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By adding a Ce salt and an Nd salt to an anodizing electrolyte, modified anodic films are obtained on aluminum surfaces. This paper aims to study the effects of rare‐earth elements on the corrosion resistance of the anode film.

The crystalline film was studied by X‐ray diffraction. The methods of scanning electron microscope, energy dispersive X‐ray analysis, electrochemical polarization, and electrochemical impedance spectroscopy (EIS) were used to characterize the properties of the films.

After rare‐earth element modification, the pores of the porous layer were very evidently smaller, the anodic film was more compact, and the thickness and hardness of the films had increased. The corrosion resistance of the anodic films modified with rare‐earth elements clearly was improved in neutral, acidic, and basic NaCl solutions. Ce showed a better effect than Nd in increasing the corrosion resistance of the films, and the film modified with Ce+Nd showed the highest corrosion resistance. EIS analysis showed that the impedances of both the barrier layer and porous layer of the anodic films increased after modification with the rare‐earth elements, indicating that the anodizing process was affected by the presence of the rare‐earth elements.

The results presented in this paper offer a foundation for further research and application of rare‐earth elements in aluminum anodic oxide films.

China holds a global monopoly of up to 97 percent for rare earth elements (REEs), which are indispensable for all kinds of twenty-first century high-tech applications. Since China has disrupted its exports and started discriminating between domestic and foreign demand, REEs have become a geostrategic resource. In March 2012, Japan, the USA and the European Union jointly filed a World Trade Organization dispute settlement case against China. The purpose of this paper is to elaborate why China implemented export quotas and tariffs on REEs and how the state is engaged in this sector domestically and abroad.

The analysis frames China as a “competition state” and connects domestic with foreign economic policy on REEs. It uses data from Chinese official documents and non-Chinese sources.

Better government control aims to consolidate the sector and lay the foundation for three other goals, namely: the establishment of integrated and innovative Chinese corporations that compete globally; the provision of incentives to attract high-tech foreign direct investment to China; and better environmental protection. China wants to climb the next step of the technological ladder to gain global economic leadership.

Global environmental protection in mining is eased. However, non-Chinese market players can only take advantage of new business opportunities when the prices remain high. Since REEs are of strategic importance, rising political interference and raw materials diplomacy will continue to distort markets and price building.

The paper connects domestic reregulation of China's rare earth sector with foreign policy goals (or “going in” and “going out”) using the competition state approach.

Rare earths are essential materials for many high-tech industries critical to both economic development and national defense. China, the world's dominant supplier of rare earths, has recently been imposing stricter controls over its production and export. The purpose of this paper is to examine the domestic roots of the changes in China's rare earth industry production and exports in its three-decade rise to the current global monopoly.

This paper adopts the historical institutionalism approach to analyze the trajectory of industry and trade development. The author analyzes data collected from government whitepapers and reputed scholarly and news sources.

This paper argues that the Chinese rare earth industry has gone through three periods of development, in which the state attempted to control the market and industry through reformulating rules and institutions to achieve state goals. Domestic state institutions, combined with macroeconomic environment and state governance strategy shaped the three-decade experience of rare earth industry and trade development in China.

This paper builds on existing findings about Chinese state regulations to provide a novel analytical framework to analyze the role of the state in industry and trade development in the rare earth industry. The focus on a single strategic industry seldom studied in the current literature also provides ample empirical value to further scholarly understanding about this industry.

The purpose of the paper is to study the tribological performance of an oil soluble mixed rare‐earth alkylsalicylate (REA) as lubrication additive in VG 26 white oil, and to estimate the action mechanism.

The organo rare‐earth compound is synthesized, and added in base oil with different concentrations. The tribological performances of the organo rare‐earth compound as a lubrication additive in VG 26 white oil and its anti‐wear properties are evaluated with a four‐ball friction and wear tester. The wear scar is analyzed with X‐ray photoelectron spectroscopy (XPS).

The novel compound exhibits excellent anti‐wear, load‐carrying and friction‐reducing capacities in base stock. The analytical results of XPS indicate that the excellent performance of REA can be attributed to the formation of a boundary lubricating film mainly composed of alkylsalicylic acid, rare earth oxide, and complexes of rare earth metals, which is formed on a rubbed surface when lubricated by oil containing the REA additive.

Their antioxidant and anticorrosion properties are not estimated.

One useful AW and EP lubricating oil additive is synthesized, and maybe it is the potential industrial applied lubricating oil additive.

This paper provides a study of organo rare‐earth compounds as lubrication additives.