Journal of Mineral and Material Science (JMMS)最新文献_第4页

A Wear Sensor Based on Nanocrystalline Diamond Multilayer Films: A Mini Review 基于纳米晶金刚石多层膜的磨损传感器研究进展

Journal of Mineral and Material Science (JMMS) Pub Date : 2022-07-25 DOI: 10.54026/jmms/1040

Xin Chen

引用次数: 0

The Influence of the Different Gain Material on the Loss Compensation of Hybrid Plasmonic Waveguide 不同增益材料对混合等离子波导损耗补偿的影响

Journal of Mineral and Material Science (JMMS) Pub Date : 2022-07-18 DOI: 10.54026/jmms/1039

P. Cavaliere

{"title":"The Influence of the Different Gain Material on the Loss Compensation of Hybrid Plasmonic Waveguide","authors":"P. Cavaliere","doi":"10.54026/jmms/1039","DOIUrl":"https://doi.org/10.54026/jmms/1039","url":null,"abstract":"The influence of different gain materials and waveguide parameters on propagation properties are analyzed in detail. In this paper, three materials including Al2 O3 , Si3 N4 , and Polymethylmethacrylate (PMMA) as low index materials are introduced instead of SiO2 which is used in many experiments. The results obtained via simulations showed that by increasing the width of metal, field confinement increased and for widths larger than 450 nm the filed profile was completely confined in below the metal (zone I). In addition to, simulation results showed that Al2 O3 and Si3 N4 are more efficient than SiO2 whereas PMMA is completely similar to SiO2 in loss compensation. It was attributed to the fact that the refractive index of PMMA is close to the refractive index of SiO2 . Moreover, the effect of InGaAsP as high index gain material instead of Si is analyzed. In this case, InGaAsP also reveals a loss compensation effect similar to Si due to their close refractive indexes. Therefore, the configuration with new different gain materials potentially offers an appealing solution to provide lossless light transport via low compensation gain, hence opening venues for ultra-compact active plasmonic devices.","PeriodicalId":199420,"journal":{"name":"Journal of Mineral and Material Science (JMMS)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115301814","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

Characterization and Application of Nigerian Clay Raw Resources for Porcelain Formulation and Manufacture 尼日利亚粘土制瓷原料资源的表征及应用

Journal of Mineral and Material Science (JMMS) Pub Date : 2022-06-22 DOI: 10.54026/jmms/1036

Inyiama Fidelis Chidozie

引用次数: 0

Electrochemical Surface Treatment of Ni–Cu Alloy in a Deep Eutectic Solvent to form High Performance Electrocatalysts for Hydrogen Production Ni-Cu合金在深共晶溶剂中的电化学表面处理制备高性能制氢电催化剂

Journal of Mineral and Material Science (JMMS) Pub Date : 2022-06-18 DOI: 10.54026/jmms/1037

V. Protsenko

引用次数: 0

Conductive Natural Rubber Composites Based on Carbon Nanotubes and its Hybrid Filler: A Short Review 基于碳纳米管及其杂化填料的导电天然橡胶复合材料研究进展

Journal of Mineral and Material Science (JMMS) Pub Date : 2022-04-26 DOI: 10.54026/jmms/1035

C. Nakason

{"title":"Conductive Natural Rubber Composites Based on Carbon Nanotubes and its Hybrid Filler: A Short Review","authors":"C. Nakason","doi":"10.54026/jmms/1035","DOIUrl":"https://doi.org/10.54026/jmms/1035","url":null,"abstract":"Natural Rubber (NR) composites are attractive novel materials due to being high molecular weight hydrophobic polymers with good elasticity and flexibility together with other important properties [1]. NR composites with various types of reinforcing fillers have been widely used in many industrial applications including tires, sports articles, sealing materials, and dairy rubber items [2]. NR is intrinsically insulator by nature of their molecular characteristics. However, conductive rubber materials are important in many industrial applications including computing, military, medical devices, and telecom sector. Also, conductive rubber gaskets are used in applications where an environmental seal is required and the material must possess moderate to excellent shielding effectiveness. Conductive rubber composites have been developed by adding electrically conductive fillers into the insulating rubber matrix. In recent years, a great deal of attention has been paid to Carbon Nanotubes (CNT). The CNT typically consists of rolled-up graphite sheets built from sp2 hybridized carbon units, which contain one valence electron that is capable of moving around the CNT surfaces. This influences on enhancement of thermal and electrical conductivities [3]. Therefore, CNT has been extensively studied in rubber nanocomposites due to their unique structure and properties [4]. The CNT networks disperse in rubber matrix typically act as electrically conducting pathways to provide electrical conductivity of rubber composites [1]. Therefore, good dispersion of CNT particles in rubber matrix contributes to significant improvement of various mechanical properties including tensile strength, and tensile modulus [5]. The CNT networks in NR matrix with very low percolation threshold concentrations (eg, about 0.086 vol%) with high electrical conductivity and dielectric constant can be prepared [6].","PeriodicalId":199420,"journal":{"name":"Journal of Mineral and Material Science (JMMS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128287277","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

The Important Role of Biochar-Mineral Components in Adsorption Applications 生物炭矿物组分在吸附应用中的重要作用

Journal of Mineral and Material Science (JMMS) Pub Date : 2022-03-15 DOI: 10.54026/jmms/1034

T. Seçkin

{"title":"The Important Role of Biochar-Mineral Components in Adsorption Applications","authors":"T. Seçkin","doi":"10.54026/jmms/1034","DOIUrl":"https://doi.org/10.54026/jmms/1034","url":null,"abstract":"Biochar consisting of both carbon and mineral fractions is a porous carbonaceous material with a large specific surface area produced by the pyrolysis of biomass in closed containers, in an oxygen-free or limited oxygen environment [1]. Biochar, sometimes called agrichar, is obtained from the thermal decomposition of a wide variety of carbon-rich biomass materials such as grasses, hard and soft woods, and agricultural and forest residues [2]. Although biochar is generally used for improving soil fertility, increasing soil nutrient levels and water holding capacity, and reducing greenhouse gas emissions through carbon sequestration, it is suitable for adsorption of both organic (antibiotics, pesticides, dyes) and inorganic pollutants (nutrients, heavy metals). It has been used as a costly adsorbent [3-6]. Lately it has been demonsrated that biochar with minerals such as alkaline or earth alkaline metals have enormous effect on the final properties of the materials. Clay minerals are widely applied in agriculture and industrial engineering. A few of the important physical and chemical properties that make clay minerals valuable are particle size, surface chemistry, and surface area [7]. The negatively charged layers in the clay mineral are balanced by the hydrated exchangeable cations (Na+, Ca2+, Mg2+) in the interlayer space [8]. Clay minerals have a great potential to absorb various pollutants such as heavy metals, dyes and organic compounds through the cation exchange mechanism due to their high surface area and high ion exchange capacity [9,10]. It has been observed that biochar is less effective in removing pollutants from the aqueous medium by adsorption, compared to activated carbon, due to the characteristics of the extraction processes, its relatively low surface area and adsorption capacity [11]. Therefore, it has been observed that biochar composites prepared by impregnating biochar with specific materials such as clay minerals have been successfully used for the adsorption of organic and inorganic pollutants from water [6,12-14].","PeriodicalId":199420,"journal":{"name":"Journal of Mineral and Material Science (JMMS)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121901871","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

Effect of SiO2 /TiO2 Ratio on the Mechanical Behaviour at High Temperature of Refractory Bauxites SiO2 /TiO2配比对难熔铝土矿高温力学行为的影响

Journal of Mineral and Material Science (JMMS) Pub Date : 2022-02-14 DOI: 10.54026/jmms/1033

Caballero A

引用次数: 0

Effect of Cement Fineness on the Penetrability of CEM IV/B Based Cement Grouts 水泥细度对CEM IV/B基水泥浆液渗透性的影响

Journal of Mineral and Material Science (JMMS) Pub Date : 2022-02-10 DOI: 10.54026/jmms/1032

Christodoulou Dimitrios

{"title":"Effect of Cement Fineness on the Penetrability of CEM IV/B Based Cement Grouts","authors":"Christodoulou Dimitrios","doi":"10.54026/jmms/1032","DOIUrl":"https://doi.org/10.54026/jmms/1032","url":null,"abstract":"Grouting is a common technical method with many applications, e.g. it is used for soil stabilization and strengthening, for reduction for water ingress to underground facilities or of the water loss through a dam foundation, etc. Grouts comprise several constituents, which are combined in many ways depending on the in-situ conditions and the outcome desired. The use of very fine cement grouts for injections into fine-to-medium sands has been proposed to circumvent problems associated with the permanence and toxicity of chemical grouts and the inability of ordinary cement grouts to permeate soil formations finer than coarse sand. A laboratory investigation was conducted in order to evaluate the penetrability of cement suspensions. Four gradations from CEM IV/B (according to EN 197-1) type of cement were used having nominal maximum grain sizes of 100 μm, 40 μm, 20 μm and 10 μm. Suspension properties with water-to-cement (W/C) ratios of 1:1, 2:1 and 3:1 by weight, were determined in terms of apparent viscosity. Penetrability was evaluated by conducting one-dimensional injections into four different, clean sands using a specially constructed device. Penetrability of cement suspensions increases with increasing cement fineness and water-to-cement (W/C) ratio. Microfine cement suspensions with water-to-cement (W/C) ratios of 2:1 and 3:1 can penetrate into medium-to-fine sands.","PeriodicalId":199420,"journal":{"name":"Journal of Mineral and Material Science (JMMS)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134027058","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

The Coal Industry in Australia and the East of Russia: A Lot in Common, But There Are Differences 澳大利亚和俄罗斯东部的煤炭工业:有很多共同点，但也有差异

Journal of Mineral and Material Science (JMMS) Pub Date : 2022-02-01 DOI: 10.54026/jmms/1031

Ya V Kryukov

引用次数: 0

Rock Fragmentation Evaluation towards Blast-To-Mill Concept of Blast Optimization in Hard Rock Mines 针对硬岩矿山爆破优化概念的破岩度评价

Journal of Mineral and Material Science (JMMS) Pub Date : 2021-12-03 DOI: 10.54026/jmms/1030

Bright Oppong Afum

{"title":"Rock Fragmentation Evaluation towards Blast-To-Mill Concept of Blast Optimization in Hard Rock Mines","authors":"Bright Oppong Afum","doi":"10.54026/jmms/1030","DOIUrl":"https://doi.org/10.54026/jmms/1030","url":null,"abstract":"Traditional blast optimisation studies ensure efficient mining operation but ignore potential impact of blasting on primary crushing. The performance of the primary crusher is key to the ore beneficiation process. Optimisation studies conducted through the mining operations to the comminution circuit is vital to the mine-to-mill concepts in the mining industry. In this approach, an innovative approach to the assessment of in-situ blasting is proposed and evaluated. This approach focuses on the acceptability of rock fragments on the Run-of-Mine (ROM) pad as opposed to the pits. Fragmentation analysis was conducted in the pit and on the ROM pad. A correlation efficiency of 0.92 was realized between the measured rock fragments in the pit and that on the ROM pad. About 10% of the rock fragments in the pit were classified as boulders while about 30% of the same rock fragments deposited on the ROM pad were classified as boulders. However, about 30% of the rockpile on the ROM pad was estimated to be lower than the Close Side Setting (CSS) of the primary crusher. It is recommended that future research evaluates the energy consumption and its related cost at the primary crusher in comparison to in-pit fragmentation and mucking cost performance.","PeriodicalId":199420,"journal":{"name":"Journal of Mineral and Material Science (JMMS)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132996930","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