Autor: Wach, D. - Katalog OPAC zbiorów

Skocz do pozycji: 16.

Tytuł:: Relationship between the rheological parameters and zeta potential of bentonites
Autorzy:: Kowalczyk, D.
Wach, M.
Plewik, A.
Wysocki, S.
Powiązania:: https://bibliotekanauki.pl/articles/298880.pdf
Data publikacji:: 2016
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: electrokinetic phenomena
zeta potential
drilling fluids
bentonite
Opis:: The paper presents an estimation of bentonites quality using electrokinetic phenomena occurring in dispersed clay systems. The idea behind the work is to demonstrate the relationship between the rheological parameters of the tested materials, and their zeta potential and consequently determine the suitability of these criteria for preparing drilling fluids.
Źródło:: AGH Drilling, Oil, Gas; 2016, 33, 4; 663-669
2299-4157
2300-7052
Pojawia się w:: AGH Drilling, Oil, Gas
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 17.

Tytuł:: The influence of laser re-melting on micro-structure and hardness of gas-nitrided steel
Wpływ parametrów laserowej obróbki cieplnej na mikrostrukturę i mikrotwardość azotowanej gazowo stali
Autorzy:: Panfil, D.
Wach, P.
Kulka, M.
Michalski, J.
Powiązania:: https://bibliotekanauki.pl/articles/94166.pdf
Data publikacji:: 2016
Wydawca:: Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:: gas nitriding
laser heat treatment
microstructure
hardness
azotowanie gazowe
laserowa obróbka cieplna
mikrostruktura
twardość
Opis:: In this paper, modification of nitrided layer by laser re-melting was presented. The nitriding process has many advantageous properties. Controlled gas nitriding was carried out on 42CrMo4 steel. As a consequence of this process, ɛ+ɣ’ compound zone and diffusion zone were produced at the surface. Next, the nitrided layer was laser re-melted using TRUMPF TLF 2600 Turbo CO₂ laser. Laser tracks were arranged as single tracks with the use of various laser beam powers (P), ranging from 0.39 to 1.04 kW. The effects of laser beam power on the microstructure, dimensions of laser tracks and hardness profiles were analyzed. Laser treatment caused the decomposition of continuous compound zone at the surface and an increase in hardness of previously nitrided layer because of the appearance of martensite in re-melted and heat-affected zones.
Źródło:: Archives of Mechanical Technology and Materials; 2016, 36; 18-22
2450-9469
Pojawia się w:: Archives of Mechanical Technology and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 18.

Tytuł:: The Application of Deep Cryogenic Treatment to Improve the Properties of Nitrided Layers Formed on X153CrMoV12 Steel
Autorzy:: Wach, P.
Ciski, A.
Babul, T.
Kapuścińska, A.
Oleszak, D.
Powiązania:: https://bibliotekanauki.pl/articles/355130.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: gas nitriding
nitride layers
cryogenic treatment
heat treatment
tribology
corrosion resistance
X153CrMoV12 steel
Opis:: Deep cryogenic treatment (DCT) is gaining popularity as a treatment used to modify structures obtained during heat or thermo-chemical treatment. The article presents the influence of DCT, carried out during heat treatment before and after gas nitriding processes, on the formation of gas nitrided layers on X153CrMoV12 steel. It was found that the use of DCT between quenching and tempering performed prior to gas nitriding processes, increases the hardness, thickness and wear resistance of the nitrided layers. At the same time, if we apply cryogenic treatment during post-heat treatment of nitrided layers, we also get very high wear resistance and increased thickness of nitrided layers, in comparison with conventional gas nitriding of X153CrMoV12 steel. In this case, DCT significantly increases also the hardness of the core by the transformation of retained austenite and the precipitation of fine carbides of alloying elements.
Źródło:: Archives of Metallurgy and Materials; 2019, 64, 1; 303-309
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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