Effect of quenching media on the properties of TiNi shape memory alloys fabricated by powder metallurgy

Elsayed, Ayman; Umeda, Junko; Kondoh, Katsuyoshi

doi:10.1016/j.jallcom.2020.155931

Cited by 9 publications

(4 citation statements)

References 30 publications

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“…In metallurgy, thermal plasma is commonly used for heating, where the arcs of plasma guns ionize the gas, forming an energetic gaseous plasma with an average temperature ranging from 10 000 to 30 000°C and an electron density of 10 21 m À3 to 10 26 m À3 to heat the target object. Currently, plasma heating technology is mainly employed in metallurgy for methane reforming, [102][103][104] powder metallurgy, [105][106][107] and ladle heating. [108,109] The application of plasma heating in the BFs is rarely reported.…”

Section: The Carbon Recycling Bf With Plasma Heatingmentioning

confidence: 99%

The Low‐Carbon Production of Iron and Steel Industry Transition Process in China

Pang,

Bu,

Yuan

et al. 2023

steel research int.

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Severe greenhouse gas emissions have made global warming one of humanity's most critical and intricate environmental challenges. As the world's largest producer and exporter of steel, China's steel industry contributes substantially to carbon emissions. The government formulated the policies and pathways to achieve carbon neutrality, and enterprises have proactively pursued low‐carbon technologies. In this review, the decarbonization process in the Chinese steel industry is classified into three stages according to the decarbonization amount and technological maturity: the improvements of the blast furnace‐basic oxygen furnace, the attempt of the nonblast furnace, and the preparatory electricity‐hydrogen coupling metallurgy. This article reviewed the industrial‐scale low‐carbon metallurgical technologies represented by the Baowu HyCORF process, bottom‐blowing O2‐CO2‐pulverized lime converter process, gas‐based direct reduction shaft furnace process, Molong HIsmelt process, and Ouye furnace process, as well as pointed out the development limitations of those processes. Additionally, the study presented prospects for zero‐carbon emission technologies coupling green energy generation and hydrogen metallurgy. These findings will offer substantial support for advancing research and development of low‐carbon metallurgical technologies and formulating relevant policies in the future.

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Section: The Carbon Recycling Bf With Plasma Heatingmentioning

confidence: 99%

The Low‐Carbon Production of Iron and Steel Industry Transition Process in China

Pang,

Bu,

Yuan

et al. 2023

steel research int.

View full text Add to dashboard Cite

show abstract

“…Providing more precise surface morphology control, such techniques permit to obtain surfaces that are more suitable for in vivo applications [13,14]. Materials based on TiNi alloys fabricated via more conventional methods such as powder metallurgy [15,16] (including, hot-press sintering [17], spark plasma sintering (SPS) [18][19][20], etc. ), can be further modified using ion-plasma [21,22], ion-beam [23,24], laser-beam [25][26][27] or other similar treatments.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Electron-Beam Surface Modification of Novel TiNi Material for Medical Applications

et al. 2021

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A new approach to fabricate TiNi surfaces combining the advantages of both monolithic and porous materials for implants is used in this work. New materials were obtained by depositing a porous TiNi powder onto monolithic TiNi plates followed by sintering at 1200 °C. Then, further modification of the material surface with a high-current-pulsed electron beam (HCPEB) was carried out. Three materials obtained (one after sintering and two after subsequent beam treatment by 30 pulses with different pulse energy) were studied by XRD, SEM, EDX, surface profilometry, and by means of electrochemical measurements, including OCP and EIS. Structural and compositional changes caused by HCPEB treatment were investigated. Surface properties of the samples during their storage in saline for 10 days were studied and a model experiment with cell growth (MCF-7) was carried out for the unmodified sample with an electron beam to detect cell appearance on different surface locations.

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“…La pulvimetalúrgia es única en mezcla de materiales con puntos de fusión disímiles o extremadamente elevados que tienden a reaccionar de manera abrupta con el ambiente al ser fundidos [1]. Se establece que mediante el control de variables de molienda se generan cambios microestructurales en el polvo, conocido como "aleación mecánica", permitiendo a través de la compactación y la sinterización, producir aleaciones de ciertos elementos como Hf.…”

Section: Introductionunclassified

Mejoramiento de la resistencia a la corrosión de las mezclas de hierro e itrio mediante pulvimetalurgia

Chaparro

Angarita-Moncaleano

́ópez-Camargo

2021

Aibi revista investig. adm. ing.

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Se fabrica por vía Pulvimetalúrgica mezcla de 0%, 1%, 3%, 5%, 7% contenido en peso de Óxido de Itrio en Hierro Fe; con el fin de establecer la influencia del cerámico en el metal al ser expuesto en una solución con contenido de cloruro de sodio. Las probetas son sometidas a caracterización estructural obtenida mediante difracción de rayos X (DRX), mientras que el análisis de las propiedades electroquímicas se llevó a cabo mediante el estudio de las curvas de polarización y espectroscopia de impedancias electroquímica. La caracterización luego del ensayo de deterioro se realizó mediante DRX para las diferentes mezclas, los productos de corrosión se identificaron con DRX. A partir de los resultados se obtuvo la aleación mecánica y evidenciando nuevas fases (Óxido de itrio y hierro) y (Hierro de itrio) producto del proceso de la fabricación. Las muestras presentaron resistencia a la corrosión respecto al aumento del cerámico en el metal debido a la formación de las fases generadas por la mezcla, sin embargo, se determinó que el porcentaje más adecuado es el 5%, debido a que es la cantidad óptima incorporada al hierro, capaz de conferirle las propiedades de protección frente a la corrosión.

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Effect of quenching media on the properties of TiNi shape memory alloys fabricated by powder metallurgy

Cited by 9 publications

References 30 publications

The Low‐Carbon Production of Iron and Steel Industry Transition Process in China

The Low‐Carbon Production of Iron and Steel Industry Transition Process in China

Preparation and Electron-Beam Surface Modification of Novel TiNi Material for Medical Applications

Mejoramiento de la resistencia a la corrosión de las mezclas de hierro e itrio mediante pulvimetalurgia

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