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Due to the harsh underground environment in coal mining, the surface of hydraulic support columns corrodes severely, resulting in significant economic losses. Therefore, a highly corrosion-resistant coatings is needed to extend the service life of the columns.

This study aims to compare the corrosion resistance of ST-Cr₃C₂-NiCr (sealed treatment Cr₃C₂-NiCr) coatings with industrially applied chromium plating. The corrosion failure mechanism of the coatings was investigated.

The results demonstrated that the ST-Cr₃C₂-NiCr coatings exhibited excellent corrosion resistance. After sealing treatment, the corrosion potential of Cr₃C₂-NiCr coatings was −0.215 V, and the corrosion current density of Cr₃C₂-NiCr coatings was lower than that of the plated parts.

ST-Cr₃C₂-NiCr coatings prepared by supersonic atmospheric plasma spraying could provide excellent corrosion resistance in the coal industry.

The low porosity and the presence of the NiCr phase were crucial factors contributing to the preferable corrosion resistance exhibited by the ST-Cr₃C₂-NiCr coatings. The corrosive process of the coatings involved layer-by-layer delamination of surface oxide film, sub-surface pitting, formation and degradation of sub-surface passive film, as well as severe block-like delamination.

This paper examines diverging views on the Chongqing model, the policy experiment led by Bo Xilai from 2007 to 2012 that was famous for its “red songs” and the campaign against organized crime. It has impressed both the supporters of socialist identity of China and the supporters of liberal identity and led to an intense debate concerning China’s path of development. This paper attempts to discuss and clarify to what extent the Chongqing model represented a genuine socialist experiment and the implications of the model for China’s future.

This research aims to find out the reasons why Chinese people prefer domestic products. The authors examine the effect of consumer ethnocentrism (CE), social norms (SNs) and national identity (NI) on willingness to buy (WTB) domestic products in two time points and test the product category differences and age group differences.

Two survey studies (n₁ = 314; n₂ = 346) were conducted in China in 2021 and 2022, respectively. The authors measured CE, SNs, NI and WTB domestic products in both studies and WTB four categories of products in study 2. Multiple hierarchical linear regression was conducted to test the hypotheses.

In study 1, the authors found that SNs and NI significantly predicted WTB domestic products, but CE did not. In study 2, the authors found that all three indicators significantly predicted WTB domestic products. CE played a significant and consistent role in different product categories, while SNs and NI had inconsistent effects. NI predicted WTB domestic products for younger people but not for older people.

This research is the first to examine CE, SNs and NI in the same study and the first to explore the role of SNs and NI in WTB domestic products in China. It promotes the understanding of CE and other related factors, increases the knowledge of Chinese consumers’ purchasing behavior and indicates the power of the situation. Practical implications are also discussed.