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Wyszukujesz frazę "metal crystallization" wg kryterium: Wszystkie pola


Wyświetlanie 1-2 z 2
Tytuł:
Comparison of uroliths and gallstones crystallization with metal crystallization
Autorzy:
Klimek, L.
Powiązania:
https://bibliotekanauki.pl/articles/379871.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
urolith
gallstone
metal crystallization
nucleation
kamień moczowy
kamień żółciowy
krystalizacja metalu
nukleacja
Opis:
The human organism creates different deposits in the form of minerals which play an important role in its functioning. Some of them located mainly in blood vessels, kidneys and urinary tracts, biliary tracts, salivary, pancreatic, new growths etc. have a determinately negative effect. Recognition of these minerals, getting to know the conditions in which they grow and first of all the processes of their appearance have a primary meaning in the possibility of prevention of their crystallization. The work shows the results of microscopic and diffractometric tests of uroliths and gallstones. On the basis of this research it is possible to state that there is a certain analogy in the crystallization process of these deposits with crystallization of metals. As far as the process of nucleation is concerned, only heterogenic nucleation takes place. But in the process of growth faced crystals and non-faced crystals appear. Thus, it can be assumed that there are some analogies in the process of metal crystallization with the crystallization of deposits in the human body.
Źródło:
Archives of Foundry Engineering; 2011, 11, 3 spec.; 117-120
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Use of the TVDA Method to Assessment of EN AC-AlSi9Mg Alloy Hardness Moulded in Metal Moulds
Autorzy:
Pezda, J.
Powiązania:
https://bibliotekanauki.pl/articles/381615.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
aluminum alloys
crystallization
hardness
regression analysis
stopy aluminium
krystalizacja
twardość
analiza regresji
Opis:
Mechanical properties of aluminum-silicon alloys are defined by condition of alloying components in the structure, i.e. plastic metallic matrix created from solid solution &alpha on the basis of Al, as well as hard and brittle precipitations of silicon. Size and distribution of silicon crystals are the main factors having effect on field of practical applications of such alloys. Registration of crystallization processes of the alloys on stage of their preparation is directly connected with practical implementation of crystallization theory to controlling technological processes, enabling obtainment of suitable structure of the material and determining its usage for specific requirements. An attempt to evaluate correlation between values of characteristic points laying on crystallization curves and recorded with use of developed by the author TVDA method (commonly denominated as ATND method) is presented in the paper together with assessment of hardness of tested alloy. Basing on characteristic points from the TVDA method, hardness of EN AC-AlSi9Mg alloy modified with strontium has been described in the paper in a significant way by the first order polynomial.
Źródło:
Archives of Foundry Engineering; 2019, 1; 25-28
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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