scholarly journals Mechanisms of Li Leaching from a LiCO3 Based Primer / Topcoat Paint System

2021 ◽  
Vol 27 (S1) ◽  
pp. 3054-3056
Author(s):  
Alexander Glenn ◽  
Peter Visser ◽  
Tony Hughes ◽  
Shyama Ranade ◽  
Jamie Laird ◽  
...  
Keyword(s):  
Paint System

Impact of plumb location on the determination accuracy of chimney heeling by photographic method

2017 ◽  
Vol 919 (1) ◽  
pp. 55-59
Author(s):  
O.V. Raskatkina
Keyword(s):  
Image Processing ◽  
Experimental Research ◽  
Optimal Location ◽  
Paint System ◽  
Photographic Method ◽  
Round Shape ◽  
Straight Line ◽  
Left And Right

There is a method of using the corded plumb as vertical reference straight line, located in front of the objective of a digital photocamera in the article. When we take picture of the object under study, there will be this straight line in the photo, from which we can carry out all necessary measurements in the Paint system with the following conversion them into metric system. All possible variants of location of the reference straight line relative to it axis are considered by the example of the construction of the tower round shape and it is shown a method of heeling calculation by image processing results. Experimental research to determine the degree of influence of plumb location in the photo relative to it axe on the accuracy of the heeling determination was carried out by shooting the brick chimney with the 30 metres height when the plumb is located on the chimney axis and on different distance from the left and right of the axis. It is set in the result that the plumb location has influence on the accuracy of heeling determination. The optimal location is on the centre of the top section of the chimney and there is shown the method of accounting corrections due to inaccurate location.

Painting for the Protection of Outdoor Metal Structures

1954 ◽  
Vol 1 (7) ◽  
pp. 239-242
Author(s):  
J.F. Stanners
Keyword(s):  
Paint System ◽  
Metal Structures ◽  
Paint Formulation

In this second and concluding part of his article, Mr. Stanners discusses the choice of paints, paint formulation, the paint system, and, finally, when and how to paint. The first part of the article ‘Preparing to Paint’ appeared in our August issue.

SEM Backscattered-Electron Images of Paint Cross Sections as Information Source for the Presence of the Lead White Pigment and Lead-Related Degradation and Migration Phenomena in Oil Paintings

2011 ◽  
Vol 17 (5) ◽  
pp. 696-701 ◽  
Author(s):  
Katrien Keune ◽  
Annelies van Loon ◽  
Jaap J. Boon
Keyword(s):  
Cross Sections ◽  
Layer Structure ◽  
Information Source ◽  
Particle Morphology ◽  
Paint System ◽  
Lead White ◽  
White Pigment ◽  
Oil Paintings ◽  
Backscattered Electron ◽  
And Migration

AbstractScanning electron microscopy backscattered-electron images of paint cross sections show the compositional contrast within the paint system. They not only give valuable information about the pigment composition and layer structure but also about the aging processes in the paint. This article focuses on the reading of backscatter images of lead white-containing samples from traditional oil paintings (17th–19th centuries). In contrast to modern lead white, traditional stack process lead white is characterized by a wide particle size distribution. Changes in particle morphology and distribution are indications of chemical/physical reactivity in the paint. Lead white can be affected by free fatty acids to form lead soaps. The dissolution of lead white can be recognized in the backscatter image by gray (less scattering) peripheries around particles and gray amorphous areas as opposed to the well-defined, highly scattering intact lead white particles. The small particles react away first, while the larger particles/lumps can still be visible. Formed lead soaps appear to migrate or diffuse through the semipermeable paint system. Lead-rich bands around particles, at layer interfaces and in the paint medium, are indications of transport. The presence of lead-containing crystals at the paint surface or inside aggregates furthermore point to the migration and mineralization of lead soaps.

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