Oliver Lewis

Conversion coatings for zinc electrodeposits from modified molybdate solutions

Abstract Among the alternatives which have been considered as potential replacements for chromate conversion coatings on zinc electrodeposits, molybdates have been the subject of extensive investigation. Whilst forming coatings of similar appearance to chromates, they are not thought to pose the same risks to human health and the environment. However, the corrosion protection of simple molybdates has been found to be inferior to chromates in chloride environments. The present research has sought to improve this aspect of the coatings by adding oxidising agents to the formulations. The composition and morphology of the coatings has been investigated, while the corrosion resistance was studied by salt spray corrosion testing and linear polarisation resistance. Calibrated line scans using the scanning vibrating electrode technique revealed that the addition of sodium persulphate to the molybdate solution reduced the corrosion current during the initial stage of immersion compared to the simple molybdate.

Developing employability in engineering education: a systematic review of the literature

ABSTRACT In this systematic review of the research literature on engineering employability, curricular and pedagogical arrangements that prepare graduates for work in the twenty-first century were identified. The research question guiding the review was: Which curricular and pedagogical arrangements promote engineering students’ employability? The particular focus of the study was on how authors prioritised engineering knowledge and professional skills. The review drew on a theoretical framework that differentiated between engineering knowledge and professional skills to explain how employability could be included in engineering programmes. Data was obtained from research studies over the period 2007–2017. We found an interdependent relationship between engineering knowledge and professional skills that enabled engineering graduates to attain employability. The com of engineering problems require students to master engineering knowledge, while the ability to work with others across contexts requires professional skills. Both are necessary for deep understanding of engineering principles and a focus on real world problems.

Organic coating environment and health issues in the automotive industry

Abstract This IMF one-day symposium was held at the Birmingham Medical Institute on 14 February 2006. The 50 delegates included representatives from the surface finishing and automotive industries and academia. In addition to a full programme of presentations, a lunchtime table-top exhibition gave delegates the opportunity to meet with suppliers and a regulatory body, in the form of the HSE.