These Proceedings represent the metallurgical engineering and materials science research presented at the 61st Annual Conference of Metallurgists. The collection themed ‘The Pathway to Net-Zero’ presents findings on a wide range of topics including: Processing of Critical Materials Towards Sustainable Circularity: Mining to Materials Deep Decarbonization Pathways for Pyrometallurgical Processes: Opportunities & Challenges Energy and Environmental Materials Light Metals for the Transportation Industry Advances in Materials Manufacturing VI – Existing and Emerging Materials Electrochemical Degradation of Multi-component Materials

SCFs are currently the subjects of intense research and commercial interest. Applications such as the RESS (rapid expansion of supercritical fluid solutions) process are part of standard industrial practice. In view of their ever-growing importance in the polymer industry there is a need to fully comprehend how supercritical fluids interrelate with polymeric materials to realise the potential that can be gained from their use. The authors review the basic principles of SCFs and their application within the polymer industry: characteristics and properties, extraction of unwanted residual products, polymerisation solvents, and polymer impregnation. Processing applications such as plasticisation, foaming and blending are also considered. There is discussion of the potential within the polymer recycling industry for use of SCFs as cleaning agents or within supercritical oxidation processes. Around 400 references with abstracts from recent global literature accompany this review, sourced from the Polymer Library, to facilitate further reading. A subject index and a company index are included.

Natural/Biofiber composites are emerging as a viable alternative to glass fiber composites, particularly in automotive, packaging, building, and consumer product industries, and becoming one of the fastest growing additives for thermoplastics. Natural Fibers, Biopolymers, and Biocomposites provides a clear understanding of the present state

Many books have been written on the evils of commercialism in college sport, and the hypocrisy of payments to athletes from alumni and other sources outside the university. Almost no attention, however, has been given to the way that the National Collegiate Athletic Association has embraced professionalism through its athletic scholarship policy. Because of this gap in the historical record, the NCAA is often cast as an embattled defender of amateurism, rather than as the architect of a nationwide money-laundering scheme. Sack and Staurowsky show that the NCAA formally abandoned amateurism in the 1950s and passed rules in subsequent years that literally transformed scholarship athletes into university employees. In addition, by purposefully fashioning an amateur mythology to mask the reality of this employer-employee relationship, the NCAA has done a disservice to student-athletes and to higher education. A major subtheme is that women, such as those who created the Association for Intercollegiate Athletics for Women (AIAW), opposed this hypocrisy, but lacked the power to sustain an alternative model. After tracing the evolution of college athletes into professional entertainers, and the harmful effects it has caused, the authors propose an alternative approach that places college sport on a firm educational foundation and defend the rights of both male and female college athletes. This is a provocative analysis for anyone interested in college sports in America and its subversion of traditional educational and amateur principles.