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• W2073995780 abstract "In the post-war period, when U. R. Evans was in semi-retirement, the leading corrosion scientist in the UK was Dr Hoar who was really leader of a triumvirate consisting of himself, Lionel Shrier and Ken Ross. These three were responsible for forming the Corrosion and Protection Association (CAPA) which in turn was a core part of the Institution of Corrosion in its early form. But what made Hoar the undoubted leader was his chairmanship of the government enquiry (1967–70) into the cost of corrosion and protection to the UK. Thomas Percy Hoar was from his student days known as Sam, allegedly after the prominent politician of the inter-war years Sir Samuel Hoare, and it remained as an affectionate nickname. He was born in 1907 at Rochester, attended Sir Joseph Williamson’s Mathematical School before going up to Sidney Sussex College, Cambridge as a scholar in 1926. He graduated in 1930 and began research with U. R. Evans (on his hockey colleague L. C. Bannister’s recommendation), who at that stage was laying the groundwork for a new science of corrosion, publishing a key paper in 1932 in which he reported corrosion rates measured as electrochemical reaction rates (i.e. current densities) for the iron–oxygen corrosion couple. Evans followed this with a programme sponsored by the International Tin Council in which he studied polarisation curves as sources of corrosion data for the first time and established the use of Tafel data derived from the linear region of potential versus log current curves as a means of deriving electrochemical corrosion rates. This led in turn to the concept of polarisation diagrams, known as Evans diagrams for many years because of the instigator; they have been thoroughly discussed in the context of coated metals in a relatively little appreciated paper by Hoar in the IMF journal of the time. During the Second World War he further enhanced his reputation with a number of studies related to passivity and stress-corrosion, including the use of sodium nitrite as an anodic inhibitor. Following the war he became an established lecturer in metallurgy and Fellow of Downing College and began to build up his research team, which over the next 20 years created a large pool of academics in many countries with expertise in corrosion science. In turn these produced a vast number of second and third generation corrosionists. If the key words were passivity, stress-corrosion and electrochemical reactions, these merely acted as springboards to studies of anodising, electropolishing, pitting, stress-corrosion cracking, and a range of corrosion-resistant metals. Whereas his earlier students went to industry (Farthing, Croom, Jacob), later students went into British academia (Wood, West, Scully, Arrowsmith) and into overseas universities (Galvele, Hurlen, Yahalom, Podesta) and government service (Rothwell). Hoar was active in the IMF from his early research days and served on many committees, becoming President during 1957–59 for which he discussed ‘The future of metal finishing’ in his Presidential address. He was awarded the Hothersall Medal in 1962 – his lecture was entitled ‘On the electrochemistry of nickel’. He received the AESF Scientific Achievement Award in 1971 and was Electrochemical Society Palladium Medallist in the USA in 1969, and, later, the first recipient of the U. R. Evans Award of the Institution of Corrosion in 1976. His recipient lectures were always devoted to apparently simple topics and were models of clarity presented with elegance. A classical review on anode reactions is a paper of this character. One of his endearing habits was to arrive for a celebrity lecture apparently being unsure of the agreed topic and then to deliver a superb ‘off-the-cuff’ lecture without notes or slides. He was a well established consultant allegedly delegating regular teaching lectures to his assistants. His cars were often mobile corrosion sites which he was asked on one occasion to park around the back of the building as it was too unsightly for the visitor’s place in the front. This writer’s first experience of him was as a PhD external examiner: he clearly had not read my thesis very thoroughly but had nevertheless managed to form a ‘positive opinion’, much to my relief. At an international level he was a founder member (and second President) of CITCE which became the International Society for Electrochemistry. This led to his becoming founding editor of Electrochimica Acta in 1959. He was a leading figure in the launch of Corrosion Science in the following years. He will probably be best remembered for being Chairman of the UK Government Committee on the Cost of Corrosion and Protection to the national economy which yielded ‘the Hoar report’ in 1971. This was set up by the Labour government but as a non-partisan activity was allowed to continue after a change of government in the 1970 General Election. Its headline was a national cost from corrosion to the nation of £1365m per annum, broken down in various ways, but its unique systematic study Dept. of Materials, Loughborough University, Loughborough LE11 3TU *Corresponding author, email d.r.gabe@lboro.ac.uk T. P. Hoar at the time of his IMF Presidency, 1958–59 B U L L E T I N" @default.
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• W2073995780 title "T. P. ‘Sam’ Hoar: Doctor corrosion" @default.
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