Electrochemical impedance spectroscopy (EIS) is a well established technique for evaluating the c... more Electrochemical impedance spectroscopy (EIS) is a well established technique for evaluating the corrosion preventive properties of protective coatings. National Museum of Australia (NMA) staff have used this technique in the past to evaluate and rank the corrosion performance of a number of commercial waxy coatings in routine conservation use. This testing procedure is relatively simple and gives quantitative snapshot data about the performance of protective coatings, allowing them to be ranked objectively. The EIS test cell presently available is suitable for testing relatively hard, thick coatings. It cannot be used in the investigation of thin, delicate and easy-to-break films such as those formed by engine oil. The objective of this investigation was to fabricate an electrode suitable for testing thin oily films using conventional EIS test cells. We desired an EIS method that could be used for rapidly testing commercial engine oils and ranking their performance. Such a test prot...
Nous avons recherché la capacité de cinq couches de cire minérale commerciale à protéger à long t... more Nous avons recherché la capacité de cinq couches de cire minérale commerciale à protéger à long terme les sculptures bronze en de plein air. Nous avons employé la spectroscopie d'impédance électrochimique (SIE) en fonction du temps d'immersion dans une solution neutre et ...
Nous avons étudié trois cires commerciales utilisées comme couches de protection pour des sculptu... more Nous avons étudié trois cires commerciales utilisées comme couches de protection pour des sculptures en bronze. Les bronzes ont été artificiellement patinés selon trois méthodes différentes. Nous avons employer la spectroscopie d'impedance électro-chimique pour ...
In terms of volume of production, aluminum is the world's leading nonferrous metal. Because of it... more In terms of volume of production, aluminum is the world's leading nonferrous metal. Because of its lightness and unique physical and chemical properties, its suitability for the construction of aircraft was recognized early this century. With the development of aluminum and its alloys as a construction material, the need arose for stable and resistant surface finishes. Surface finishing techniques developed rapidly in both Europe and the US. Today, several important classes of finishes are used. The Australian War Memorial (AWM) has an extensive collection of aluminum aircraft, which illustrate the development of aluminum alloys as structural materials and the associated coating technologies, especially oxide conversion coatings. In museums, it has been observed that these finishes have, to a large extent, been ignored, to the detriment of objects, their history, and conservation in general. These coatings can offer important historical and technical information. As intrinsic parts of the object, every effort should be made to devise conservation strategies to retain them. Further, it is only through an understanding of the construction of an object and its deterioration that appropriate treatments can be developed. Methods of categorization and analysis developed and used at the AWM are discussed, along with the reproduction of various coatings from the original formulations, conservation strategies, and a discussion of the relevance of surface coatings studies to the museum. Author Abstract David Hallam Chris Adams
Nous avons étudié trois cires commerciales utilisées comme couches de protection pour des sculptu... more Nous avons étudié trois cires commerciales utilisées comme couches de protection pour des sculptures en bronze. Les bronzes ont été artificiellement patinés selon trois méthodes différentes. Nous avons employer la spectroscopie d'impedance électro-chimique pour ...
Nous avons recherché la capacité de cinq couches de cire minérale commerciale à protéger à long t... more Nous avons recherché la capacité de cinq couches de cire minérale commerciale à protéger à long terme les sculptures bronze en de plein air. Nous avons employé la spectroscopie d'impédance électrochimique (SIE) en fonction du temps d'immersion dans une solution neutre et ...
Close Document Image Close Document Printer Image Print This Document! Conservation Information N... more Close Document Image Close Document Printer Image Print This Document! Conservation Information Network (BCIN). Author: Hallam, David Title Article/Chapter: "Conservation notes" Title of Source: ICCM bulletin AATA Number ...
Close Document Image Close Document Printer Image Print This Document! Conservation Information N... more Close Document Image Close Document Printer Image Print This Document! Conservation Information Network (BCIN). Author: Hallam, David;Bailey, George T. Title Article/Chapter: "Corrosion inhibitors for aluminium" Title of ...
Close Document Image Close Document Printer Image Print This Document! Conservation Information N... more Close Document Image Close Document Printer Image Print This Document! Conservation Information Network (BCIN). Editor: Ashurst, John; Hallam, David Title of Source: Metal 04 : proceedings of the international conference ...
Electrochemical impedance spectroscopy (EIS) is a well established technique for evaluating the c... more Electrochemical impedance spectroscopy (EIS) is a well established technique for evaluating the corrosion preventive properties of protective coatings. National Museum of Australia (NMA) staff have used this technique in the past to evaluate and rank the corrosion performance of a number of commercial waxy coatings in routine conservation use. This testing procedure is relatively simple and gives quantitative snapshot data about the performance of protective coatings, allowing them to be ranked objectively. The EIS test cell presently available is suitable for testing relatively hard, thick coatings. It cannot be used in the investigation of thin, delicate and easy-to-break films such as those formed by engine oil. The objective of this investigation was to fabricate an electrode suitable for testing thin oily films using conventional EIS test cells. We desired an EIS method that could be used for rapidly testing commercial engine oils and ranking their performance. Such a test prot...
Nous avons recherché la capacité de cinq couches de cire minérale commerciale à protéger à long t... more Nous avons recherché la capacité de cinq couches de cire minérale commerciale à protéger à long terme les sculptures bronze en de plein air. Nous avons employé la spectroscopie d'impédance électrochimique (SIE) en fonction du temps d'immersion dans une solution neutre et ...
Nous avons étudié trois cires commerciales utilisées comme couches de protection pour des sculptu... more Nous avons étudié trois cires commerciales utilisées comme couches de protection pour des sculptures en bronze. Les bronzes ont été artificiellement patinés selon trois méthodes différentes. Nous avons employer la spectroscopie d'impedance électro-chimique pour ...
In terms of volume of production, aluminum is the world's leading nonferrous metal. Because of it... more In terms of volume of production, aluminum is the world's leading nonferrous metal. Because of its lightness and unique physical and chemical properties, its suitability for the construction of aircraft was recognized early this century. With the development of aluminum and its alloys as a construction material, the need arose for stable and resistant surface finishes. Surface finishing techniques developed rapidly in both Europe and the US. Today, several important classes of finishes are used. The Australian War Memorial (AWM) has an extensive collection of aluminum aircraft, which illustrate the development of aluminum alloys as structural materials and the associated coating technologies, especially oxide conversion coatings. In museums, it has been observed that these finishes have, to a large extent, been ignored, to the detriment of objects, their history, and conservation in general. These coatings can offer important historical and technical information. As intrinsic parts of the object, every effort should be made to devise conservation strategies to retain them. Further, it is only through an understanding of the construction of an object and its deterioration that appropriate treatments can be developed. Methods of categorization and analysis developed and used at the AWM are discussed, along with the reproduction of various coatings from the original formulations, conservation strategies, and a discussion of the relevance of surface coatings studies to the museum. Author Abstract David Hallam Chris Adams
Nous avons étudié trois cires commerciales utilisées comme couches de protection pour des sculptu... more Nous avons étudié trois cires commerciales utilisées comme couches de protection pour des sculptures en bronze. Les bronzes ont été artificiellement patinés selon trois méthodes différentes. Nous avons employer la spectroscopie d'impedance électro-chimique pour ...
Nous avons recherché la capacité de cinq couches de cire minérale commerciale à protéger à long t... more Nous avons recherché la capacité de cinq couches de cire minérale commerciale à protéger à long terme les sculptures bronze en de plein air. Nous avons employé la spectroscopie d'impédance électrochimique (SIE) en fonction du temps d'immersion dans une solution neutre et ...
Close Document Image Close Document Printer Image Print This Document! Conservation Information N... more Close Document Image Close Document Printer Image Print This Document! Conservation Information Network (BCIN). Author: Hallam, David Title Article/Chapter: "Conservation notes" Title of Source: ICCM bulletin AATA Number ...
Close Document Image Close Document Printer Image Print This Document! Conservation Information N... more Close Document Image Close Document Printer Image Print This Document! Conservation Information Network (BCIN). Author: Hallam, David;Bailey, George T. Title Article/Chapter: "Corrosion inhibitors for aluminium" Title of ...
Close Document Image Close Document Printer Image Print This Document! Conservation Information N... more Close Document Image Close Document Printer Image Print This Document! Conservation Information Network (BCIN). Editor: Ashurst, John; Hallam, David Title of Source: Metal 04 : proceedings of the international conference ...
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David Hallam Chris Adams
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David Hallam Chris Adams