On the martensitic non-corrosive steel support (Z12CNDV12) it is deposited by plasma jet, tungste... more On the martensitic non-corrosive steel support (Z12CNDV12) it is deposited by plasma jet, tungsten carbide, in three different thicknesses. We determined the electrochemical potential of both the coating layer and the substrate for different concentrations of NaCl in a solution. The experimental results are mathematically processed. From each protective coating a 1, 2 and 3 degree polynomial fit were obtained. Also, the comparison between the three obtained thicknesses mathematical function is realized.
It is well-know that the numerous functions of use of materials can be realized at a high level o... more It is well-know that the numerous functions of use of materials can be realized at a high level of performance by using plasma jet coatings, with the reduction of the consumption of important strategic metals. These are determined by the excellent resilience to extreme temperatures, corrosion and wear of the coatings. This paper aims to characterize coating layers based on Al2O3 realized by plasma jet spray by examining its hardness, thermal shock resistance, traction resistance.
The work presents some researches regarding to utilization in cement industry of the sideritic re... more The work presents some researches regarding to utilization in cement industry of the sideritic residue, stored in the ponds near from Hunedoara. Thus, on the chemical and granulometric compositions is obtained a number of 10 recipes of clinker, and finally are presented an optimum recipe. The purpose of this researches was reused a manufactured residue, which momentary is stored on large ground surfaces. Through suggested variant are desired the rendition to natural area of this polluted surfaces, parallel with economic effect for reducing quantities of calcite and clay in clinkers production from the cement industry.
The paper presents the experimentations made in the laboratories of Faculties of Engineering from... more The paper presents the experimentations made in the laboratories of Faculties of Engineering from Hunedoara and also in the frame of Carpatcement Holding Deva laboratories, looking at the introduction of the sideritic residue along with the clinker, for obtain of cement. For suggested recipe, were determinate the specific surfaces, setting time, compression strength. Result obtained in the laboratory condition proven as the proposal is viable as much from economic and ecologic point of view, through the recycling of manufactured residue existing in very big amounts in approach of Hunedoara area.
EMAN 2019 – Economics & Management: How to Cope With Disrupted Times CONFERENCE PROCEEDINGS, 2019
Individuals live their lives under the forces of time and ignorance. Since the economy is dealing... more Individuals live their lives under the forces of time and ignorance. Since the economy is dealing with the study of a significant part of people’s lives, it was normal that aspects of it to be considered sooner or later. Our intention, when we started this paper, was to develop a certain apparatus of economic analysis, which unites several branches of the sciences that study the products of cooperation between people and to show how these products evolve depending on the expectations and the time horizon of individuals. The term “ignorance” has nothing pejorative in this context because it is largely the result of a rational choice of individuals. Limiting resources, and in particular time availability, causes people not to use all the information they might gather if they have at their disposal unlimited amounts of time and money. In addition, certain information, such as the tastes and wishes of others, is inaccessible to the individual from an economic point of view. The individu...
For the coats made by using the TiO2 powder (type Metco 102) on a martesitic stainless steel subs... more For the coats made by using the TiO2 powder (type Metco 102) on a martesitic stainless steel substrate, the thermal shock testing conditions consist in: fast heating to 800°C (or 500°C) (10s) and water cooling without maintaining to maximum temperature. After 20 cycles to a maximum temperature of 800°C we noticed the appearance of pattern fine cracks, which is developed along the next 20 cycles but with no scorching. For a maximum temperature of the 500°C of the thermal shock, after 180 cycles we not observed the appearance of the scorches on the coats surface.
On the martensitic non-corrosive steel support (Z12CNDV12) it is deposited by plasma jet, tungste... more On the martensitic non-corrosive steel support (Z12CNDV12) it is deposited by plasma jet, tungsten carbide, in three different thicknesses. We determined the electrochemical potential of both the coating layer and the substrate for different concentrations of NaCl in a solution. The experimental results are mathematically processed. From each protective coating a 1, 2 and 3 degree polynomial fit were obtained. Also, the comparison between the three obtained thicknesses mathematical function is realized.
It is well-know that the numerous functions of use of materials can be realized at a high level o... more It is well-know that the numerous functions of use of materials can be realized at a high level of performance by using plasma jet coatings, with the reduction of the consumption of important strategic metals. These are determined by the excellent resilience to extreme temperatures, corrosion and wear of the coatings. This paper aims to characterize coating layers based on Al2O3 realized by plasma jet spray by examining its hardness, thermal shock resistance, traction resistance.
The work presents some researches regarding to utilization in cement industry of the sideritic re... more The work presents some researches regarding to utilization in cement industry of the sideritic residue, stored in the ponds near from Hunedoara. Thus, on the chemical and granulometric compositions is obtained a number of 10 recipes of clinker, and finally are presented an optimum recipe. The purpose of this researches was reused a manufactured residue, which momentary is stored on large ground surfaces. Through suggested variant are desired the rendition to natural area of this polluted surfaces, parallel with economic effect for reducing quantities of calcite and clay in clinkers production from the cement industry.
The paper presents the experimentations made in the laboratories of Faculties of Engineering from... more The paper presents the experimentations made in the laboratories of Faculties of Engineering from Hunedoara and also in the frame of Carpatcement Holding Deva laboratories, looking at the introduction of the sideritic residue along with the clinker, for obtain of cement. For suggested recipe, were determinate the specific surfaces, setting time, compression strength. Result obtained in the laboratory condition proven as the proposal is viable as much from economic and ecologic point of view, through the recycling of manufactured residue existing in very big amounts in approach of Hunedoara area.
EMAN 2019 – Economics & Management: How to Cope With Disrupted Times CONFERENCE PROCEEDINGS, 2019
Individuals live their lives under the forces of time and ignorance. Since the economy is dealing... more Individuals live their lives under the forces of time and ignorance. Since the economy is dealing with the study of a significant part of people’s lives, it was normal that aspects of it to be considered sooner or later. Our intention, when we started this paper, was to develop a certain apparatus of economic analysis, which unites several branches of the sciences that study the products of cooperation between people and to show how these products evolve depending on the expectations and the time horizon of individuals. The term “ignorance” has nothing pejorative in this context because it is largely the result of a rational choice of individuals. Limiting resources, and in particular time availability, causes people not to use all the information they might gather if they have at their disposal unlimited amounts of time and money. In addition, certain information, such as the tastes and wishes of others, is inaccessible to the individual from an economic point of view. The individu...
For the coats made by using the TiO2 powder (type Metco 102) on a martesitic stainless steel subs... more For the coats made by using the TiO2 powder (type Metco 102) on a martesitic stainless steel substrate, the thermal shock testing conditions consist in: fast heating to 800°C (or 500°C) (10s) and water cooling without maintaining to maximum temperature. After 20 cycles to a maximum temperature of 800°C we noticed the appearance of pattern fine cracks, which is developed along the next 20 cycles but with no scorching. For a maximum temperature of the 500°C of the thermal shock, after 180 cycles we not observed the appearance of the scorches on the coats surface.
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