tests in 75%Na2SO4-25%. NaCl molten salt have been conducted on waspalloy specimens plasma sprayed with Co-Cr-B-Si, Ni-Cr-B-Si-hCr3C2, X-40, X-40 + TiC and Ni/Al + Al2O3 coatings, test coupons were exposed isothermally at 750℃up to 200 h. After the corrosion tests, each sample was examined by OM, SEM and EMPA. It was found that X-40, X-40 + TiC and Ni/Al + Al2O3 were violently corroded by the molten salt due to cracking and spalling of the coatings, whereas Co-Cr-B-Si and Ni-Cr-B-Si + Cr3C2 exhibited superior corrosion resistance, which were thought to be related to the formation of chromium and silicon oxide film. A possible corrosion mechanism had been proposed and it is suggested that the excellent corrosion resistance and high hot-hardness of the two B-Si containing coatings may be of significance for applications in petroleum refining industry as

The physico-chemical behavior of rare earth elements in low sulphur 16Mn steel and their ability to enhance the corrosion resistance of the steel in sea water studied in this paper. The results indicate that Ce and La in 16Mn steel all have the abilities such as deoxidation, desulphidation, refining grains and cleaning grain boundaries and matrix etc. The anodic and cathodic polarization curves show that the rare earth elements added in 16Mn steel enhance the corrosion resistance of the steel in sea water

10.1 Corrosion 10.2 Degradation of polymers

To ensure good combustion in diesel engines and reduce wear and corrosion in this type of engine it may be necessary to remove certain impurities from fuel and lubricating oils. These include ash, various salts and water present in fuel oil and carbonaceous matter, metals, acids and water present in used lubricating oil. carbonaceous

《材料失效分析 Materials Failure Analysis》课程教学资源（参考书籍）METALLIC MATERIALS Physical, Mechanical, and Corrosion Properties

复旦大学：《材料失效分析 Materials Failure Analysis》课程教学资源（教学案例）43. Pitting corrosion on 316L pipes in terephthalic Acid（TA）dryer

复旦大学：《材料失效分析 Materials Failure Analysis》课程教学资源（教学案例）18. Corrosion Evaluation of One Dry Desulfurization Equipment-Circulating Fluidized Bed Boiler

复旦大学：《材料失效分析 Materials Failure Analysis》课程教学资源（教学案例）05. failure analysis on abnormal wall thinning of heat-transfer titanium tubes of condensers in nuclear power plant part ii_erosion and cavitation corrosion

4.1 Footing depth and spacing 4.2 Displaced soil effects 4.3 Net versus gross pressure: design soil pressures 4.4 Erosion problems for structures adjacent to flowing water 4.5 Corrosion protection 4.6 Water table fluctuation 4.7 Foundations in sand and silt deposits 4.8 Foundations on loess and other collapsible soil 4.9 Foundations on unsaturated soils subjected to volume change with change in water content

3.1 Properties and Environmental Varables 3.2 Mechnical properties 3.3 ELECTROCHEMISTRY￾Electrolysis, Corrosion, and its Prevention