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Nickel aluminide coatings were prepared by aluminizing pure nickel at 700 ℃ for 6 h. The corrosion behavior of nickel aluminide coatings was investigated under a KCl deposit environment (95 %N2 +5%O2) alone or with 15 % or 30 % water vapor at 700℃. Without water vapor, the coatings suffered slight surface and intergranular corrosion attack. With water vapor increasing to 30 %, the generation of chlorine is inhabited and reduces the “chlorine-active corrosion”. However, with 30 % water vapor, the oxidation-decomposition reaction becomes more active, so more corrosion products accumulate on the surface and the degradation of coatings was more severe.

Due to global warming, biomass fuels are gradually being used to replace fossil fuels. However, high-temperature biomass corrosion is a crucial issue affecting its future application. In this article, different factors affecting boiler performance are summarized from various studies to guide the optimization of boiler parameters in practical applications, such as corrosive components and boiler temperatures. Meanwhile, different coating formation methods and materials are summarized to provide better protection strategies. The potential coating materials for future research are also discussed. The addition of other elements, such as Ti, Mo, and W, has the potential to accelerate the formation of oxide layers during high-temperature corrosion and directly slow down the corrosion rate. Future studies should focus on these elements containing materials.

Enrollment expansion in colleague in China makes higher education transform from superior education to mass education. In the eye of society, college graduates' employability has taken the place of a diploma and become a new standard to measure the quality of university's education. This new standard requires the education model of higher education should make a new adjustment. The introduction of experiential learning can improve the employability of students, and can also be a fundamental solution to students' inadequate employability.