Suppression of aqueous corrosion of La(Fe0.88Si0.12)13 by reducing dissolved oxygen concentration for high-performance magnetic refrigeration

Autor:	Shun Fujieda, Shigeru Suzuki, Kazuaki Fukamichi
Rok vydání:	2014
Předmět:	Aqueous solution Chemistry Mechanical Engineering Inorganic chemistry Metals and Alloys chemistry.chemical_element Thermodynamics Sorption Oxygen Chemical reaction Isothermal process Corrosion Mechanics of Materials Materials Chemistry Magnetic refrigeration Curie temperature
Zdroj:	Journal of Alloys and Compounds. 600:67-70
ISSN:	0925-8388
DOI:	10.1016/j.jallcom.2014.01.229
Popis:	The itinerant-electron metamagnetic transition of La(Fe0.88Si0.12)13 becomes indistinct after immersion in distilled-water containing about 8 ppm of the dissolved oxygen (DO) concentration because of aqueous corrosion. However, the aqueous corrosion of La(Fe0.88Si0.12)13 is significantly suppressed by reducing the DO concentration. Thus, isothermal magnetic entropy change after immersion for 30 days in deaerated distilled-water with a DO concentration less than 0.1 ppm is larger than that after immersion for 5 days in distilled-water containing about 8 ppm of the DO concentration. Consequently, the reduction of the DO concentration is effective for preservation of the excellent magnetocaloric effects of La(Fe0.88Si0.12)13 in an aqueous solution, which is a promising heat transfer fluid of room-temperature magnetic refrigeration.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d2896e9c59b029591ec8b7302b3abf0b https://doi.org/10.1016/j.jallcom.2014.01.229 Zobrazit plný text záznamu Full Text from ScienceDirect