Intermetallic Compounds - Formation and Applications最新文献

Technological Aspects of Production and Processing of Functional Materials Based on Intermetallic Fe-Al 基于金属间化合物Fe-Al的功能材料的生产与加工技术

Intermetallic Compounds - Formation and Applications Pub Date : 2018-05-30 DOI: 10.5772/INTECHOPEN.76701

M. Jabłońska, I. Bednarczyk, A. Śmiglewicz, T. Mikuszewski

引用次数: 0

Physical Properties of Yttrium-Rhodium and Yttrium-Copper B2-Type Rare Earth Intermetallic Compounds: First Principles Study 钇铑和钇铜b2型稀土金属间化合物的物理性质:第一性原理研究

Intermetallic Compounds - Formation and Applications Pub Date : 2018-05-30 DOI: 10.5772/INTECHOPEN.73189

A. Sekkal, M. Sahlaoui, A. Benzair

引用次数: 1

Intermetallic Bonding for High-Temperature Microelectronics and Microsystems: Solid-Liquid Interdiffusion Bonding 高温微电子和微系统的金属间键合:固-液扩散键合

Intermetallic Compounds - Formation and Applications Pub Date : 2018-05-30 DOI: 10.5772/INTECHOPEN.75139

K. Aasmundtveit, T. Luu, Hoang-Vu Nguyen, AndreasLarsson, T. A. Tollefsen

引用次数: 9

Effect on Heat Treatment and Doping of Cubic NaZn13-Type La0.7Pr0.3(Fe,Si)13 for Magnetic Refrigerator Application 磁性冰箱用立方nazn13型La0.7Pr0.3(Fe,Si)13的热处理和掺杂影响

Intermetallic Compounds - Formation and Applications Pub Date : 2018-05-30 DOI: 10.5772/INTECHOPEN.75607

M. Din, Jianli Wang, M. T. Ishak

{"title":"Effect on Heat Treatment and Doping of Cubic NaZn13-Type La0.7Pr0.3(Fe,Si)13 for Magnetic Refrigerator Application","authors":"M. Din, Jianli Wang, M. T. Ishak","doi":"10.5772/INTECHOPEN.75607","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.75607","url":null,"abstract":"Soft ferromagnetic cubic NaZn13-type La0.7Pr0.3Fe11.4Si1.6 has turned out to be a standout amongst the most fascinating compounds for investigating substantial magnetocaloric effect (MCE) on the grounds that the attractive properties of this compound shows large enough spontaneous magnetization for applications, strongly doping dependent, and as well as delicate soft ferromagnetism. These impacts can be attributed to the itinerant electron metamagnetic (IEM) transition especially around the first-order magnetic transition region. However, this compound is difficult to frame by the basic cementing process because of the inherent deficiency of the peritectic response, Υ-Fe + La → La(Fe,Si)13(τ1a), which frequently brings about a blended microstructure of α-Fe + La(Fe,Si)13(τ1a) + LaFeSi(τ4). Additionally, dependability of La(FexSi1−x)13 is no middle-of-the-road stage and common solvency amongst Fe and La in the Fe-La framework as a reality is represented by response dispersion as indicated by magnetic and electronic states’ contribution. From this point of view, the structure, attractive properties and MCE of this compound have been talked about in detail as indicated by various temperatures and times of the annealing treatment. In addition, efficiently contemplating on the doping impact from various concentrations of transition metal elements such as Copper (Cu) and Chromium (Cr) on Iron (Fe) in the La0.7Pr0.3Fe11.4Si1.6 compound is likewise discussed.","PeriodicalId":283232,"journal":{"name":"Intermetallic Compounds - Formation and Applications","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122357323","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

Intermetallics Formation and Their Effect on Mechanical Properties of Al-Si-X Alloys Al-Si-X合金金属间化合物的形成及其对力学性能的影响

Intermetallic Compounds - Formation and Applications Pub Date : 2018-05-30 DOI: 10.5772/INTECHOPEN.73188

W. Ebhota, T. Jen

引用次数: 40

Inter-Diffusion of Nickel and Palladium with Germanium 镍、钯与锗的相互扩散

Intermetallic Compounds - Formation and Applications Pub Date : 2018-05-30 DOI: 10.5772/INTECHOPEN.73190

A. Habanyama, C. Comrie

{"title":"Inter-Diffusion of Nickel and Palladium with Germanium","authors":"A. Habanyama, C. Comrie","doi":"10.5772/INTECHOPEN.73190","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.73190","url":null,"abstract":"Nickel and palladium germanides are the most promising candidates for nano-electronic contact materials to active areas of germanium-based devices. Solid-state reactions were thermally induced in conventional thin film couples of the Ni/Ge and Pd/Ge systems in order to study the sequence of phase formation. By embedding a thin layer of tantalum or tungsten as an inert marker between coupling thin film layers and observing its move- ment during phase formation, the dominant diffusing species were identified and monitored. In the Ni/Ge system, Ni 5 Ge 3 was the first phase to form followed by NiGe. The results showed that during Ni 5 Ge 3 formation, Ni was the sole diffusing species. During NiGe formation, both Ni and Ge diffused with the Ge diffusion prominent during the early stages, while the later stage of growth was dominated by Ni diffusion. The only phases observed to form in the Pd/Ge system were PdGe and Pd 2 Ge, the latter being the first. Palladium was the dominant diffusing species during both phase formations. Lateral diffusion couples were also prepared by the deposition of thick rectangular islands of germanium on to thin films of nickel and palladium. Several aspects of thermally induced lateral (as opposed to vertical) growth of phases were studied.","PeriodicalId":283232,"journal":{"name":"Intermetallic Compounds - Formation and Applications","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121166739","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

The Importance of the Fluorine Effect on the Oxidation of Intermetallic Titanium Aluminides 氟对金属间钛铝化物氧化的重要性

Intermetallic Compounds - Formation and Applications Pub Date : 2018-05-30 DOI: 10.5772/INTECHOPEN.75696

A. Donchev, M. Galetz

{"title":"The Importance of the Fluorine Effect on the Oxidation of Intermetallic Titanium Aluminides","authors":"A. Donchev, M. Galetz","doi":"10.5772/INTECHOPEN.75696","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.75696","url":null,"abstract":"Due to the low Al activity within technical titanium aluminides and the similar thermody- namic stabilities of Al- and Ti-oxide these alloys always form a mixed oxide scale at elevated temperatures consisting of TiO 2 , Al 2 O 3 and also nitrides if the exposure takes place in air. This mixed scale does not provide any oxidation protection especially under thermocyclic load or in water vapor containing environments. Thus accelerated oxidation occurs. Alloying of additional elements such as Nb improves the oxidation behavior if the additions stay within a certain concentration range but such additions cannot suppress non-protective mixed scale formation. Coatings are another way to protect these materials but several obstacles and new degradation mechanisms exist such as delamination e.g. due to CTE mismatch or development of brittle intermetallic phases due to interdiffusion. Therefore, other suitable protective measures have to be undertaken to make sure a protective oxide scale will develop. The so called halogen effect is a very promising way to change the oxidation mechanism from mixed scale formation to alumina formation. After optimized halogen treatment the alumina layer is very protective up to several thousand hours even under thermocyclic load and in atmospheres containing water vapor or SO 2 .","PeriodicalId":283232,"journal":{"name":"Intermetallic Compounds - Formation and Applications","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128188968","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

FeAl Intermetallic Alloy: Its Heat-Resistant and Practical Application 铁金属间合金的耐热性及其实际应用

Intermetallic Compounds - Formation and Applications Pub Date : 2018-05-30 DOI: 10.5772/INTECHOPEN.73184

J. Cebulski, D. Pasek

{"title":"FeAl Intermetallic Alloy: Its Heat-Resistant and Practical Application","authors":"J. Cebulski, D. Pasek","doi":"10.5772/INTECHOPEN.73184","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.73184","url":null,"abstract":"Intermetallic phases, as a group of materials which have a great practical importance, both in the past and in the present day, are subject of research on the basis of physicochemical and mechanical properties. The presented studies were conducted for Fe40Al5Cr0.2TiB intermetallic alloy, their purpose was to determine the corrosion resistance of this alloy in an oxidizing environment, at temperatures up to 1373 K. The test material was made of Fe40Al5Cr0.2TiB intermetallic alloy after plastic processing. The kinetics of corrosion, allotropic variants according to the temperature of the process and the surface condition after corrosion were determined during the study. Based on the results obtained, the verification was performed under operating conditions. Taking into account the properties of the FeAl alloys, the working conditions and material requirements of turbochargers, studies have been undertaken to determine the possibility of the use of Fe40Al5Cr0.2TiB intermetallic alloys for components of the hot turbocharger of the automobile with compression ignition engines. The components of the hot turbocharger parts were used from the test material. The tests distance of turbocharger was 80,000 km.","PeriodicalId":283232,"journal":{"name":"Intermetallic Compounds - Formation and Applications","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132533559","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: 6

Structural and Mechanical Behaviour of Al-Fe Intermetallics Al-Fe金属间化合物的结构和力学行为

Intermetallic Compounds - Formation and Applications Pub Date : 2018-05-30 DOI: 10.5772/INTECHOPEN.73944

M. R. Basariya, Nilay KrishnaMukhopadhyay

{"title":"Structural and Mechanical Behaviour of Al-Fe Intermetallics","authors":"M. R. Basariya, Nilay KrishnaMukhopadhyay","doi":"10.5772/INTECHOPEN.73944","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.73944","url":null,"abstract":"In this chapter, results of our recent investigations on Al-25%Fe (at.%), Al-30%Fe and Al-34.5%Fe alloys close to Al 3 Fe, Al 5 Fe 2 and Al 2 Fe intermetallic phases have been discussed. The effect of process parameters on structural aspects and mechanical behaviour of Al-Fe intermetallics has been studied. The high melting intermetallics that are difficult to prepare by conventional processing technique are easily synthesized in nanocrystalline state with a homogeneous structure by mechanical means. In this process, we have come out with a single orthorhombic Al 5 Fe 2 nanocrystalline intermetallic phase. Hardness measurements of intermetallic revealed an increase in hardness with a decreasing grain size up to a critical grain size, followed by a decrease. A decrease in hardness with a grain size refinement, an indication of softening behaviour, demonstrating the Inverse Hall-Petch (IHP)-like phenomenon has been observed in intermetallic compounds. The deviation from the regular Hall- Petch (HP) behaviour has been discussed using various deformation models based on the dislocations and grain boundary-mediated processes. The study is focused on investigations of Al-rich iron aluminide intermetallics to understand the structure property correlations.","PeriodicalId":283232,"journal":{"name":"Intermetallic Compounds - Formation and Applications","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128874972","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

Transition Metal Aluminide Coatings and Initial Steps on Additive Manufacturing 过渡金属铝化物涂层和增材制造的初步步骤

Intermetallic Compounds - Formation and Applications Pub Date : 2017-12-20 DOI: 10.5772/INTECHOPEN.72582

Núria Cinca i Luis

{"title":"Transition Metal Aluminide Coatings and Initial Steps on Additive Manufacturing","authors":"Núria Cinca i Luis","doi":"10.5772/INTECHOPEN.72582","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.72582","url":null,"abstract":"During the last decades, Fe-, Ni- and Ti-based aluminides have been studied in terms of bulk materials with an effort to develop alloying and processing strategies to overcome their low ductilities and toughness compared to conventional alloys. Whenever significant improvements can be addressed in this direction, they will be opened to an extensive range of industrial applications, especially those related to high temperature resistance require - ments. In parallel, progressing interest has also been focused on their application as protec tive layers. This chapter is intended to provide a review of the evolution that has been made mainly during the last two decades of the several coating technologies devoted for this pur -pose. From thick to thin coatings are revised, with insight into coating microstructures and properties as well. Lack of space has forced the selection of those technologies arising most interest within last years; therefore, the content will follow this order: joining (laser cladding and electrospark deposition), thermal spraying (high velocity oxygen fuel and cold spray ing) and physical vapor deposition (magnetron sputtering and cathodic arc deposition).","PeriodicalId":283232,"journal":{"name":"Intermetallic Compounds - Formation and Applications","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128375268","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