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  • Author or Editor: A. Myslinski x
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Abstract  

Application of temperature modulated dilatometry (TM DIL) to investigation on degradation of the adhesion between ceramic films and the substrate is presented. Layers of titanium nitride deposited by plasma assisted physical vapour deposition (PA PVD) methods on the Armco iron substrates were tested. This paper shows that the TM DIL method is helpful in determining the usefulness of the titanium nitride covering of the cutting tools and machine parts.

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Excess heat of mixing of pyridine bases with toluene

Experimental results and theoretical description

Journal of Thermal Analysis and Calorimetry
Authors: H. Wilczura, T. Kasprzycka-Guttman, and A. Myslinski

Abstract  

The excess heats of mixing of pyridine bases with toluene at 298.15 K were measured, and the Prigogine-Flory-Patterson theory was applied to describe the experimental results.

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Abstract  

The aim of the present work is to find relation between the state of ceramic coating of iron and the physical properties of coated samples as a function of temperature. The iron samples coated by plasma assisted physical vapor deposition (PA PVD) with layers of TiN were investigated with new technique – temperature modulated thermomagnetometry (TM TMAG) and thermal dilatometry (TM DIL). From the irregular behavior of the thermal dilatation and magnetic susceptibility, the process of the coating degradation can be resolved.

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Excess heat of mixing of α-picoline withn-alkanes

Comparison with the Prigogine-Flory-Patterson theory and the extended real associated solution method

Journal of Thermal Analysis and Calorimetry
Authors: T. Kasprzycka-Guttman, H. Wilczura, and A. Myslinski
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Abstract  

The work is aimed to develop the diagnostic method for testing the state of surface coated with the wear-resistant films. Thin wear-resistant ceramic films based on titanium such as TiN, TiCN, TiAlN are deposited on working surface of cutting tools or machine elements in order to improve their tribological properties. The operation life depends mainly on the residual stresses occurring in films and the kinetics of their relaxation as a function of temperature and time. The value of the stresses is influenced by the technological conditions of film deposition and the physical and chemical properties of the substrate and film. The paper has demonstrated the usability of the modulated-temperature dilatometry (MT DIL) for recording the changes in mechanical effects of the adhesive film on the substrate as a function of temperature and time. The substrates where in the shape of cylindrical rod, 30 mm length and 3 mm diameter and of the ribbon 30 mm in length, 2 mm in wide and 120 μm thick. The thickness of the coatings was from 2 to 3 μm. The films deposition were performed using the physical vapour deposition (PVD) technique.

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The molar excess enthalpies measured for binary mixtures of 2-, 3-, 4-picoline +n-alkane (C6H14-C10H22) at 298.15 K have been compared with the Prigogine-Flory-Patterson theory and the Extended Real Associated Solution model estimations.

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The intermolecular interactions in binaries

Pyridine base + hydrocarbon, on the base of experimental enthalpy of mixing data

Journal of Thermal Analysis and Calorimetry
Authors: H. Wilczura, T. Kasprzycka-Guttman, M. Jarosz-Jarszewska, and A. Myslinski

Abstract  

The recapitulation of systematical investigations of excess enthalpy of mixing in binary mixtures: pyridine base +n-alkane or some of arenes is presented. On the base of experimental results as well as model calculations (PFP, ERAS) the discussion of intermolecular interactions in pyridine bases is given.

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