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Purpose: A new approach to quality control in production company with usage of quality research methods has been presented. Design/methodology/approach: The possibility of usage of quality research methods are connected with continuous quality improvement of pre-production, production and after-production spheres of organization. Interdependence of the quality research methods and product life cycle...
Purpose: The purpose of this paper is presentation of the computer program for calculating the Continuous Cooling Transformation diagrams for constructional and engineering steels. Design/methodology/approach: The computer program uses the artificial neural networks for prediction steel properties after heat treatment. Input data are chemical composition and austenitizing temperature. Results of calculation...
Purpose: The goal of this work is to develop the neural network model for prediction of properties Ti+TiN, Ti+Ti(C,N) and Ti+TiC coatings obtained in the PVD process. Design/methodology/approach: Neural network models were developed based on the experimental results multifractal analysis of the examined coatings were made basing on measurements obtained from the AFM microscope, using the projective...
Purpose: The goal of this work was development of the computer aided system for selection of technological parameters for making the metallographic microsections for the microscopic examinations. Design/methodology/approach: Prolog language - the Artificial Intelligence tool was employed in the project, and the Logic Programming Associate's VisiRule system, which was used for saving the knowledge...
Purpose: The aim of the research is the computer simulation of the internal stresses in bilayer coatings Ti+Ti(CxN1-x) obtained in the magnetron PVD process on the sintered high-speed steel of the ASP 30 in working atmosphere including 75% N2 i 25% CH4, 50% N2 i 50% CH4, and 25% N2 i 75% CH4. Design/methodology/approach: Computer simulation of stresses was carried out in ANSYS environment, using the...
Purpose: The purpose of the paper is to show the possibility of application in different branches the techniques of nanostructural soft magnetic composite materials: Fe73.5Cu1Nb3Si13.5B9 alloy powder bounded by polyethylene and the worked out technique of their obtaining. Design/methodology/approach: The main base of the paper is to show the properties and possibilities of application of modern nanostructural...
Purpose: The aim of the research is the investigation of the mechanical properties of gradient coatings deposited by PVD technique (cathodic arc evaporation method) onto the substrate from the X40CrMoV5-1 hot work steel. Design/methodology/approach: The microhardness tests were made on the dynamic ultra-microhardness tester. Tests of the coatings' adhesion to the substrate material were made using...
Purpose: The aim of the work is to investigate the structure and magnetic properties of the cobalt based hot pressed Co68Fe4Mo1Si13.5B13.5 powder obtained in high-energy ball milling process. Design/methodology/approach: The nanocrystalline ferromagnetic powders were manufactured by high-energy ball milling of metallic glasses ribbons in as state. The hot pressing process was made on machine "Degussa"...
Purpose: The purpose of this paper was to describe results of application of thermography to evaluate the degree of fatigue degradation of epoxy-glass composites. Design/methodology/approach: Samples of epoxy-glass composite were subjected to fatigue degradation. During fatigue test, after defined number of cycles, samples were heated using infra-red heater and at the opposite side temperature increase...
Purpose: Comprehensive structure and properties investigation results of the multilayer, multi-component, gradient PVD and CVD coatings developed on the Si3N4 nitride tool ceramics substrate are presented in the paper. Design/methodology/approach: The detailed results are presented of examinations carried out on the transmission and scanning electron microscopes, as well as of the mechanical properties...
Purpose: Investigation of structure and properties of the Al2O3 based Al2O3+ZrO2, Al2O3+TiC and Al2O3+SiC(w) type based oxide tool ceramics coated with the anti-wear mono- and multilayers of the TiN, TiAlN, TiN+TiAlSiN+TiN, TiN+multiAiAlSiN+TiN and TiN+TiAlSiN+AlSiTiN types in the cathode arc evaporation CAE-PVD and with the multilayers of the TiCN+TiN and TiN+Al2O3 types obtained in the chemical...
Purpose: The objective of the work was to investigate changes in structure and properties of Cu-yttria microcomposites which take place in the process of controlled sintering and deformation of materials of nanometric initial structure. Design/methodology/approach: Tests were made with the Cu-yttria micro-composites containing up to 3 % of a hardening phase. These were obtained by powder metallurgy...
Purpose: The aim of this paper is to show influence of doping 1,4-phenylene-methylenenitrilo-1,4- phenylenenitrilomethylene (PPI) with iodine and to propose doping mechanism and its impact on electronic structure of doped PPI thin films. Design/methodology/approach: Influence of iodine doping on electronic structure of polyazomethine thin films was investigated. Optical absorption spectra, XRD spectra...
Purpose: It has been demonstrated in the paper structure and properties of high speed-steel HS6-5-2 type manufactured by different method of powder metallurgy. Design/methodology/approach: Light microscope, SEM, image analysis, hardness tests, density examination, transverse rupture strength tests, analysis of chemical composition by LECO apparatus. Findings: Basing on the investigations of the HS6-5-2...
Purpose: The purpose of the paper is to present the technological solution of obtaining hard magnetic composite materials based on Nd-Fe-B with addition of iron powder and bounded by epoxy resin. Design/methodology/approach: Composite materials reinforced by Nd-Fe-B particles or Nd-Fe-B with addition of iron powder with polymer matrix were manufactured by one-sided uniaxal pressing. The complex relationships...
Purpose: Investigation of gradient coating of (Ti,Al,Si)N deposited on the Al203+SiC(w) oxide ceramics substrate by cathodic arc evaporation CAE-PVD method. Design/methodology/approach: Structure of substrate and coating was investigated with use of scanning electron microscopy (SEM). The X-Ray Photoelectron Spectrometry (XPS) examination was carried out for proving the gradient character of the (Ti,Al,Si)N...
Purpose: The investigation results of crystallization, in temperature range of 300-700 degrees centigrade in time 1 h, of amorphous Fe84Nb7B9 alloy. The alloy was obtained in tape form by planar-flow-casting method. Design/methodology/approach: The structure was characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD) method. The measurement of mechanical properties, like: tensile...
Purpose: The main aim of this research was investigation of the gradient and multicomponent coatings structure deposited by cathode arc evaporation physical vapor deposition (CAE-PVD) on a SiAlON substrate. Design/methodology/approach: The structure of investigated coatings was characterized by scanning and transmission electron microscopy. Chemical composition was determined by energy dispersive...
Purpose: In order to gain a better understanding of how to control the as-cast microstructure, it is important to understand the evaluation of microstructure during solidification and understanding how influence the changes of chemical concentration on this microstructure and mechanical properties. In this research, the effect of Cu content on the microstructure and mechanical properties of AC AlSi9CuX...
Purpose: The main aim of this article is to present the usage of educational platform Moodle in teaching Fundamentals of Materials Science in the Institute of Engineering Materials and Biomaterials at Silesian University of Technology in Gliwice, and to analyse the efficacy of e-learning as the means of introducing education within a traditional model. Design/methodology/approach: This article contains...
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