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Hist Metall 39 (2)
Title
The title of the publication or report
Title:
Hist Metall 39 (2)
Series
The series the publication or report is included in
Series:
Historical Metallurgy
Volume
Volume number and part
Volume:
39 (2)
Publication Type
The type of publication - report, monograph, journal article or chapter from a book
Publication Type:
Journal
Editor
The editor of the publication or report
Editor:
Justine Bayley
Sam Murphy
David W Crossley
Publisher
The publisher of the publication or report
Publisher:
Historical Metallurgy Society
Year of Publication
The year the book, article or report was published
Year of Publication:
2005
Source
Where the record has come from or which dataset it was orginally included in.
Source:
BIAB (The British & Irish Archaeological Bibliography (BIAB))
Relations
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Relations:
URI:
http://hist-met.org/
Created Date
The date the record of the pubication was first entered
Created Date:
01 Dec 2006
Please click on an Article link to go to the Article Details.
Article Title
Access Type
Author / Editor
Page
Start/End
Abstract
Revisiting the zinc composition limit of cementation brass
Brian D Newbury
Michael R Notis
Dale E Newbury
75 - 81
Report on work reproducing both traditional cementation brass production methods and the high-zinc production technique reported by Zwicker et al (1992) to explore the true limit of zinc content and how this relates to historic brass compositions. Metallography and advanced scanning electron X-ray composition mapping showed that it is possible to produce brasses with over 40wt% zinc by cementation. However, to achieve these compositions the process must be performed by very small quantities and at very short furnace times, which is contrary to historical written accounts of the cementation brass production techniques. It is the opinion of the authors that while it is possible to produce a >40wt% brass via cementation, the commonly reported zinc content limit of ~30wt% is valid for historic artefacts.
A tale of two bridges: the Iron Bridge and Coalport Bridge, Shropshire
Andrea Parsons
Shelley White
82 - 95
The Iron Bridge, built in 1779, and Coalport Bridge, built in timber in 1780, rebuilt in 1800 and again, in iron, in 1818, were surveyed from 1999 to 2001 and 2001 to 2004 respectively. The Iron Bridge proved to be a palimpsest of minor and major repairs. The Coalport Bridge survey highlighted the apparent lack of alterations to the ironwork of 1818, whilst supporting the documentary evidence for the three major phases of construction in the bridge's history. Despite this, both structures retained some similar major component parts albeit comprising individual methods of construction. Evidence for both bridge surveys pointed to abundances in the understanding of bridge construction from the eighteenth to the nineteenth century.
The effects of plasma treatment on the microstructure of metals
Paul T Craddock
Janet Lang
106 - 119
The report questions the assumption that plasma treatment of corroding metals has little significant effect on the microstructure of the metals. It is argued that, although under the less extreme conditions now adopted in some laboratories gross phase changes may not happen, more subtle changes are very likely to be taking place, as exemplified by a series of test pieces of iron and silver metallographically examined before and after plasma treatment. The tests are described and some of the changes in structure that are likely to occur in metals in the temperature range 100--300ºC are outlined. The authors contend that these changes are significant and are often the result of deliberate heat treatments during the original manufacture of the artefacts. Once they have been modified by subsequent heating much of the fabrication history will have been lost. It is also argued that other structural changes occur over long periods of time and these are also vulnerable to quite modest heating, thereby compromising future authentication examinations.
Abstracts
127 - 132
Abstracts of various journal articles and monographs on historical metallurgy.