A5058668982- Cultural Heritage Materials Analysis
- Building materials and conservation
- Conservation Techniques and Studies
- Calibration and Measurement Techniques
- Radiative Heat Transfer Studies
- Chemical Thermodynamics and Molecular Structure
- Glass properties and applications
- Advanced Sensor Technologies Research
- Material Dynamics and Properties
- 3D Surveying and Cultural Heritage
- Surface Roughness and Optical Measurements
- Image Processing and 3D Reconstruction
- Dyeing and Modifying Textile Fibers
State Hermitage Museum
2016-2023
Hermitage Museum
2023
All-Russian Research Institute for Optical and Physical Measurements
2013
Abstract Nowadays, a problem of historical beadworks conservation in museum collections is actual more than ever because fatal corrosion the 19th century glass beads. Study beads at different stages using FTIR was carried out attenuated total reflection mode range from 200 to 4000 cm −1 . We have observed depolymerization degraded beads, which exhibited domination band peaked ∼1000 conclude that simplification structure during its long-term degradation room temperature may be explained...
The long-term corrosion of glass is thoroughly investigated using polarising light microscopy, FTIR spectroscopy and scanning electron microscopy including EDX elemental mapping. Early 19th century beads made turquoise lead-potassium are the object study. Considerable non-uniformly distributed internal stresses were introduced into studied during bead manufacturing. seed-bead has been shown to comprise several mutually connected processes developing in parallel intensifying one another....
Analysis of the IR spectra samples from 230 Russian oil paintings 20th century is used to propose a procedure for threshold estimation age based on measured parameters (intensity ratios spectral bands). The bands compounds that are formed upon interaction pigment (zinc white) with dating.
Glass seed beads probably are the most numerous group of art historical glass. From ancient times to modern era, glass played an essential role in culture, as they were used, e.g., decorate clothing, religious objects and functional tools, served important good for global trade. The conservation state items made is actual issue curators conservators. Glass, well known, often unstable material, so a number internal external factors responsible chemical physical processes on surface. It was...
The study of paintings’ layer structure under microscope was implemented in the early XX century; since that time method cross-section preparation as well composition embedded materials changed and capabilities optical microscopy broadened. Nevertheless, until recently cross-sections were prepared only for analysis layer-specific structure, morphological technological features, tracks restoration treatments. Examination chemical required additional sampling division these samples by order to...
The paper is devoted to VNIIOFI's measurements of thermodynamic temperature the high fixed points Co-C, Pt-C and Re-C within scope international project coordinated by Consultative Committee for Thermometry working group 5 "Radiation Thermometry". melting temperatures were measured a radiance mode radiation thermometer calibrated against filter radiometer with known irradiance spectral responsivity via black body. This describes facility used measurements, results estimated uncertainties.
Physical and chemical methods of analysis are indispensable for restoration, study painting techniques, examination attribution works art. Development new directions investigations as well improvements in sample preparation allow applying non-destructive methods, minimizing amount matter used to obtain informative spectra, preventing alteration destruction samples the course investigation. This paper observes examples optical spectral including molecular electron microscopy, binding media...
Two national metrological institutes of the Russian Federation, VNIIM and VNIIOFI, take part in international research plan CCT WG5 for investigation high-temperature fixed points (HTFP). In framework this CCT-WG5 HTFP Research Plan both have designed built independently cobalt-carbon (Co-C) eutectic radiation cells. The comparison Co-C cells developed by was carried out with aim determination a difference melting temperature due to constructional characteristics radiance-mode thermometers...
Long-term corrosion of glass is studied using polarising light microscopy, FTIR and SEM including EDX elemental mapping. Early 19th century beads made lead-potassium are the object study. Non-uniformly distributed internal stresses were introduced into during bead manufacturing. Corrosion has been shown to comprise several mutually connected processes developing in parallel intensifying one another. These depolymerization glass, directed migration alkali-metal impurities local leaching,...