Netherlands Institute for Conservation, Art and Science

NICAS Colloquium

26Oct2017 12:00 - 13:00


The next edition of the NICAS Colloquium takes place on Thursday, 26 October 2017, from 12:00 to 13:00 hrs.

PLEASE NOTE! the colloquium will take place in the main conference room on the ground floor of the Bureau of the Rijksmuseum (Hobbemstraat 20, Amsterdam), NOT in the Atelier Building itself!


The chair of this colloquium will be Ige Verslype (Rijksmuseum), Paintings conservator.


The following presentations are scheduled for this edition of the NICAS Colloquium:

Victor Gonzalez

Microstructure and luminescence of lead carbonates: revealing the Old Masters pigment qualities

The presented work bears on the lead white pigment, used in paintings since the Antiquity. Historical sources reveal that painters of the past employed elaborate preparation recipes to obtain different qualities of this pigment. A better understanding of those manufacture secrets was achieved by a micro-structural and optical characterization of lead white constitutive carbonates phases. The analysis of artworks and micro-samples conserved in the Louvre Museum, notably by Synchrotron radiation-based methods, revealed pictorial techniques of Renaissance Old Masters.

Victor Gonzalez recently started a post-doc with TU-Delft and the Rijksmuseum, working on the Rembrandt ReVis project. Prior to this position, he obtained a PhD in Chemistry from the UPMC University and the C2RMF in Paris.17

Sara Creange

When X-rays aren’t enough: neutron imaging for bronzes

Four bronzes from the Rijksmuseum / Asian Art Society in the Netherlands were subjected to white beam neutron tomography and energy selective scans at Helmholtz-Zentrum Berlin (HZB). Neutron imaging techniques are ideally suited for this study group because—unlike X-rays--neutrons easily penetrate thick-walled and even solid-cast bronzes. Neutrons also reveal non-metal features such as core, corrosion and restoration materials. The striking neutron images that were generated during this project provide clues about casting techniques as well as stability of the bronzes. The images pave the way for further neutron diffraction studies (planned in 2018) which will generate information about bulk composition and metallographic structure in a completely non-destructive manner.

Sara Creange is a metals conservator at the Rijksmuseum, where she is involved in technical studies and conservation treatments of sculpture and decorative arts objects.

NICAS Colloquium

More information about the NICAS Colloquium can be found here.



Thursday, 26 October 2017


12:00 – 13:00 hrs


Conference room, Bureau of the Rijksmuseum
Hobbemastraat 20, Amsterdam

Published by  NICAS