{"id":8970,"date":"2015-10-30T17:23:23","date_gmt":"2015-10-30T17:23:23","guid":{"rendered":"https:\/\/staging.asminternational.org\/hts-new\/results\/-\/journal_content\/56\/10192\/25887539\/NEWS\/"},"modified":"2023-02-07T04:49:32","modified_gmt":"2023-02-07T04:49:32","slug":"gas-nitriding-and-nitrocarburizing","status":"publish","type":"post","link":"https:\/\/www.asminternational.org\/hts\/gas-nitriding-and-nitrocarburizing\/","title":{"rendered":"Gas Nitriding and Nitrocarburizing"},"content":{"rendered":"<p>\n\t<strong>Gas Nitriding and Nitrocarburizing<\/strong><\/p>\n<p>\n\tGas nitriding is based on the decomposition of ammonia (NH<sub>3<\/sub>) at temperatures between 500 and 600\u00b0C (930 and 1110\u00b0F) according to:<\/p>\n<p>\n\tNH<sub>3<\/sub> = <em>N<\/em><sub>soluted<\/sub> + 3\/2H<sub>2<\/sub><\/p>\n<p style=\"margin-left:2.25pt;\">\n\t<span style=\"line-height: 1.4;\">The nitriding potential (<\/span><em style=\"line-height: 1.4;\">K<\/em><sub>N<\/sub><span style=\"line-height: 1.4;\">), which is connected with the formation of different phases in the surface layer and therefore acts as one of the key factors to control the process, can be derived from the reaction as:<\/span><\/p>\n<p>\n\t<em>K<\/em><sub>N<\/sub> = <em>p<\/em><sub>NH3<\/sub>\/<em>p<\/em><sub>H2<\/sub><sup>3\/2<\/sup><\/p>\n<p>\n\tThe graph shows the Lehrer diagram for the formation of four iron phases in ammonia-hydrogen mixtures.<\/p>\n<p>\n\t<span style=\"line-height: 1.4;\">Volume 4D, <\/span><em style=\"line-height: 1.4;\">Heat Treating of Irons and Steels<\/em><span style=\"line-height: 1.4;\">&nbsp;-&gt;&nbsp; Tool Steels -&gt; Introduction to Heat Treating of Tool Steels&nbsp;-&gt;&nbsp;Heat Treatment Applied to Tool Steels<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Gas nitriding is based on the decomposition of ammonia (NH3) at temperatures between 500 and 600\u00b0C (930 and 1110\u00b0F) according to:<\/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":[1],"tags":[],"class_list":["post-8970","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - 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