Sādhanā Pub Date : 2024-08-31 DOI: 10.1007/s12046-024-02586-w

Ushasta Aich, Hasibur Rahaman, Suman Nihar, Jisnu Basu

引用次数: 0

Zn–Ni–W alloy based protective coating for enhancement of deteriorative properties in medium carbon steel substrate 基于 Zn-Ni-W 合金的保护涂层，用于增强中碳钢基材的劣化性能

Sādhanā Pub Date : 2024-08-31 DOI: 10.1007/s12046-024-02593-x

M Selvambikai, S Karthikeyan, M A Mugesh, A Ashif Rahuman, S Prabhu

{"title":"Zn–Ni–W alloy based protective coating for enhancement of deteriorative properties in medium carbon steel substrate","authors":"M Selvambikai, S Karthikeyan, M A Mugesh, A Ashif Rahuman, S Prabhu","doi":"10.1007/s12046-024-02593-x","DOIUrl":"https://doi.org/10.1007/s12046-024-02593-x","url":null,"abstract":"Medium carbon steel is one of the most abundantly used materials globally due to its availability, low cost, and wide range of properties. On the other hand, medium carbon steel has a significant disadvantage in terms of corrosion and wear resistance. In this research work the medium carbon steel substrate is electroplated with ternary alloy Zn–Ni–W to improve the hardness and resistance to corrosion in the steel substrate. Providing a Zn–Ni–W alloy sacrificial thin layers with a trace amount of W on the surface of a mild steel substrate improves its corrosion and wear resistance. The electrolyte composition is optimized in such a way that the coating is rich in Zn which makes it a sacrificial type coating. The coating is done in an acidic sulfate bath with current density and pH of 1 A/dm2 and 5 respectively. The electrodeposition process is carried out at two different temperatures 55 °C and 70 °C with a deposition time of 30 min respectively. Surface morphology, chemical content, phase structure, and the thickness of these coatings are studied and compared using SEM, EDS, and XRD. Corrosion and wear behavior of Zn–Ni–W alloy coating has been done with the help of Electrochemical impedance spectroscopy (EIS). In conclusion, EIS results reveal notable characteristics for the Zn–Ni–W sample coated at 70 °C. The thin film exhibited a low corrosion rate and corrosion current, indicating a enhanced resistance against corrosion. Furthermore, the high polarization resistance value emphasizes the film's effectiveness in inhibiting corrosion processes. These findings collectively emphasize the favorable corrosion-resistant properties of the Zn–Ni–W coating deposited at 70 °C.","PeriodicalId":21498,"journal":{"name":"Sādhanā","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207760","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

Investigation of microstructural and electrochemical behavior of chromized-doped layers with variant magnesium concentrations 不同镁浓度铬化掺杂层的微观结构和电化学行为研究

Sādhanā Pub Date : 2024-08-29 DOI: 10.1007/s12046-024-02573-1

Sarra Djemmah, Michel Voué, Youcef Madi, Djilali Allou, Ahmed Haddad, Hamida Bouchafaa

{"title":"Investigation of microstructural and electrochemical behavior of chromized-doped layers with variant magnesium concentrations","authors":"Sarra Djemmah, Michel Voué, Youcef Madi, Djilali Allou, Ahmed Haddad, Hamida Bouchafaa","doi":"10.1007/s12046-024-02573-1","DOIUrl":"https://doi.org/10.1007/s12046-024-02573-1","url":null,"abstract":"This study provides an innovative approach about chromized-doped layers by discovering the optimal proportion of Mg (1 wt.%, 2 wt.%, and 3 wt.%) used as doping elements in order to enhance diffusion and stabilize the formed chromium oxide during the diffusion process. Our main objective is to evaluate the effect of Mg doping on the microstructural and the electrochemical behavior of the doped layer, systematically evaluating the impact of simultaneous variation of NH4Cl activator. The chromized-doped layers were analyzed by X-ray diffraction (XRD) and a scanning electron microscopy (SEM) equipped with EDX analysis. The doped layers were tested in 3.5% NaCl solution, and then were characterized by electron probe micro-analyzer (EPMA). The results revealed that doping contributed to the improvement of chromium diffusion for all the layers (≥ 96% Cr), stabilizing chromium oxide by forming a more stable oxide (MgCr2O4). However, Cr-Mg/1 wt.% showed the most homogenous crystalline structure and topography compared to the other layers, with the most insignificant defects. The Cr-Mg/1 wt.% presented an excellent corrosion resistance in the 3.5% NaCl solution, where its surface did not suffer any type of corrosion or damages. In addition, the balanced value of the activator (NH4Cl) relative to the other doped layers may play a significant role. As a result, the Cr-Mg/1 wt.% (using 4 wt.% NH4Cl) could be a robust and innovative surface, paving the way for new possibilities in the field of chromizing coatings.","PeriodicalId":21498,"journal":{"name":"Sādhanā","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207761","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

Risk assessment of metal contamination in wastewater drains of River Ghaggar in Punjab (India) 印度旁遮普省加加尔河废水排水沟金属污染风险评估

Sādhanā Pub Date : 2024-08-24 DOI: 10.1007/s12046-024-02587-9

Harneet Kaur, Amritpal Singh Kaleka, Anita Rajor

{"title":"Risk assessment of metal contamination in wastewater drains of River Ghaggar in Punjab (India)","authors":"Harneet Kaur, Amritpal Singh Kaleka, Anita Rajor","doi":"10.1007/s12046-024-02587-9","DOIUrl":"https://doi.org/10.1007/s12046-024-02587-9","url":null,"abstract":"Heavy metal contamination in surface water is a worldwide concern. Being the primary source of river pollution, the wastewater drains bring agricultural and domestic waste into the rivers. The present study was carried out to evaluate levels of heavy metals from wastewater drains of River Ghaggar in Punjab (India). The water samples were collected in five different seasons to carry out this work. The concentration of five metals (lead, cadmium, iron, aluminium, and nickel) was determined through Microwave Plasma-Atomic Emission Spectroscopy (MP-AES) technique. The data were interpreted through various environmental and human health risk assessments. The results of the current study revealed that lead, iron, and aluminium exceeded the permissible limit of the Central Pollution Control Board (India). Pollution indices such as the heavy metal pollution index (HPI), heavy metal evaluation index (HEI), water pollution index (WPI), and degree of contamination (Cd), suggested enormous heavy metal contamination in the study area. Human health risk assessment also revealed that people dwelling near these drains are highly prone to cancer disease and hazard quotients were observed above the threshold limit that poses high non-carcinogenic risks. Based on the current study, recommendations are made for water quality improvement in the wastewater drains of Punjab. These drains are further responsible for enhancing pollution in the main rivers in the State of Punjab and heavy metal pollution also poses several environmental and health risks. The compiled data during the present study provides a baseline model that can be helpful in resource management for government authorities of Punjab state.","PeriodicalId":21498,"journal":{"name":"Sādhanā","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207763","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

3D biomechanical model that can perform dynamic analysis of the upper extremity and L5/S1 joints without the use of force sensor 三维生物力学模型，无需使用力传感器即可对上肢和 L5/S1 关节进行动态分析

Sādhanā Pub Date : 2024-08-24 DOI: 10.1007/s12046-024-02590-0

MİTHAT Yanikören, Sezcan Yilmaz, Ömer Gündoğdu

引用次数: 0

Effect of annealing temperature on microstructure and memory properties of Fe-Mn-Si-Cr-Ni alloy prepared by additive manufacturing 退火温度对增材制造法制备的铁-锰-硅-铬-镍合金微观结构和记忆特性的影响

Sādhanā Pub Date : 2024-08-22 DOI: 10.1007/s12046-024-02561-5

Xiaoqin Yin, Laidong Song, Jian Zhu, Hongyu Wang, Qin Zhang

{"title":"Effect of annealing temperature on microstructure and memory properties of Fe-Mn-Si-Cr-Ni alloy prepared by additive manufacturing","authors":"Xiaoqin Yin, Laidong Song, Jian Zhu, Hongyu Wang, Qin Zhang","doi":"10.1007/s12046-024-02561-5","DOIUrl":"https://doi.org/10.1007/s12046-024-02561-5","url":null,"abstract":"The influence of annealing treatments at 600°C, 750°C, and 900°C on the alloy structure and memory properties was investigated in this study using a powder-core wire fusion-deposited Fe-14Mn-6Si-9Cr-5Ni alloy, accompanied by a preliminary analysis of the effects of annealing temperature. The results show that compared with the alloy annealed at 600°C, the alloy annealed at 750°C has less crossover of cooling martensite, resulting in improved ordering of stress-induced martensite during pre-deformation, and consequently, enhanced memory properties. At 900°C, ferrite almost completely decomposed, promoting martensitic growth through the crystal, which sharply decreased the memory properties, only slightly better than those of the unannealed alloy. It can be seen that annealing at the appropriate temperature can regulate the morphology and amount of cooling martensite in the additively manufactured Fe-Mn-Si-Cr-Ni alloy, thus improving the memory properties. However, excessively high annealing temperatures can cause excessive decomposition or even disappearance of δ-ferrite, which stabilizes the grain boundaries, thus adversely affecting the memory properties of the alloy.","PeriodicalId":21498,"journal":{"name":"Sādhanā","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207764","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

Assessing feasibility of peanut shell powder/linear low-density polyethylene for rotational moulding process 评估花生壳粉/线性低密度聚乙烯用于滚塑工艺的可行性

Sādhanā Pub Date : 2024-08-22 DOI: 10.1007/s12046-024-02591-z

Prashant Khanna, P L Ramkumar

{"title":"Assessing feasibility of peanut shell powder/linear low-density polyethylene for rotational moulding process","authors":"Prashant Khanna, P L Ramkumar","doi":"10.1007/s12046-024-02591-z","DOIUrl":"https://doi.org/10.1007/s12046-024-02591-z","url":null,"abstract":"A polymer processing method called rotational moulding is utilised to make hollow things without tension. Despite being the resin matrix of choice for rotational moulding, linear low-density polyethylene (LLDPE) performs only moderately in areas where sturdiness is required. In order to maintain the necessary strength, fibres might fill the gap. A variety of testing methods, including FTIR, particle size distribution, bulk density, MFI, DSC, and TGA, were used to support the requirement of processability for rotational moulding in the current study. Peanut shell powder (PSP) was combined with the LLDPE at amounts varying from 2 to 20%. The importance of both materials’ peaks can be seen in FTIR results, which suggested a range of 8% to 18% PSP in LLDPE. Particle size distribution and Bulk density measurement indicated that blends above 14% PSP are not recommended for rotational moulding. Based on MFI data, it was determined that PSP blends of 14% and above have values lower than 3 g/10min which is not suitable in terms of sufficient flow ability in rotational moulding. The inclusion of PSP was found to increase the blend’s crystallinity by 6.6% for 12% PSP blend. As per DSC and TGA data, adding peanut shell powder to LLDPE does not significantly alter the processing temperature range as compared to neat LLDPE, making rotational moulding appropriate for blends containing 8% to 12% PSP.","PeriodicalId":21498,"journal":{"name":"Sādhanā","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207762","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

Quorum and non-quorum based hierarchical multi-authority access control scheme for secure data sharing in cloud based environment 基于法定人数和非法定人数的分层多授权访问控制方案，实现云环境中的安全数据共享

Sādhanā Pub Date : 2024-08-17 DOI: 10.1007/s12046-024-02580-2

Smita Athanere Parte, Ramesh Thakur

引用次数: 0

Heterogeneous truck fleet optimization 异构卡车车队优化

Sādhanā Pub Date : 2024-08-14 DOI: 10.1007/s12046-024-02578-w

Dev Mishra, Rony Mitra

引用次数: 0

Force modeling and experimental investigations on machinability of SDSS 2507 under dry turning conditions using CVD TiCN-Al2O3 coated tools 使用 CVD TiCN-Al2O3 涂层刀具对干车削条件下 SDSS 2507 的可加工性进行力建模和实验研究

Sādhanā Pub Date : 2024-08-14 DOI: 10.1007/s12046-024-02585-x

T P SHAFEEQUE, ALLAN GEORGE, JOSE MATHEW, BASIL KURIACHEN

{"title":"Force modeling and experimental investigations on machinability of SDSS 2507 under dry turning conditions using CVD TiCN-Al2O3 coated tools","authors":"T P SHAFEEQUE, ALLAN GEORGE, JOSE MATHEW, BASIL KURIACHEN","doi":"10.1007/s12046-024-02585-x","DOIUrl":"https://doi.org/10.1007/s12046-024-02585-x","url":null,"abstract":"Super Duplex Stainless Steels (SDSS), in spite of their numerous commercial applications is considered to be extremely difficult to machine owing to its poor thermal conductivity, severe chemical affinity, and work hardening nature. Several studies have analysed the possibility of adopting conventional lubrication/cooling methods and coating techniques to address the machinability-related challenges of the alloy. However, limited studies have explored the use of multi-layered coatings to enhance the tool life properties while machining the alloy. Hence, this work intends to investigate the impact of using CVD TiCN-Al2O3 coated tools to analyse the significance of parameters like speed, feed rate, and depth of cut on the machinability aspects of SDSS 2507 in dry turning conditions. The experimentation analysis revealed that while speed, feed rate, and depth of cut had a significant impact on influencing the tool wear characteristics, surface roughness values were impacted by only feed rate values. Similarly, feed rate, depth of cut, and interaction effects between these factors were noted to have a considerable influence on the cutting forces. Meanwhile, the study also focuses on developing an analytical model to predict the cutting forces that consider the sticking-sliding effects by incorporating the chip groove area across the machining interface. The predicted cutting force values were observed to be in close agreement with the experimental results. The error values were noted to be below 15% in the majority of the cases, which confirms the significance of the predicted model.","PeriodicalId":21498,"journal":{"name":"Sādhanā","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207766","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

Sādhanā最新文献