Ultrafast laser dynamics and interactions in complex materials

The use of high temperature special ceramics which are usually complex materials based on oxides, nitrides, carbides and borides of silicon and aluminum, is critically dependent on their thermomechanical and other physical properties. The investigations of the phase diagrams, crystal structures and microstructural features are essential for better understanding of the macro-properties. Phase diagrams and crystal structures have been studied mainly by X-ray diffraction (XRD). Transmission electron microscopy (TEM) has contributed to this field to a very limited extent; it has been used more extensively in the study of microstructure, phase transformations and lattice defects. Often only TEM can give solutions to numerous problems in the above fields, since the various phases exist in extremely fine grains and subgrain structures; single crystals of appreciable size are often not available. Examples with some of our experimental results from two multicomponent systems are presented here. The standard ion thinning technique was used for the preparation of thin foil samples, which were then investigated with JEOL 200A and Siemens ELMISKOP 102 (for the lattice resolution work) electron microscopes.

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Ultrafast laser processing of ceramics: Comprehensive survey of laser parameters

Journal of Laser Applications ◽

10.2351/7.0000310 ◽

2021 ◽

Vol 33 (1) ◽

pp. 012009

Author(s):

Aiko Narazaki ◽

Hideyuki Takada ◽

Dai Yoshitomi ◽

Kenji Torizuka ◽

Yohei Kobayashi

Keyword(s):

Laser Processing ◽

Ultrafast Laser ◽

Laser Parameters ◽

Comprehensive Survey

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Professional risk in processing processes complex (review of literature)

Sanitarnyj vrač (Sanitary Inspector) ◽

10.33920/med-08-2003-03 ◽

2020 ◽

pp. 29-37

Author(s):

L. Mavrina ◽

E. Shaikhlislamova ◽

I. Khasanova ◽

L. Karimova ◽

N. Muldasheva ◽

...

Keyword(s):

Working Conditions ◽

Urgent Problem ◽

Review Of Literature ◽

Complex Materials ◽

Work Analysis ◽

Production Factors ◽

Bibliographic Data ◽

Industrial Injuries ◽

The Impact ◽

Safe Working

The relevance of the problem. Ensuring safe working conditions is currently an urgent problem of our time. Purpose of work. Analysis of bibliographic data on issues of occupational risk, industrial injuries among workers of the processing complex. Materials and methods. To achieve this goal, materials related to this topic were studied in the works of domestic and foreign scientists. Results. A lot of scientific works are devoted to the problem of assessing professional risk in the production of a processing complex. Modern research has proved that risk assessment is one of the main methods for analyzing the impact of various production factors on an employee. Conclusion Occupational morbidity and industrial injuries are a consequence of unsatisfactory conditions and labor protection in enterprises.

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