Revue De Metallurgie-cahiers D Informations Techniques最新文献_第7页

Preliminary study on the preparation of graphene from coke with a combined chemical and physical routine 化学与物理相结合法制备焦炭石墨烯的初步研究

Revue De Metallurgie-cahiers D Informations Techniques Pub Date : 2020-01-01 DOI: 10.1051/metal/2020060

Minmin Sun, Jianliang Zhang, Minghao Li, W. Xiong, Kejiang Li, Hongtao Li

{"title":"Preliminary study on the preparation of graphene from coke with a combined chemical and physical routine","authors":"Minmin Sun, Jianliang Zhang, Minghao Li, W. Xiong, Kejiang Li, Hongtao Li","doi":"10.1051/metal/2020060","DOIUrl":"https://doi.org/10.1051/metal/2020060","url":null,"abstract":"As a revolutionary material with optical, electrical and mechanical properties, graphene has high production costs in terms of materials science, micro-nano processing, energy, biomedicine and drug delivery. To explore the low-cost materials for the synthesis of carbon nanomaterials, a method for the affordable and facile fabrication by metallurgical coke fine was demonstrated. The demineralized coke ultrafine powder (< 10 µm) was oxidized, and then treated with a combination of thermal exfoliation and solvent exfoliation. The resulting carbon powder were characterized with microscopic morphology, the defects and type of carbon and the carbon structural order by Transmission Electron Microscopy (TEM), Fourier Transform Infrared Spectroscopy (FTIR), X-ray Photoemission Spectroscopy (XPS), Raman Spectroscopy and X-ray Diffraction (XRD). The graphene prepared by chemical-physical routine with demineralized metallurgical coke superfine powder exhibits similar characteristics to those prepared by graphite traditionally, which provides an economical and environmentally friendly method for the preparation of graphene materials.","PeriodicalId":21337,"journal":{"name":"Revue De Metallurgie-cahiers D Informations Techniques","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78782458","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

Characterization of blast furnace flue dust – a multi analytical techniques approach 高炉烟道粉尘的表征——多分析技术方法

Revue De Metallurgie-cahiers D Informations Techniques Pub Date : 2020-01-01 DOI: 10.1051/metal/2020059

Shrenivas S. Ashrit, S. Sarkar, Rashmi Singh, Sundeep Z. Yadav, Ravikrishna V. Chatti

引用次数: 1

LOGIT MODEL AND PREDICTION QUALITY OF CONTINUOUSLY CAST SLABS 连铸板坯的Logit模型及质量预测

Revue De Metallurgie-cahiers D Informations Techniques Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3642

Z. Franěk, R. Pyszko

引用次数: 0

MATHEMATICAL MODELING OF PHYSICAL PROPERTIES OF ANISOTROPIC MATERIALS 各向异性材料物理性质的数学建模

Revue De Metallurgie-cahiers D Informations Techniques Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3500

Yu. A. Belokon’, A. Yavtushenko, V. Protsenko, Y. Bondarenko, A. Cheilytko

{"title":"MATHEMATICAL MODELING OF PHYSICAL PROPERTIES OF ANISOTROPIC MATERIALS","authors":"Yu. A. Belokon’, A. Yavtushenko, V. Protsenko, Y. Bondarenko, A. Cheilytko","doi":"10.37904/metal.2020.3500","DOIUrl":"https://doi.org/10.37904/metal.2020.3500","url":null,"abstract":"The problem of selecting a material with an extreme value of its performance using its anisotropy is considered. It is important for specialists of metallurgical profile to be able not only to select the material for realization of the set engineering task, but also to use its anisotropy, and to be able to determine the orientation of the material with the extreme value of its performance. Mathematical modeling and computer analysis of anisotropy of tensor coefficients using the example of thermal expansion coefficient have been performed. Since thermal expansion, like any tensor physical property of crystals, is a continuous function of direction, then in order to determine the directions with a zero value of thermal expansion, the following ratio must be satisfied: αn = 0. This can only happen if the main components of the thermal expansion tensor have different symbols. The Mathcad Prime 6 software complex has defined a function that performs the calculation of the value of thermal expansion coefficients in crystals in any direction, calculated the value and position of extremums of thermal expansion coefficients, and constructed an index surface, a stereographic projection of the index surface and the cross section of the index surface of thermal expansion coefficients X1X3. The lowest and highest values of the thermal expansion coefficient of the crystal have been found.","PeriodicalId":21337,"journal":{"name":"Revue De Metallurgie-cahiers D Informations Techniques","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91306370","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

EIS study of the corrosion behavior of an organic coating applied on Algerian oil tanker 阿尔及利亚油轮用有机涂层腐蚀行为的EIS研究

Revue De Metallurgie-cahiers D Informations Techniques Pub Date : 2020-01-01 DOI: 10.1051/metal/2020064

N. Hammouda, K. Belmokre

引用次数: 1

EVALUATION OF THE FORMABILITY OF Al-ALLOY EN-AA 6000 T6 en - aa6000t6铝合金成形性能的评价

Revue De Metallurgie-cahiers D Informations Techniques Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3470

A. Schrek, A. Brusilová, P. Sejč, M. Pokusová

引用次数: 0

RESEARCH OF WEAR RESISTANCE OF CHROME DIAMOND COATING 铬金刚石涂层的耐磨性研究

Revue De Metallurgie-cahiers D Informations Techniques Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3556

J. Averina, G. Kalyakina, V. Boldyrev, A. G. Cherednichenko, E. Rybina

引用次数: 0

using advanced computational methods for power grid analysis in metallurgical industry 运用先进的计算方法进行冶金工业电网分析

Revue De Metallurgie-cahiers D Informations Techniques Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3634

Ondřej Grycz, Vít Pasker, Robert Hlavica, Pavel Foretník

引用次数: 0

SUCCESSFUL USE OF FLAMELESS OXYFUEL IN STEEL REHEATING 无焰含氧燃料在钢材再加热中的成功应用

Revue De Metallurgie-cahiers D Informations Techniques Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3460

J. Schéele, Vladimír Zilka

{"title":"SUCCESSFUL USE OF FLAMELESS OXYFUEL IN STEEL REHEATING","authors":"J. Schéele, Vladimír Zilka","doi":"10.37904/metal.2020.3460","DOIUrl":"https://doi.org/10.37904/metal.2020.3460","url":null,"abstract":"Using oxyfuel combustion in steel reheating provides higher throughput and substantial fuel savings. Accordingly, oxyfuel has many benefits, but also some drawbacks like hot spots in furnaces and thermal NOx generation. However, by making the combustion “Flameless” by creating a ‘volume combustion’, these issues can be overcome, and additional advantages can be achieved. This paper describes different solutions, both fully flameless and semi flameless, which have been developed and implemented in steel reheating and annealing furnaces. Over the past three decades, Linde has made more than 160 oxyfuel installations in all types of reheating furnaces, both batch and continuous, and for production of all different steel grades. Since 2003, focus has been on using Flameless Oxyfuel, hitherto resulting in 112 successful installations, 90 of these operating fully with 100 % Flameless Oxyfuel. This paper describes results from these installations, which include fuel savings of up to 60 %, increased throughput by up to 50 %, substantial reductions of CO2 and NOx emissions, much improved temperature uniformity of the heated steel, reduction of scale losses by up to 50 %. Cases with conversion from air-fuel to Flameless Oxyfuel will are described. These examples comprise installations in soaking pit furnaces, rotary hearth furnaces, roller hearth furnaces, and walking beam furnaces with up to 300 t/h nominal capacity, and for production of carbon steel, engineering steel, and stainless steel grades at companies in USA, Europe, and Asia.","PeriodicalId":21337,"journal":{"name":"Revue De Metallurgie-cahiers D Informations Techniques","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81963119","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

Microstructural characterization and mechanical behavior of Cr25Ni35NbM alloy dissimilar weld joint for application in a hydrogen reformer furnace 氢转化炉用Cr25Ni35NbM合金异种焊缝的显微组织表征及力学行为

Revue De Metallurgie-cahiers D Informations Techniques Pub Date : 2020-01-01 DOI: 10.1051/metal/2020067

Jingfeng Guo, Wenwen Liu, Chunxiu Li, Xiaoming Zhang

{"title":"Microstructural characterization and mechanical behavior of Cr25Ni35NbM alloy dissimilar weld joint for application in a hydrogen reformer furnace","authors":"Jingfeng Guo, Wenwen Liu, Chunxiu Li, Xiaoming Zhang","doi":"10.1051/metal/2020067","DOIUrl":"https://doi.org/10.1051/metal/2020067","url":null,"abstract":"The microstructural characterization and mechanical behavior of Cr25Ni35NbM/15CrMo and Cr25Ni35NbM/SUS321 dissimilar weld joints were studied in this paper. The microstructure, room temperature and high temperature (1173 K) tensile strength of dissimilar weld joints were analyzed through optical microscopy (OM), scanning electron microscopy (SEM) and electronic universal tensile testing machine. The microstructure of HAZ in 15CrMo steel of Cr25Ni35NbM/15CrMo dissimilar weld joint transformed from ferrite-pearlite into ferrite-martensite. A large volume fraction of α phase was found to have precipitated in the HAZ of SUS321 austenitic stainless steel for Cr25Ni35NbM/SUS321 dissimilar weld joint. At room temperature, the tensile strength and yield strength of these two type dissimilar weld joints is less than Cr25Ni35NbM alloy similar weld joint. The high temperature tensile strength of these two type dissimilar weld joints is less than Cr25Ni35NbM alloy similar weld joint. Both at room and high temperature, the fracture locations of two types dissimilar weld joints are the HAZ of the base metal 15CrMo and SUS321 stainless steel, respectively. It indicates that the weak part of the Cr25Ni35NbM alloy dissimilar weld joints is the low-performance base metals 15CrMo and SUS321 stainless steel.","PeriodicalId":21337,"journal":{"name":"Revue De Metallurgie-cahiers D Informations Techniques","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89443541","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