{"id":9099,"date":"2015-04-28T19:08:44","date_gmt":"2015-04-28T19:08:44","guid":{"rendered":"https:\/\/staging.asminternational.org\/hts-new\/results\/-\/journal_content\/56\/10192\/25055664\/NEWS\/"},"modified":"2023-02-07T04:49:42","modified_gmt":"2023-02-07T04:49:42","slug":"cerium-cobalt-alloy-added-to-ndfeb-magnets-raises-curie-temperature-cuts-cost","status":"publish","type":"post","link":"https:\/\/www.asminternational.org\/hts\/cerium-cobalt-alloy-added-to-ndfeb-magnets-raises-curie-temperature-cuts-cost\/","title":{"rendered":"Cerium-cobalt alloy added to NdFeB magnets raises Curie temperature, cuts cost"},"content":{"rendered":"

\n\tThe U.S. Department of Energy’s Ames Laboratory, Ames, Iowa, reports that ASM Fellow Karl A. Gschneidner and a team of researchers have developed a low-cost cerium-cobalt alloy that can be added to neodymium-iron-boron to improve magnetic properties in rare-earth magnets. The new alloy eliminates the need for dysprosium, one of the scarcest and most costly rare earth elements.<\/span><\/p>\n

\n\tThe result, an alloy of neodymium, iron, and boron co-doped with cerium and cobalt, is a less expensive material with properties that are competitive with traditional sintered magnets containing dysprosium. The materials are at least 20 to 40% cheaper than the dysprosium-containing magnets.<\/p>\n

\n\tExperiments demonstrate that the cerium-containing alloy’s intrinsic coercivity \u2014 the ability of a magnetic material to resist demagnetization \u2014 far exceeds that of dysprosium-containing magnets at high temperatures.<\/p>\n

\n\t“We found that this material works better than anything out there at temperatures above 150\u00b0C,” says Dr. Gschneidner. “It’s an important consideration for high-temperature applications.”<\/p>\n

\n\tPrevious attempts to use cerium in rare-earth magnets failed because it reduced the Curie temperature, above which an alloy loses its permanent magnet properties. The research team discovered that co-doping with cobalt allowed cerium to substitute for dysprosium without losing magnetic properties.<\/p>\n

\n\tFinding a comparable substitute material is key to reducing manufacturing reliance on dysprosium, because current demand far outpaces mining and recycling sources.<\/p>\n

\n\tThe research was supported by the U.S. Department of Energy’s ARPA-E REACT program (Advanced Research Projects Agency-Energy-Rare Earth Alternatives in Critical Technologies) which develops cost-effective alternatives to rare earths.<\/p>\n

\n\twww.ameslab.gov<\/a><\/p>\n

\n\t <\/p>\n

\n\t <\/p>\n","protected":false},"excerpt":{"rendered":"

The U.S. Department of Energy’s Ames Laboratory, Ames, Iowa, reports that ASM Fellow Karl A. Gschneidner and a team of researchers have developed a low-cost cerium-cobalt alloy that can be added to neodymium-iron-boron to improve magnetic properties in rare-earth magnets.<\/p>\n","protected":false},"author":63082,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[444,446,461,439,440,441,1],"tags":[],"class_list":["post-9099","post","type-post","status-publish","format-standard","hentry","category-aerospace-and-defense","category-automobiles-and-ground-transportation","category-consumer-products","category-general","category-news","category-news-articles","category-uncategorized"],"yoast_head":"\nCerium-cobalt alloy added to NdFeB magnets raises Curie temperature, cuts cost - Heat Treating Society<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.asminternational.org\/hts\/results\/-\/journal_content\/56\/10192\/25055664\/NEWS\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cerium-cobalt alloy added to NdFeB magnets raises Curie temperature, cuts cost - Heat Treating Society\" \/>\n<meta property=\"og:description\" content=\"The U.S. Department of Energy's Ames Laboratory, Ames, Iowa, reports that ASM Fellow Karl A. 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