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Duplex stainless steels are excellent materials for industrial applications and their use has increased in the oil, chemical, petroleum (offshore), and electric power industries. Pitting resistance equivalent (PRE) is the first parameter used to characterise the pitting and crevice corrosion resistance. Nevertheless, there are other aspects to be considered, such as the precise values of the PRE in the α and γ phases and the selective corrosion processes that may occur at grain boundaries. This paper indicates that α/γ and α/σ interfaces are preferential sites for the nucleation and growth of pits and for consequent selective corrosion, with increasing tendency in the ferritic phase. In addition, the selective dissolution potential is more reactive (and therefore, is of greater significance) than the pitting potential.

Intimate partner violence (IPV) perpetrated by women is an infrequently discussed topic. The lack of knowledge about female perpetrators of IPV results institutionally in insufficient prevention training and discursively in inadequate appreciation of the women's realm. Thus, this chapter will examine the debates on female IPV in the area of tension between violence prevalence research and the gender-based approach in social sciences and shows that female IPV as a women's reality of life is not limited to resistance violence and is far more complex. By collecting data from 58 female IPV cases, the author develops a typology of female offenders of IPV. Case files documented by the counsellors at violenTia, a German counselling specialist working with women perpetrating violence in their partnership, were examined. The counsellors' notes in the case files were analysed by methods of the empirically grounded type construction, that is the notes were thematically coded and dimensionalised and the case files were grouped according to empirical regularities, followed by an analysis of the contexts of meaning, the type construction and the characterisation of the types constructed. As per the findings, four types (1–4) and one subtype (3′) of female IPV were developed. The main dimensions of the typology are the structure of violence (asymmetrical/symmetrical), the pattern of violence (systematic/situational), the agency of violence (who has the ability and capacity to use violence) and attribution of meaning to violence (for example, explanations and legitimisation). The author concludes that types of female offenders show strong external heterogeneity. A finding which is important for appropriate treatment settings. Female perpetrators often lack the words to describe violent behaviour and repeatedly have unprocessed trauma. Accordingly, to understand and prevent IPV, it is necessary to widen perspectives on female offenders without reducing them to traditional gender stereotypes.

Amorphous and nanocrystalline FeCo‐based alloys present excellent soft magnetic properties and high Curie T_C temperatures. At ambient temperatures, these alloys are subject to electrochemical corrosion, which causes degradation of their magnetic properties. This paper seeks to characterize the microstructure and evaluate the corrosion resistance of Fe₃₆Co₃₆Zr₇Si₁₀B₁₁ and Fe_33.5Co_33.5Nb₇Si₁₅B₁₁ alloys.

These alloys are solidified at different cooling rates.

The corrosion resistance, which is found to depend on the microstructure, decreases as the cooling rate increases in the interval of 50‐150°C.

Builds on existing knowledge of the microstructure and corrosion resistance of Fe₃₆Co₃₆Zr₇Si₁₀B₁₁ and Fe_33.5Co_33.5Nb₇Si₁₅B₁₁ alloys.

Woman's use of violence has been mainly conceptualised through woman's experiences of victimization. However, more recent perspectives emphasise the female agency, responsibility and meaning of woman's violence. Listening to the voices of victims of women's abuse is a powerful way of learning about woman's use of violence and its impact on the victims. We conducted focus groups with 41 men from four countries who experienced female-perpetrated abuse. Four major types of abuse were identified: psychological abuse and coercive control followed by physical violence and sexual violence. Psychological abuse ranged from verbal assaults and gaslighting to provoking physical altercations and reporting false accusations. Patterns of control included deliberate isolation, threatening false accusations and financial domination. Men reported that women initiated physical violence for various reasons, including jealousy and rage. Some women used different objects that could seriously hurt, including knife, while others slapped, bit, punched or kicked. Several men reported female-perpetrated sexual abuse. Woman's use of violence in the intimate relationship should be treated seriously. A more gender-inclusive approach to partner abuse is required that can focus on a better prevention of abuse for all victims.

Violence continues to escalate globally, despite efforts that are being made to curb it. Even though men constitute the majority of the perpetrators of violence, it is indisputable that some of the violence is also perpetrated by women. Qualitative in nature, this chapter is located within the interpretive research approach. Arguments made in this chapter are grounded in a socialist feminism approach, which foregrounds the importance of class and gender. Thus, this chapter drew from desk review and an empirical study conducted in Lesotho, utilising the Female Correctional Institution in Lesotho as the study site. The chapter explores women's perpetration of varied forms of violence. It aims at shedding more light on the drivers of violence perpetrated by women. The study unearthed that women's violence is mainly driven by poverty, gender inequalities, lack of social capital and self-defence. The author argues that future theoretical engagements and policy responses to women's violence could benefit from empirical evidence, which critically engages feminist approaches. The chapter is envisaged to contribute to the current debates on feminist approaches to women's violence.

The purpose of this paper is to reveal the effect of microstructure on the corrosion behavior of CoCrNi alloy in 3.5 Wt.% NaCl solution.

The as-cast CoCrNi alloy was prepared by arc melting, and the cold-rolled and annealed alloys were prepared by processing the as-cast alloy.

The experimental results showed that a protective passivation film was formed on the surfaces of these CoCrNi MEA, and the stability and compactness of alloys increased in the sequence of cold-rolled, as-cast and annealed CoCrNi alloys. The annealed CoCrNi alloys had the best pitting resistance.

This study proposes the effect of the microstructure of CoCrNi alloy on corrosion resistance.

This paper aims to focus on the influences that lead individuals to create and continue with operating informal business ventures in Peru. It seeks to empirically identify the factors that are significant in forming the intentions of entrepreneurs to begin or continue with their informal businesses.

The theory of planned behaviour (TPB) is applied using data gathered from interviews with informal domestic gas cylinder sellers using a formally conducted survey. Using structural equation modelling, the constructs that influence the entrepreneurial intentions of informal gas sellers in Lima, Peru, are determined.

Of the three TPB constructs, attitude was found to be most significant, reflecting a belief of informality’s benefits, social norm was also significant, revealing the importance of the opinions of family, whereas perceived behavioural control was found not to be significant.

These results provide confirmation of a policy approach developed to address the high rates of business informality while maintaining safety in a highly regulated industry segment. By providing insight into factors beyond economic drivers, the study reveals that an understanding of the prevailing social environment is important for the development of policies dealing with informal entrepreneurship.

Thin coatings are of great importance to minimize corrosion attack of steel in different environments. A review of recent work on electrodeposition and corrosion performance of Zn-Ni-based alloys for sacrificial corrosion protection of ferrous substrates is presented. The purpose of this study is to provide a systematic comparison of the corrosion resistances of Zn-Ni alloy coatings. The review contains key and outstanding comparisons of references for the period from 2007 to 2017. Binary and ternary Zn-Ni-based alloys were compared and contrasted to provide a good knowledge basis for selection of best coating system to steel substrates.

This article is a review article.

Zn-Ni-(X) alloys show great potential for replacing Cd metal in corrosion protection of steel substrates.

The research on plating of binary Zn-Ni alloys from aqueous electrolytes is now well advanced and these alloys show improved corrosion resistance compared to pure Zn. Pulse plated and compositionally modulated multilayer Zn-Ni alloy coatings showed enhanced corrosion properties compared to direct plated Zn-Ni coatings of similar composition.

The work on electrodeposition of Zn-Ni based alloys from ionic liquids is still scarce, yet these liquids show great promise in improving corrosion resistance and reducing coating thickness when compared to aqueous electrolytes. Advanced plating techniques in ionic liquids such as electromagnetic, compositionally modulated multilayer, pulse plating, ternary alloys and composites should be considered as these electrolytes avoid water chemistry and associated defects.

The purpose of this study was to investigate the pitting resistance and assess the critical pitting temperature (CPT) of a super martensitic stainless steel, 00Cr13Ni5Mo2, made in China, considering especially the difference in the pitting corrosion resistance between the domestic super martensitic stainless steel and an imported one.

Potentiodynamic sweep tests were applied to investigate the effects of four NaCl concentrations (weight per cent) of 1, 3.5, 9 and 17, and four testing temperatures of 30, 50, 75 and 90°C on the pitting resistance of the domestic super martensitic stainless steel in the presence of CO₂. Potentiostatic sweep tests were utilized to determine the CPT. Furthermore, chemical immersion exposures, implemented according to the appropriate standard were used to evaluate the difference in the pitting corrosion resistance between the domestic super martensitic stainless steel and an imported one. In addition, the morphology of pits was analyzed using a scanning electron microscope.

The pitting potential of the domestic super martensitic stainless steel decreased with an increase in NaCl concentration and temperature in the presence of CO₂. The CPT of the domestic super martensitic stainless steel measured by potentiostatic polarization was 41.16°C. Two types of typical corrosion pits, closed pits formed at 35°C and open pits formed at 50°C, were observed. Furthermore, compared to the super martensitic stainless steel made in Japan, the domestic one was better in terms of pitting potential, corrosion rate and the density of the pits, but worse in terms of the depth of the pits, which may result in a risk of corrosion perforation of tubing and casings.

The paper highlights that chloride ions, temperature and the presence of CO₂ play an important role on the pitting resistance of super martensitic stainless steel.

This paper aims to focus on an assessment of the electrochemical corrosion performance of bulk NC copper in a variety of corrosion environments.

The electrochemical corrosion behavior of bulk nanocrystalline (NC) copper prepared by inert gas condensation and in situ warm compress technique was studied by using potentiodynamic polarization and electrochemical impedance spectroscopy tests in de-aerated 0.1 M NaOH solution.

NC copper exhibited a typical active-passive-transpassive behavior with the formation of duplex passive films, which was qualitatively similar to coarse-grain (CG) copper. Although a compact passive film formed on NC copper surface, the corrosion resistance of NC copper was lower in comparison with CG copper. The increase in corrosion rate for NC copper was mainly attributed to the high activity of surface atoms and intergranular atoms. These atoms led to an enhancement of passive ability and an increase of dissolution rate of passive film in oxygen-deficiency solution. For NC copper, the corrosion resistance decreased as grain size increased in NC range.

The difference in corrosion resistance between bulk NC copper and its CG counterpart is dependent upon the corrosion solution. In a previous work, the potentiodynamic polarization tests revealed that NC copper bulks (grain size 48, 68, 92 nm) had identical corrosion resistance to CG copper bulk in naturally aerated 0.1 M NaOH solution. The results might be related to the dissolved oxygen in the medium.