{"id":4976,"date":"2023-01-11T08:53:54","date_gmt":"2023-01-11T03:23:54","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=4976"},"modified":"2025-03-27T03:33:06","modified_gmt":"2025-03-26T22:03:06","slug":"nickel-alloy-coating","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/nickel-alloy-coating\/","title":{"rendered":"Nickel Alloy Coating"},"content":{"rendered":"<h2><strong>Why in news?<\/strong><\/h2>\n<ul>\n<li>A new method of deposition of Nickel alloy coatings on high-performance materials in engineering applications can replace environmentally toxic chrome coatings. The coatings obtained are also highly corrosion-resistant and useful for the plastic ware industry.<\/li>\n<li>The process used <strong>pulsed current electroplating<\/strong>, which is environmentally benign with high production capacity.<\/li>\n<li>They have used electric current in the form of pulses of a duration of a few milliseconds for electroplating purposes.<\/li>\n<li>The process consists of an environment-friendly electrolyte consisting of nickel and tungsten ions that is the source of strengthening elemental <strong>tungsten (W)<\/strong> and nickel (Ni).\u00a0<\/li>\n<li>The pulsed current is applied between the components to be coated, acting as a cathode and a non-consumable anode.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3><strong>Advantages of the new method:<\/strong><\/h3>\n<ul>\n<li>The pulsed current effect was used for nano-crystalline coatings wherein high instantaneous current density for a very small duration resulted in a high rate of nucleation.\u00a0<\/li>\n<li>The coatings were virtually <strong>porosity free, crack free with minimal hydrogen uptake.<\/strong>\u00a0<\/li>\n<li>The use of pulsed current resulted in the nano-crystallization of nickel tungsten alloy coatings with high hardness (700-1200 HV) and wear resistance.\u00a0<\/li>\n<li>The coatings were extremely corrosion-resistant and could withstand up to 700 hrs of salt spray.<\/li>\n<li>The coatings can withstand <strong>temperatures up to 500\u00b0C<\/strong> without thermal softening and can improve the life of die components by at least two times than conventional chrome plating.\u00a0<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3><strong>Key facts about Nickel<\/strong><\/h3>\n<ul>\n<li>It does not occur freely in nature.<\/li>\n<li>It is found in association with copper, uranium and other metals.<\/li>\n<li>It is an important alloying material.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<hr \/>\n<h3><strong>Q1) What is an alloy?<\/strong><\/h3>\n<p>A metal alloy is a substance that combines more than one metal or mixes a metal with other non-metallic elements.For example, brass is an alloy of two metals: copper and zinc.<\/p>\n<p><strong>Source:<\/strong>\u00a0<a href=\"https:\/\/www.pib.gov.in\/PressReleasePage.aspx?PRID=1890028\" target=\"_blank\" rel=\"nofollow noopener\">The new technique of corrosion-resistant nickel alloy coatings can replace toxic chrome plating<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nickel Alloy Coating process uses pulsed current electroplating, which is environmentally benign with high production capacity.<\/p>\n","protected":false},"author":5,"featured_media":4977,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-4976","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/4976","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=4976"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/4976\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/4977"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=4976"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=4976"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=4976"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}