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Indian Journal of Materials Science最新文献

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Review on Optical and Electrical Properties of Conducting Polymers 导电聚合物的光电性能研究进展
Indian Journal of Materials Science Pub Date : 2016-06-21 DOI: 10.1155/2016/5842763
M. Bajpai, R. Srivastava, R. Dhar, R. S. Tiwari
{"title":"Review on Optical and Electrical Properties of Conducting Polymers","authors":"M. Bajpai, R. Srivastava, R. Dhar, R. S. Tiwari","doi":"10.1155/2016/5842763","DOIUrl":"https://doi.org/10.1155/2016/5842763","url":null,"abstract":"We reviewed optical and electrical properties of conjugated polymers. The charge transport models to describe the hole and electron transport mechanism are also included in the electrical properties of conjugated polymers. The effect of optical and electrical properties after doping is also indexed in this paper.","PeriodicalId":13278,"journal":{"name":"Indian Journal of Materials Science","volume":"35 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2016-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89361813","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: 17
DFT Study on the Carrier Concentration and Temperature-Dependent Thermoelectric Properties of Antimony Selenide 硒化锑载流子浓度及温度相关热电性质的DFT研究
Indian Journal of Materials Science Pub Date : 2016-05-25 DOI: 10.1155/2016/7296847
A. Jayaraman, A. B. Kademane, Muralikrishna Molli
{"title":"DFT Study on the Carrier Concentration and Temperature-Dependent Thermoelectric Properties of Antimony Selenide","authors":"A. Jayaraman, A. B. Kademane, Muralikrishna Molli","doi":"10.1155/2016/7296847","DOIUrl":"https://doi.org/10.1155/2016/7296847","url":null,"abstract":"We present the thermoelectric properties of Antimony Selenide (Sb2Se3) obtained using first principles calculations. We investigated the electronic band structure using the FP-LAPW method within the sphere of the density functional theory. Thermoelectric properties were calculated using BoltzTrap code using the constant relaxation time () approximation at three different temperatures 300 K, 600 K, and 800 K. Seebeck coefficient () was found to decrease with increasing temperature, electrical conductivity () was almost constant in the entire temperature range, and electronic thermal conductivity () increased with increasing temperature. With increase in temperature decreased from 1870 μV/K (at 300 K) to 719 μV/K (at 800 K), electronic thermal conductivity increased from 1.56 × 1015 W/m K s (at 300 K) to 3.92 × 1015 W/m K s (at 800 K), and electrical conductivity decreased from 22 × 1019/Ω m s (at 300 K) to 20 × 1019/Ω m s (at 800 K). The thermoelectric properties were also calculated for different hole concentrations and the optimum concentration for a good thermoelectric performance over a large range of temperatures (from 300 K to 1000 K) was found for hole concentration around 1019 cm−3.","PeriodicalId":13278,"journal":{"name":"Indian Journal of Materials Science","volume":"78 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2016-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81317937","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: 8
Effect of Solvents on the Ultrasonic Velocity and Acoustic Parameters of Polyvinylidene Fluoride Solutions 溶剂对聚偏氟乙烯溶液超声声速及声学参数的影响
Indian Journal of Materials Science Pub Date : 2016-04-26 DOI: 10.1155/2016/9582582
S. S. Kulkarni, U. V. Khadke
{"title":"Effect of Solvents on the Ultrasonic Velocity and Acoustic Parameters of Polyvinylidene Fluoride Solutions","authors":"S. S. Kulkarni, U. V. Khadke","doi":"10.1155/2016/9582582","DOIUrl":"https://doi.org/10.1155/2016/9582582","url":null,"abstract":"Ultrasonic studies provide a wealth of information in understanding the molecular behavior and intermolecular interaction of polymer solvent mixtures. Attempts were made to measure ultrasonic velocity, density, and viscosity for the mixture of polyvinylidene fluoride (PVDF) in acetone and dimethylformamide (DMF) of various stoichiometric ratios at 300 K using crystal controlled ultrasonic interferometer (Mittal make), pyknometer (specific gravity bottle), and Ostwald viscometer, respectively. The acoustic parameters adiabatic compressibility (), intermolecular free path length (), acoustic impedance (), relative association (RA), ultrasonic attenuation (), and relaxation time () have been estimated using experimental data with well-known techniques. The variation of these acoustic parameters is explained in terms of solute-solvent molecular interaction in a polymer solution.","PeriodicalId":13278,"journal":{"name":"Indian Journal of Materials Science","volume":"91 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2016-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90507293","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: 13
Coalescing Aid Influences on Acrylic Latexes Property and Film Formation Process 聚结剂对丙烯酸乳液性能及成膜过程的影响
Indian Journal of Materials Science Pub Date : 2016-01-01 DOI: 10.1155/2016/1380791
Wang Yi, Zhonghua Chen, Yu Fei
{"title":"Coalescing Aid Influences on Acrylic Latexes Property and Film Formation Process","authors":"Wang Yi, Zhonghua Chen, Yu Fei","doi":"10.1155/2016/1380791","DOIUrl":"https://doi.org/10.1155/2016/1380791","url":null,"abstract":"The coalescing aid of propylene glycol phenyl ether (PPh) influences on the latexes system and its film formation process have been demonstrated in this paper. The latexes with different are synthesized by seeded semicontinuous emulsion polymerization. The PPh have a significant impact on the water evaporation stage, in which PPh decreased the water evaporation rate for a low latex system but accelerated the rate for a high latex. This result was quantified using Routh-Russel model which was a useful model for the prediction of the latex particle deformation mechanisms. The different amounts of PPh can change the latex particle deformation mechanisms. The TGA results show that the PPh still exist in the latexes films during drying. The microstructures of the latex film which dry under 70°C with the PPh for different time display that the PPh can accelerate the polymer molecules motion and the diffusion rate for the latex coalescence stage.","PeriodicalId":13278,"journal":{"name":"Indian Journal of Materials Science","volume":"3 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91320941","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: 2
Investigating the Relationship between Knitted Fabric Porosity and Light Permeability 针织物孔隙率与透光性关系的研究
Indian Journal of Materials Science Pub Date : 2016-01-01 DOI: 10.1155/2016/7536108
Manoj Kumar Imrith, R. Unmar, S. Rosunee
{"title":"Investigating the Relationship between Knitted Fabric Porosity and Light Permeability","authors":"Manoj Kumar Imrith, R. Unmar, S. Rosunee","doi":"10.1155/2016/7536108","DOIUrl":"https://doi.org/10.1155/2016/7536108","url":null,"abstract":"The present paper attempts to investigate the relationship between fabric porosity and light permeability of the knitted structures, namely, rib 1 × 1, rib 2 × 1, single jersey, and plain structure. The rationale is that pores (in a fabric) would allow light to pass through but at the same time provide a quantitative assessment of the UV light permeability of the knitted fabrics, an indication of the protective capacity of the fabrics against UV radiation. The porosity and corresponding light permeability of the knitted structures were measured after varying the following knitting parameters: stitch length, stitch density, and tension on the machine. Furthermore, this work has enabled the development of an apparatus that can measure the amount of light transmitted through the knitted fabrics. The results generated by the equipment were validated through the use of regression equations.","PeriodicalId":13278,"journal":{"name":"Indian Journal of Materials Science","volume":"11 1","pages":"1-12"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87196417","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: 5
Microstructure Evolution and Grain Growth Model of AZ31 Magnesium Alloy under Condition of Isothermal 等温条件下AZ31镁合金组织演变及晶粒长大模型
Indian Journal of Materials Science Pub Date : 2015-12-30 DOI: 10.1155/2015/897686
Zhongtang Wang, Ling-Yi Wang, Lizhi Liu
{"title":"Microstructure Evolution and Grain Growth Model of AZ31 Magnesium Alloy under Condition of Isothermal","authors":"Zhongtang Wang, Ling-Yi Wang, Lizhi Liu","doi":"10.1155/2015/897686","DOIUrl":"https://doi.org/10.1155/2015/897686","url":null,"abstract":"Microstructure evolution of AZ31 magnesium alloy in annealing process had been investigated by experiment study at heating temperature range of 150°C–450°C and holding time range of 15 min–60 min. The effects of heating temperature and holding time on grain growth had been analyzed. The results presented that the grain size tends to grow up with the increase of holding time at a certain temperature. At a certain holding time, the grain size increased firstly and then decreased at the heating temperature range of 150–250°C. And when heating temperature is higher than 250°C, the grain grows up gradually with the increase of heating temperature. The grain growth model of AZ31 Mg alloy has been established by regression based on the experimental data at temperature of 250–450°C, and the relative error between model calculation results and experimental results is less than 19.07%. Activation energy of grain growth of AZ31 magnesium alloy had been determined.","PeriodicalId":13278,"journal":{"name":"Indian Journal of Materials Science","volume":"10 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2015-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74492319","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: 2
Wear and Corrosion of Cast Al Alloy Piston with and without Brake Oil 使用和不使用刹车油的铸铝合金活塞的磨损和腐蚀
Indian Journal of Materials Science Pub Date : 2015-11-01 DOI: 10.1155/2015/763618
O. Ajibola, D. Oloruntoba
{"title":"Wear and Corrosion of Cast Al Alloy Piston with and without Brake Oil","authors":"O. Ajibola, D. Oloruntoba","doi":"10.1155/2015/763618","DOIUrl":"https://doi.org/10.1155/2015/763618","url":null,"abstract":"The effects of wear and corrosion of cast AA6061 aluminium alloy were studied with and without brake fluid using a wear jig while the corrosion rate was determined in brake fluid for 70 days under two experimental set-ups. The tests, yielded 0.00000123 g/mm2/min highest wear rate at 147000 wear cycles and 0.0334 mg/mm2/yr as the highest corrosion rate within the early 39th day of immersion in oil, the values being considered comparatively lower than those obtained for Al alloy in most common wet abrasion test and corrosion in aqueous solutions as previously reported in literature. The material loss rates to wear and corrosion were determined from the equations relating to wear and corrosion based on the ASTM designations. The results show that the combined actions of wear and corrosion contribute to the total loss of piston material immersed in brake oil. This is greater than either of their effects individually on cast Al alloy in the brake oil.","PeriodicalId":13278,"journal":{"name":"Indian Journal of Materials Science","volume":"52 1","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81424228","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: 10
Effect of MgFeSi Inoculant on Properties of Cast 6061 Al Alloy for Brake Master Piston Application MgFeSi孕育剂对铸造6061铝合金制动总活塞性能的影响
Indian Journal of Materials Science Pub Date : 2015-10-18 DOI: 10.1155/2015/756219
O. Ajibola, D. Oloruntoba
{"title":"Effect of MgFeSi Inoculant on Properties of Cast 6061 Al Alloy for Brake Master Piston Application","authors":"O. Ajibola, D. Oloruntoba","doi":"10.1155/2015/756219","DOIUrl":"https://doi.org/10.1155/2015/756219","url":null,"abstract":"The influence of varying amount of MgFeSi inoculant on properties of cast 6061 Al alloy for brake master piston application has been studied and reported in this paper. Cast samples were produced at three pouring temperatures (700, 750, and 800°C) with MgFeSi varied from 1 to 3%. Wear resistance tests were performed on cast alloy in brake oil. Wear resistance tests results were validated by nondestructive examinations using photomicroscopy, SEM, EDX, and XRD data. The addition of MgFeSi influenced both the mechanical (hardness, strength, and wear resistance) and metallurgical properties (microstructures) of the cast alloy. Al grains were more refined and yielded good strength properties. Inoculating the melt with MgFeSi forms insoluble compound particles and is responsible for grain refinement. The increased amount of MgFeSi from 1 to 3% improved the wear resistance of the cast piston under lubricating condition using brake oil.","PeriodicalId":13278,"journal":{"name":"Indian Journal of Materials Science","volume":"147 1","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2015-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91156333","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: 10
Synthesis, Characterization, and Investigation of Visible Light Photocatalytic Activity of C Doped TiO2/CdS Core-Shell Nanocomposite C掺杂TiO2/CdS核壳纳米复合材料的合成、表征及可见光催化活性研究
Indian Journal of Materials Science Pub Date : 2015-10-05 DOI: 10.1155/2015/690568
A. Lavand, Y. S. Malghe, Suraj H. Singh
{"title":"Synthesis, Characterization, and Investigation of Visible Light Photocatalytic Activity of C Doped TiO2/CdS Core-Shell Nanocomposite","authors":"A. Lavand, Y. S. Malghe, Suraj H. Singh","doi":"10.1155/2015/690568","DOIUrl":"https://doi.org/10.1155/2015/690568","url":null,"abstract":"Carbon (C) doped TiO2/CdS core-shell nanocomposite (C/TiO2/CdS) was synthesized using microemulsion method. Synthesized powder was characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), energy dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), and UV-visible spectrophotometery. TEM images reveal that C/TiO2/CdS core-shell heterostructure is successfully prepared with CdS as a core and C doped TiO2 as a shell. UV-visible absorption spectra show that CdS nanoparticles act as a sensitizer and effectively enhance the photoabsorption capacity of C/TiO2/CdS nanocomposite in visible region. Visible light photocatalytic activity of synthesized nanocomposite was evaluated for the degradation of methylene blue. C/TiO2/CdS core-shell nanocomposite exhibits better photocatalytic activity as compared to bare TiO2, CdS, CdS/TiO2, and C doped TiO2.","PeriodicalId":13278,"journal":{"name":"Indian Journal of Materials Science","volume":"19 1","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"2015-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81687773","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: 15
Thermoluminescence and Photoluminescence Study of Erbium Doped CaY2O4 Phosphor 掺铒CaY2O4荧光粉的热致发光和光致发光研究
Indian Journal of Materials Science Pub Date : 2015-09-30 DOI: 10.1155/2015/745052
V. Dubey, R. Tiwari, R. Tamrakar, Chandrabhushan Markande, G. Rathore, M. Pradhan
{"title":"Thermoluminescence and Photoluminescence Study of Erbium Doped CaY2O4 Phosphor","authors":"V. Dubey, R. Tiwari, R. Tamrakar, Chandrabhushan Markande, G. Rathore, M. Pradhan","doi":"10.1155/2015/745052","DOIUrl":"https://doi.org/10.1155/2015/745052","url":null,"abstract":"Phosphor doped with erbium ion with variable concentration (0.5–2 mol%) was synthesized by solid state reaction method. CaY2O4:Er3","PeriodicalId":13278,"journal":{"name":"Indian Journal of Materials Science","volume":"19 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2015-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82497619","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: 4
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