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Annealing Effect on Copper-Doped Sodium Borate Glasses (Na2O.4B2O3) 掺铜硼酸钠玻璃(Na2O.4B2O3)的退火效应
IF 0.2
Hungarian Journal of Industry and Chemistry Pub Date : 2023-05-26 DOI: 10.33927/hjic-2023-03
D. Aboutaleb, B. Safi
{"title":"Annealing Effect on Copper-Doped Sodium Borate Glasses (Na2O.4B2O3)","authors":"D. Aboutaleb, B. Safi","doi":"10.33927/hjic-2023-03","DOIUrl":"https://doi.org/10.33927/hjic-2023-03","url":null,"abstract":"The annealing effect of an alkali borate type glass below its softening point was investigated according to the Na2O-B2O3 binary system. The samples were doped by introducing different amounts of copper oxide (CuO). The properties of elaborate glasses before and after annealing were studied. X-ray diffraction (XRD) as well as optical and infrared spectroscopy were used in this study. The results obtained show that annealing, that is, a heat treatment process, affects the structure of this type of glass by redistributing its structural units and partially correcting any defects, thereby reinforcing the structure. It was noticed that the BO3 units were reformed while the number of BO4 ones decreased, leading to an increase in the coefficient of thermal expansion, a decrease in both the refractive index and optical dispersion, the weakening of mechanical properties as well as a reduction in thermal conductivity and electric permittivity.","PeriodicalId":43118,"journal":{"name":"Hungarian Journal of Industry and Chemistry","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48608492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Manufacturing of Large and Polished Ceramic Pistons by Cold Isostatic Pressing 冷等静压法生产大型抛光陶瓷活塞
IF 0.2
Hungarian Journal of Industry and Chemistry Pub Date : 2023-05-26 DOI: 10.33927/hjic-2023-05
Viktor Gerlei, Tibor Kránicz, T. Korim, M. Jakab
{"title":"Manufacturing of Large and Polished Ceramic Pistons by Cold Isostatic Pressing","authors":"Viktor Gerlei, Tibor Kránicz, T. Korim, M. Jakab","doi":"10.33927/hjic-2023-05","DOIUrl":"https://doi.org/10.33927/hjic-2023-05","url":null,"abstract":"This paper discusses the challenges involved in producing high-quality alumina ceramics, particularly when it comes to achieving a suitable degree of surface roughness and high accuracy. Alumina ceramics are widely used in various applications due to their exceptional properties, including high strength, wear resistance and chemical stability. The alumina ceramic pistons with the desired properties and performance were produced from commercially available raw materials. To improve the densification and mechanical properties of the sintered ceramics, an organic binder was used. The use of a diamond abrasive slurry for polishing was also studied, which has proven to be particularly effective in achieving a high degree of surface finish. The study aims to produce alumina-based pistons with a low level of surface roughness as well as discusses the techniques and methods used to achieve this goal. The results of this paper include the porosity, mechanical properties and microstructure of the alumina ceramics produced in addition to the effectiveness of the techniques and methods applied.","PeriodicalId":43118,"journal":{"name":"Hungarian Journal of Industry and Chemistry","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49659457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Laboratory Measurement of Rolling Resistance Coefficient under Different Conditions 不同条件下滚动阻力系数的实验室测量
IF 0.2
Hungarian Journal of Industry and Chemistry Pub Date : 2023-05-26 DOI: 10.33927/hjic-2023-04
S. Guba, Péter Kocsor, Bálint Vörös, B. Horváth, I. Szalai
{"title":"Laboratory Measurement of Rolling Resistance Coefficient under Different Conditions","authors":"S. Guba, Péter Kocsor, Bálint Vörös, B. Horváth, I. Szalai","doi":"10.33927/hjic-2023-04","DOIUrl":"https://doi.org/10.33927/hjic-2023-04","url":null,"abstract":"The aim of our research was to design and construct a measuring device that can determine the rolling resistance coefficient (RRC) under laboratory conditions. The measuring device has a drum arrangement, and the RRC was measured on two different model surfaces. The deceleration method was used to investigate the dependence of RRC on compression force, velocity, and surface temperature on steel and rubber surfaces. The measured RRC values (0.010 – 0.025) were similar in magnitude to the values characteristic for asphalt-covered roads. By increasing the model road surface temperature up to T = 60 ◦C the RCC dropped by ~13% compared to the values at T = 22 ◦C","PeriodicalId":43118,"journal":{"name":"Hungarian Journal of Industry and Chemistry","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69557800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Process Simulation of Hole Mandrelling in Steel Aircraft Parts 飞机钢制零件扩孔工艺仿真
IF 0.2
Hungarian Journal of Industry and Chemistry Pub Date : 2023-05-26 DOI: 10.33927/hjic-2023-01
I. Voronko, V. Voronko, Yuri Dyachenko, S. Shapar’
{"title":"Process Simulation of Hole Mandrelling in Steel Aircraft Parts","authors":"I. Voronko, V. Voronko, Yuri Dyachenko, S. Shapar’","doi":"10.33927/hjic-2023-01","DOIUrl":"https://doi.org/10.33927/hjic-2023-01","url":null,"abstract":"The processing technology of steel structural elements of aircraft parts is especially important since, if improperly processed, this material can be subjected to weathering, causing corrosion. Furthermore, special attention is paid to the walls of holes used for bolting. Since holes can become stress concentrators, the paper proposes to strengthen them by implementing the SPD (surface plastic deformation) method. The article describes the simulation of the mandrelling process, which is more efficient and less traumatic. Therefore, changes in the walls of holes as a result of deformation are shown, which occur after the process of hole mandrelling.","PeriodicalId":43118,"journal":{"name":"Hungarian Journal of Industry and Chemistry","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49578979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Behavior of Control and Inhibitive Polyaspartic Coatings Using Alkylammonium and Zinc Phosphate Corrosion Inhibitors in Soil 烷基铵和磷酸锌缓蚀剂在土壤中控制和抑制聚天冬氨酸涂层的行为
IF 0.2
Hungarian Journal of Industry and Chemistry Pub Date : 2022-12-22 DOI: 10.33927/hjic-2022-16
A. Elhoud, Tim Van Everbroeck
{"title":"Behavior of Control and Inhibitive Polyaspartic Coatings Using Alkylammonium and Zinc Phosphate Corrosion Inhibitors in Soil","authors":"A. Elhoud, Tim Van Everbroeck","doi":"10.33927/hjic-2022-16","DOIUrl":"https://doi.org/10.33927/hjic-2022-16","url":null,"abstract":"This study is part of an anti-corrosion coating development project at CHEMSYSTEMS. The corrosion performance was assessed through erosion, immersion and soil corrosion experiments. The erosion results have previously been published. This article discusses the impact of soil on control polyaspartic coatings used to protect concrete and the modified polyaspartic coating intended to protect underground steel substrates. The modified polyaspartic coating was boosted with a micaceous iron oxide barrier, a liquid alkylammonium corrosion inhibitor, a powdered zinc phosphate corrosion inhibitor and a novel hardener. The surface finish of the steel samples was of a milled and blasted nature (SA 2.5). The coating was applied directly to the metal without the application of a primer or second layer of coating. The average thickness of the coating was 220±10 µm as a direct-to-metal protection system. The experiments were conducted in soil at room temperature (RT) and 35°C over 30 days. The experimental results of the control polyaspartic coating loaded on steel substrates exhibited severe blistering. The polyaspartic coating dispersed with a liquid alkylammonium inhibitor also exhibited blistering, whereas the modified polyaspartic coating with a zinc phosphate corrosion inhibitor showed an adequate degree of resistance to the impact of soil under the evaluated conditions. The results confirmed that the presence of a zinc phosphate corrosion inhibitor in combination with a micaceous iron oxide barrier improved the resistance of the coating to the evaluated soils in which it was positioned and at the investigated temperatures.","PeriodicalId":43118,"journal":{"name":"Hungarian Journal of Industry and Chemistry","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48025223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of PC-FMEA Using Network Analysis 基于网络分析的PC-FMEA评价
IF 0.2
Hungarian Journal of Industry and Chemistry Pub Date : 2022-12-22 DOI: 10.33927/hjic-2022-20
Edina Ungvári, I. Gyurika
{"title":"Evaluation of PC-FMEA Using Network Analysis","authors":"Edina Ungvári, I. Gyurika","doi":"10.33927/hjic-2022-20","DOIUrl":"https://doi.org/10.33927/hjic-2022-20","url":null,"abstract":"PC-FMEA is a method that combines the pairwise comparison and basic FMEA (Failure Modes and Effects Analysis) methods. Using the pairwise comparison, which of the risks is more severe, common or noticeable can be determined. The results evaluated by the pairwise comparison can be modeled with networks, where the risks can be ranked according to the criteria using the PageRank and weighted in-degree values. Applying these two solutions together, a form of risk assessment can be created where risks are assessed by pairwise comparisons and the results analyzed using network research tools. The resulting method also provides two types of evaluations to rank the risks and also facilitates visualization. This study aimed to develop the application of PC-FMEA in network research.","PeriodicalId":43118,"journal":{"name":"Hungarian Journal of Industry and Chemistry","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42583998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Optimization of Bacillus Licheniformis DSM13 for Biosurfactant Production Using Response Surface Methodology 利用响应面法优化地衣芽孢杆菌DSM13生产生物表面活性剂
IF 0.2
Hungarian Journal of Industry and Chemistry Pub Date : 2022-12-22 DOI: 10.33927/hjic-2022-18
J. Sakiyo, Á. Németh
{"title":"Optimization of Bacillus Licheniformis DSM13 for Biosurfactant Production Using Response Surface Methodology","authors":"J. Sakiyo, Á. Németh","doi":"10.33927/hjic-2022-18","DOIUrl":"https://doi.org/10.33927/hjic-2022-18","url":null,"abstract":"Biosurfactants are surface-active compounds that can reduce surface tension in both aqueous solutions and hydrocarbon mixtures, which in recent times have become more valuable due to their lower toxicity and are generally referred to as green or organic surfactants. Such products are much better than chemical surfactants in terms of their enhanced biodegradation rates and the bioavailability of organic contaminants. Fungi, yeast and bacteria are mainly capable of producing microbial biosurfactants. Bacteria, especially Bacillus, are one of the most frequently applied and studied biosurfactant producers. This study investigated the kinetics of cell growth, the production of biosurfactants as well as the effect of and interactions between the (A) pH within the range of 4.1 to 9.8, (B) glucose concentration between 3.0 and 36.9 g/l, (C) surface tension and (D) emulsification index to maximize biosurfactant production. The analysis was carried out using a central composite design (CCD) model with four factors and five levels. The optimized medium (pH=8 and glucose concentration = 38 g/l) decreased the surface tension to 60 mN/m and increased the product yield up to 2.7 g/l.","PeriodicalId":43118,"journal":{"name":"Hungarian Journal of Industry and Chemistry","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45271910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Study on Adsorption of Essential Oils on Polylactic Acid Microparticles 聚乳酸微粒对精油吸附性能的研究
IF 0.2
Hungarian Journal of Industry and Chemistry Pub Date : 2022-12-22 DOI: 10.33927/hjic-2022-17
Lilla Virág, R. Bocsi, D. Pethő
{"title":"Study on Adsorption of Essential Oils on Polylactic Acid Microparticles","authors":"Lilla Virág, R. Bocsi, D. Pethő","doi":"10.33927/hjic-2022-17","DOIUrl":"https://doi.org/10.33927/hjic-2022-17","url":null,"abstract":"Polylactic acid (PLA) is a biodegradable polymer that is widely used in medical devices, drug delivery systems, fibers for packaging containers and textiles. However, given that interactions between the polymer and the materials in contact with it affect its applications, it is important to study its adsorption and diffusion properties. The adsorption capacity of different polylactic acid particles regarding different additives, e.g. essential oils (Thymus vulgaris, Melissa officinalis and Foeniculum vulgare), was investigated. PLA microparticles of various sizes were prepared by a solvent emulsification evaporation method. In this study, the specific adsorption of essential oils on PLA microparticles was also investigated, which is related to the solubility parameters of essential oils. The experiments were performed using three different solutions of essential oils and ethanol as a solvent. Two sets of PLA microparticles were prepared with different solvents using three different particle sizes. PLA microparticles exhibited different adsorption properties depending on the solvent that was used for their production. Samples of particles prepared using the solvent dichloromethane had a higher essential oil uptake than those prepared with chloroform. The uptake of essential oil solution did not change significantly (∼60%) by varying either the type of solvent used for PLA preparation or PLA particle size. The solubility of the essential oils affects the specific adsorption of essential oils on the microparticles. Among the components of the Hansen solubility parameters (HSPs), the polarity of essential oils is strongly related to adsorption.","PeriodicalId":43118,"journal":{"name":"Hungarian Journal of Industry and Chemistry","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42361613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Utilization of Agro-Wastes in Biohydrogen Fermentation by Various Microorganisms 农业废弃物在不同微生物生物氢发酵中的利用
IF 0.2
Hungarian Journal of Industry and Chemistry Pub Date : 2022-12-22 DOI: 10.33927/hjic-2022-19
K. Bélafi-Bakó, G. Tóth, P. Bakonyi, N. Nemestóthy
{"title":"Utilization of Agro-Wastes in Biohydrogen Fermentation by Various Microorganisms","authors":"K. Bélafi-Bakó, G. Tóth, P. Bakonyi, N. Nemestóthy","doi":"10.33927/hjic-2022-19","DOIUrl":"https://doi.org/10.33927/hjic-2022-19","url":null,"abstract":"Biohydrogen production based on agro-industrial wastes might be an attractive and effective technology for providing an energy source in the future. Dark fermentation is considered to be one of the most suitable biohydrogen formation processes. In this paper, various agro-industrial wastes as well as microorganisms applied for biohydrogen formation are reviewed.","PeriodicalId":43118,"journal":{"name":"Hungarian Journal of Industry and Chemistry","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47035550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Separation of Fumaric and Maleic Acid Crystals from the Industrial Wastewater of Maleic Anhydride Production 马来酸酐生产废水中富马酸和马来酸结晶的分离
IF 0.2
Hungarian Journal of Industry and Chemistry Pub Date : 2022-11-28 DOI: 10.33927/hjic-2022-10
Edisa Papraćanin, Abdel Đozić, Ermin Mujkić, Maida Hodžić, Irma Hodžić, Belmin Poljić, Ajla Ramić
{"title":"Separation of Fumaric and Maleic Acid Crystals from the Industrial Wastewater of Maleic Anhydride Production","authors":"Edisa Papraćanin, Abdel Đozić, Ermin Mujkić, Maida Hodžić, Irma Hodžić, Belmin Poljić, Ajla Ramić","doi":"10.33927/hjic-2022-10","DOIUrl":"https://doi.org/10.33927/hjic-2022-10","url":null,"abstract":"In this research, a physicochemical analysis of the industrial wastewater from a factory that produces maleic anhydride was performed. Based on the conducted analysis (pH, electrical conductivity, density of the liquid phase, boiling point of the waste suspension, chemical as well as biological oxygen demand, and dry matter), it can be concluded that the waste stream obtained at the outlet pipe from the plant resulting from the production of maleic anhydride requires appropriate treatments. Some of the parameters measured, e.g. pH (0.97±0.06), boiling point (106.8±1.3°C) and acidity, indicate the presence of organic acids such as fumaric and maleic acids, which are formed during the production of maleic anhydride. The possibility of extracting crystals by adding urea and thiourea followed by forced cooling in a heat exchanger was investigated. The most effective method was the addition of thiourea when the most significant amount of crystals was obtained, namely 17.29 wt%. The addition of thiourea in combination with forced cooling greatly facilitates the process of separating the solid and liquid phases of the waste suspension, which could later be adequately treated by physical, chemical or biological methods.","PeriodicalId":43118,"journal":{"name":"Hungarian Journal of Industry and Chemistry","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49579569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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