{"id":3183,"date":"2026-06-24T16:13:03","date_gmt":"2026-06-24T14:13:03","guid":{"rendered":"https:\/\/www.technical-center.de\/wiki\/molten-salts\/"},"modified":"2026-06-24T16:13:03","modified_gmt":"2026-06-24T14:13:03","slug":"molten-salts","status":"publish","type":"encyclopedia","link":"https:\/\/www.technical-center.de\/en\/glossary\/molten-salts\/","title":{"rendered":"Molten salts"},"content":{"rendered":"<div class=\"glossar-eintrag\">\n<p><strong>Definition:<\/strong> Molten salts are melted inorganic salts used as heat-transfer, reaction or heat-treatment media at elevated temperatures. Typical systems are based on nitrates, chlorides or carbonates. They are characterised by high heat capacity and thermal stability.<\/p>\n<p><strong>Practical relevance:<\/strong> Applications are found in heat treatment, solar thermal energy or the chemical process industry. Molten salts can be highly corrosive, particularly towards unalloyed or low-alloy steels. Temperature range, oxygen content, impurities and material resistance are assessed. Suitable materials or <a class=\"tc-inlink\" href=\"\/en\/materials-engineering\/coating-technology-processes-and-applications\/\">coatings<\/a> are decisive for plant integrity.<\/p>\n<p><strong>Decision-making perspectives:<\/strong><\/p>\n<ul>\n<li><strong>Technical decision-makers:<\/strong> Selection of <a class=\"tc-inlink\" href=\"\/en\/corrosion-consulting-and-testing\/\">corrosion<\/a>-resistant materials and monitoring of the salt chemistry.<\/li>\n<li><strong>Purchasing\/project management:<\/strong> Specification of suitable material grades and testing requirements.<\/li>\n<li><strong>Science:<\/strong> Investigation of high-temperature corrosion and diffusion processes.<\/li>\n<li><strong>Insurance\/law:<\/strong> Assessment of corrosion damage and compliance with technical codes and standards.<\/li>\n<\/ul>\n<p><strong>Typical testing or verification methods:<\/strong> High-temperature corrosion tests, <a class=\"tc-inlink\" href=\"\/en\/materials-testing-analysis\/metallography-microstructure-analysis\/\">metallography<\/a>, weight-loss measurement, materials analysis.<\/p>\n<p><strong>FAQ:<\/strong><\/p>\n<ul>\n<li>Why are molten salts corrosive?<\/li>\n<li>Molten salts can destabilise protective layers and promote electrochemical reactions at high temperatures.<\/li>\n<\/ul>\n<\/div>\n","protected":false},"author":0,"featured_media":0,"template":"","encyclopedia-tag":[],"class_list":["post-3183","encyclopedia","type-encyclopedia","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.technical-center.de\/en\/wp-json\/wp\/v2\/encyclopedia\/3183","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.technical-center.de\/en\/wp-json\/wp\/v2\/encyclopedia"}],"about":[{"href":"https:\/\/www.technical-center.de\/en\/wp-json\/wp\/v2\/types\/encyclopedia"}],"wp:attachment":[{"href":"https:\/\/www.technical-center.de\/en\/wp-json\/wp\/v2\/media?parent=3183"}],"wp:term":[{"taxonomy":"encyclopedia-tag","embeddable":true,"href":"https:\/\/www.technical-center.de\/en\/wp-json\/wp\/v2\/encyclopedia-tag?post=3183"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}