List of publications on a keyword: «плавление»


Технические науки

Publication date: 21.04.2023
Evaluate the material Average score: 0 (Всего: 0)
Ding Kai Jian , candidate of engineering sciences , professor
The University of Technology of China , The People's Republic of China

«The study modification processes of the surface layer and fabrication of three-dimensional machine parts by selective laser melting»

Download an article

The SLM-process has been optimized for manufacturing of parts from Co-base alloy powder on the machine ПТК-ПС. The XRD analysis is researched and physic-mechanical properties of the samples made on optimum parameters of selective laser melting are defined.

Тема номера

Publication date: 25.01.2022
Evaluate the material Average score: 0 (Всего: 0)
Gennadiy G. Haydarov , candidate of engineering sciences , associate professor
Andrey G. Haydarov , candidate of engineering sciences, associate professor , associate professor
St. Petersburg State Technological Institute (Technological University) , Санкт-Петербург г

«Korreliatsiia temperatur plavleniia, kipeniia i kriticheskoi so skrytoi teplotoi plavleniia veshchestva»

Download an article

В данной статье на основании молекулярно-энергетической концепции распаковки вещества рассмотрен взгляд на температуры плавления, кипения и критическую для вещества с точки зрения изменения энергии молекулы вещества. Показана теоретическая взаимосвязь каждой из этих температуры со скрытой теплотой плавления. Результаты этой взаимосвязи доведены до расчетных формул. Полученные формулы подтверждены данными из справочников и известными эмпирическими зависимостями. На основании анализа справочных данных сделан вывод о скрытой теплоте плавления, как части внутренней энергии вещества. Таким образом с помощью модели распаковки вещества найдено еще одно подтверждение единой связи явления поверхностного натяжения, процессов поверхностного плавления, плавления в объеме, поверхностного кипения, кипения в объеме, испарения.

Publication date: 15.01.2021
Evaluate the material Average score: 2 (Всего: 1)
Gennadiy G. Haydarov , candidate of engineering sciences , associate professor
Andrey G. Haydarov , candidate of engineering sciences, associate professor , associate professor
St. Petersburg State Technological Institute (Technological University) , Санкт-Петербург г

«Molecular Energy Concept of Substances Unpacking»

Download an article

This article brings together previously published evidence of the unified nature of physical processes and phenomena in terms of changes in the energy of a substance molecule. The unified physical nature of all these physical phenomena has been proven, as a single multistage process of energetic unpacking of molecules of a substance, which is logical to call the molecular-energy concept of unpacking a substance. The considered processes include the following processes. Surface rupture, characterized by the surface tension coefficient. The melting process of a substance characterized by its melting point. A boiling process characterized by the boiling point. Evaporation (and condensation) process characterized by internal energy and enthalpy as well as critical point. The conclusions of the theory are confirmed by well-known empirical dependences and by reference books of the physical properties of simple substances: internal energy, enthalpy, surface tension, melting point, boiling point and critical point.

Технические науки

Publication date: 13.02.2018
Evaluate the material Average score: 5 (Всего: 1)
Emil R. Umerov
FSBEI of HE “Samara State Technical University” , Самарская обл

«Исследование возможности пропитки пористого каркаса карбосилицида титана хромом»

Download an article

В данной статье автором рассмотрена возможность получения металлокерамического каркасного композиционного материала на основе титансодержащих МАХ-фаз по технологии СВС.

Физика

Publication date: 11.07.2018
Evaluate the material Average score: 0 (Всего: 0)
Gennadiy G. Haydarov , candidate of engineering sciences , associate professor
Andrey G. Haydarov , candidate of engineering sciences, associate professor , associate professor
St. Petersburg State Technological Institute (Technological University) , Санкт-Петербург г

«Correlation of temperatures of melting and boiling of substances from the hypotheses of unpacking the substance»

Download an article

According to the properties of melting points and boiling points of the elements of the periodic table of D.I. Mendeleyev the application of the unpacking hypothesis of the substance was verified. The article contains the results of the verification. In general, according to the data for 98 substances taken from the information in Internet, convergence of results with an error of up to 40% for 73 substances was obtained. The effect of periodicity on the result is found. An exception to the calculated dependences was obtained for ten substances: noble gas and most halogens. A large discrepancy between the theoretical formulas and the reference data was also caused by the 14 elements of the middle groups.

Технические науки

Publication date: 22.03.2017
Evaluate the material Average score: 0 (Всего: 0)
Ilia V. Belousov
Tatiana N. Borovik
Moscow Technological University , Москва г

«Влияние дефокусировки на возникновение прожогов при импульсной лазерной сварке серебра»

Download an article

The article describes the influence of various methods of increasing silver penetration with impulse laser welding. The objective of the research was to achieve optimum defocusing in critical energy laser radiation for impulse laser welding of silver samples of various thicknesses.

Физика

Publication date: 05.05.2016
Evaluate the material Average score: 0 (Всего: 0)
Gennadiy G. Haydarov , candidate of engineering sciences , associate professor
Andrey G. Haydarov , candidate of engineering sciences, associate professor , associate professor
St. Petersburg State Technological Institute (Technological University) , Санкт-Петербург г

«Interconnection between melting, boiling and critical points»

Download an article

We received theoretical formulas of the interconnection between melting, boiling and critical temperatures. Uniform physical representation of melting, boiling and evaporation processes was the basis for deriving the formula of interconnection between them. We use the concept of the material substance internal energy in terms of the molecules “unpacking” idea. The reference manual data on 85 substances from 13 to 855 degrees Kelvin confirms the theoretically derived formulas. We carried out the comparison of theoretical formulas and experimental data by their mean values. A simple ideal substance model with spherical molecules was considered as a model of substance molecule. The melting point is 1/3, and the boiling point ranges from 1/2 to 2/3 of the critical point for this model.

Технические науки

Publication date: 17.07.2014
Evaluate the material Average score: 0 (Всего: 0)
Lenart M. Fatykhov
ООО «РН–УфаНИПИнефть» , Башкортостан Респ

«Динамика плавления парафиновых отложений в сверхвысокочастотном электромагнитном поле»

Download an article

В работе экспериментально исследуется плавление парафиновой пробки в коаксиальной линии сверхвысокочастотным электромагнитным полем.