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Analysis of tribological wear in block – on ring contact on tribological tester T-05

Kubik Andrzej, Hadryś Damian, Stanik Zbigniew, Jasiok Marek

Zeszyty Naukowe. Transport / Politechnika Śląska

2019

z. 105

113--123

Friction is one of the most common phenomena in this technique. The friction process in the tribography systems causes both energy losses and consumption process losses. The layer of the surface of a solid body differing from the material to the entire volume of the solid is a close participant in the tribological process. The effects of external influences during treatment of the material and in friction processes were established and modified. The well-shaped layer of the surface provided optimum tribological properties during operation. This work provides an analysis of the use of a tribological pair working in a rotational movement, in different operating conditions. The tests carried out showed the impact of the selected exploitation factors, that is, the speed and load, the consumption and the friction coefficient of the saliva and the graphical interpretation of results from the results obtained from experimental and metallographical studies. The tests carried out in the block-on ring position of the T-05 tribology was the nature of preliminary tests. Preliminary tests enabled the effects of designated performance parameters to be determined on selected tribological properties. Low-carbon steel used for heat-chemical treatment and steel with DLC coating was used for the test. Metallographic studies enabled the dominant use mechanism to be determined, depending on external factors. The application of the above-mentioned value for materials currently used in various types of constructions allows for extending the life of a given device without major financial and constructional costs. A wide range of applications can bring many benefits to the current design solutions, in which the efficiency of the entire device can be easily improved.

Influence of substrate type on structure of C-Pd thin films

Kowalska E., Czerwosz E., Kozłowski M., Firek P., Rymarczyk J., Radomska J.

Elektronika : konstrukcje, technologie, zastosowania

2011

Vol. 52, nr 7

61-64

C-Pd films were obtained by a two steps' PVD/CVD method (Physical Vapor Deposition/Chemical Vapor Deposition). Investigations of Pd nanograins and carbon matrix structure were performed. The films were formed on many types of substrates with various specific surface area (SSA). Pure Si wafers and Si wafers covered with DLC (Diamond Like Carbon) layer were used as substrates with a smooth surface, whereas Al₂ O₃ plates and AAO (Anodic Aluminium Oxide) membranes with pores of about 200 nm, were applied as substrates with a rough surface. The results of SEM (Scanning Electron Microscopy) and AFM (Atomic Force Microscopy) investigations of C-Pd films obtained on various substrates are presented. It is shown that SSA of substrates influences on topography, morphology and nanostructure of C-Pd films deposited on them.

Warstwy C-Pd zostały wytworzone metodą dwustopniową PVD/CVD (Physical Vapor Deposition/Chemical Vapor Deposition). Przeprowadzono badania nanoziaren Pd i struktury matrycy węglowej. Warstwy osadzano na wielu rodzajach podłoży o zróżnicowanej powierzchni właściwej. Jako podłoża o gładkiej powierzchni zastosowano płytki Si i Si pokryte warstwą DLC (Diamond Like Carbon), zaś płytki Al₂ O₃ i membrany AAO (Anodic Aluminium Oxide) użyto jako podłoża o powierzchni chropowatej. W pracy zaprezentowano wyniki badań SEM (Scanning Electron Microscopy) i AFM (Atomic Force Microscopy) warstw C-Pd otrzymanych na różnych podłożach. Pokazano, że powierzchnia właściwa podłoży wpływa na topografię, morfologię i nanostrukturę warstw C-Pd osadzanych na nich.

Structure and properties of carbon layers on NiTi shape memory alloy

Lelątko J., Goryczka T., Rówiński E., Pączkowski P., Drdzeń A., Morawiec H.

Advances in Materials Science

2007

Vol. 7, nr 3(13)

57-62

NiTi alloys are frequently used in medical applications as a material for implants. The high risk of toxicity, caused by diffusion of nickel ions to the human body, requires developing a technology for deposition of a protective layer. Due to the unique physical and chemical properties the carbon-based layers are one of the possibilities for a surface protection. The carbon layer was deposited on Ni(50.6at%)Ti shape memory alloy using the RFPECVD process. The layers were studied using a wide range of methods. The structure was investigated using a high resolution electron microscope, greasing incident X-ray diffraction and reflectometry. The Auger spectrometer was applied for chemical analyses. Results reveal that the structure of carbon layer consists of nanocrystaline diamond particles in amorphous and/or nano-graphitic matrix. Basing on the Auger spectroscopy it was stated that the layers posses DLC qualities. The layers, deposited in this process, have a good quality and high corrosion resistance.