Adhesion 14 by W. J. Harvey, A. E. Vardy (auth.), K. W. Allen (eds.)

By W. J. Harvey, A. E. Vardy (auth.), K. W. Allen (eds.)

As curiosity within the entire technological know-how and expertise of adhesion and adhesives grows, so do the conferences desirous about it proliferate. within the mild of this, it's pleasurable that this, the oldest standard assembly within the box, continues its place via attracting either audio system and viewers of such excessive common from the world over yr after yr; additional, that we're enabled to arrive a much wider viewers during the ebook of the papers provided on the convention during this sequence of volumes. This current quantity, quantity 14, differs from its predecessors by means of the addition of 2 additional goods. to start with, 1989 marked the twenty-fifth anniversary of the Adhesion Society of Japan. As a part of the celebrations, the Society prepared a venture to Europe which culminated in a unique Anglo-Japanese Symposium on 21 April on the urban college, London. we're lucky in having the ability to comprise of the papers provided through our jap viewers. Secondly, on Christmas Day,just because the ultimate paintings in this quantity was once being accomplished, William C. ('Bill') Wake unfortunately died. we've got integrated an appreciation of his contribution either to those meetings and to the area of adhesion in most cases. eventually, may possibly I once more show my due to all those that have made attainable the creation of this quantity. they're a long way too quite a few to say separately, together with the authors, their secretaries, a variety of participants of the workers of the collage, and our publishers; to all of them, 'Thank you very much'.

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Energy, o 0_0-- __ _ (a) o .... '" 0' ",0 "S••c -1 o (b) -1 -5 -4 -3 -2 Pee. rate, Ig V (mms 1 ) o -1 FIG 2. ,m CLA and (b) smooth surfaces of PMMA. Dwell times are indicated; the ambient temperature was 23· C. , Pee. energy, yp (Jm 2 ) 2 - -. O~ 1 FIG 3. ( _ ______ ~ _________ 10 ~ ______ ~~ ______- L______ 100 1000 10,000 Dwell time (sec) ~ 100,000 Comparison of peel energies with dwell time for 2% peroxide NR against smooth ) or roughened (---) PMMA surfaces. Peel rates (mms- I ) are indicated.

On this basis the peak in the phosphorous signal corresponds to a depth of approximately 3 nm beiow the surface. In contrast, the chromium concentration attains a maximum 6 nm from the outer surface ". After the subsurface peaks in concentration the levels of the two elements decrease with increaSing depth below the outer surface. The incorporation of fluorine throughout the film is also evident but again shows a slight enrichment at the coating-air and coating-metal inte"rfaces . Analysis of the aluminium and aluminium oxide signals [Figure 3] indicates the presence of both species with the aluminium concentration increasing towards the f i lm-metal interface.

R. S. Crompton Alcan International Limited, Southam Road, Banbury, Oxon OX16 7SP INTRODUCTION The surface treatment of aluminium alloys is essential to the production of durable products. A range of surface modifications are commonly employed: anodising, roller coating and chemical conversion systems in both rinse and no-rinse forms. These surface treatments have been extensively used to provide long term adhesion with lacquers, paints and adhesives. The continued development of these surface treatments has generally been conducted by relating chemical analyses of the surface films to the environmental durability of the coating.

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