Microstructure Photos of Spherical Cast Tungsten Carbide Powder Samples After Corrosion<\/figcaption><\/figure>\nThe image above shows the microstructure photos of spherical cast tungsten carbide powder particles after corrosion. It can be observed that the internal structure of the spherical tungsten carbide powder particles prepared by the three methods mainly consists of a typical fine acicular WC and W2C eutectic structure. Compared to the plasma remelting spheroidization method and the induction remelting spheroidization method, the spherical cast tungsten carbide powder prepared by the plasma rotating electrode atomization method has a denser eutectic structure. This is because, unlike the plasma remelting spheroidization method and the induction remelting spheroidization method, the plasma rotating electrode atomization method completely melts the cast tungsten carbide feedstock rod and then solidifies by being thrown out under the action of centrifugal force. During the crystallization of the molten cast tungsten carbide, the degree of undercooling is greater, nucleation is more rapid, and a larger number of crystal nuclei are generated, resulting in a finer and denser eutectic structure.<\/p>\n
<\/p>\n
Microdureza<\/h1>\n
The table below shows the average microhardness of spherical cast tungsten carbide powders prepared by different methods. It can be seen that the microhardness of the spherical cast tungsten carbide powders prepared by the three methods is all above 2800 HV0.1, with the powder prepared by the plasma rotating electrode atomization method having the highest microhardness, reaching 3045 HV0.1. This is mainly due to the finer eutectic structure within the spherical cast tungsten carbide prepared by the plasma rotating electrode atomization method.<\/p>\n
<\/h1>\nOther Physical Properties of spherical cast tungsten carbide<\/h2>\n
The table below shows the flowability and apparent density values of spherical cast tungsten carbide powders prepared by different methods. It can be seen that the powder prepared by the plasma rotating electrode atomization method has the worst flowability and the smallest apparent density; whereas the powder prepared by the induction remelting spheroidization method has the best flowability and the largest apparent density.<\/p>\n
<\/p>\n
Conclus\u00e3o<\/h1>\n
(1) The spherical cast tungsten carbide prepared by the plasma rotating electrode atomization method has the smallest deviation from the theoretical eutectic carbon content, the lowest free carbon content, and relatively low impurity content.<\/p>\n
(2) The spherical tungsten carbide powder particles prepared by the plasma rotating electrode atomization method are dense with almost no defects, and the eutectic structure is finer. The spherical tungsten carbide powder particles prepared by the plasma remelting spheroidization method and the induction remelting spheroidization method both have some obvious pores, resulting in some hollow powders.<\/p>\n
(3) The spherical cast tungsten carbide powders prepared by the three methods mainly consist of WC and W2C phases.<\/p>\n
(4) The microhardness of the spherical cast tungsten carbide powders prepared by the three methods is all above 2800 HV0.1, with the powder prepared by the plasma rotating electrode atomization method having the highest microhardness, reaching 3045 HV0.1. The powder prepared by the induction remelting spheroidization method has the best flowability and the largest apparent density.<\/p><\/div>\n
<\/p>","protected":false},"excerpt":{"rendered":"
Many structures made of WC-Co carbide are subject to thermo-mechanical loading and have to conduct heat in order to function properly in industrial application. The current work provides results on a significant drop in thermal conductivity of WC-Co carbides as a function of material volume damage that accumulates during cyclic high-temperature loading of the materials…<\/p>","protected":false},"author":2,"featured_media":23020,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[79],"tags":[],"jetpack_featured_media_url":"https:\/\/www.meetyoucarbide.com\/wp-content\/uploads\/2024\/11\/\u56fe\u724712.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.meetyoucarbide.com\/pt\/wp-json\/wp\/v2\/posts\/23004"}],"collection":[{"href":"https:\/\/www.meetyoucarbide.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.meetyoucarbide.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/pt\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/pt\/wp-json\/wp\/v2\/comments?post=23004"}],"version-history":[{"count":2,"href":"https:\/\/www.meetyoucarbide.com\/pt\/wp-json\/wp\/v2\/posts\/23004\/revisions"}],"predecessor-version":[{"id":23022,"href":"https:\/\/www.meetyoucarbide.com\/pt\/wp-json\/wp\/v2\/posts\/23004\/revisions\/23022"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/pt\/wp-json\/wp\/v2\/media\/23020"}],"wp:attachment":[{"href":"https:\/\/www.meetyoucarbide.com\/pt\/wp-json\/wp\/v2\/media?parent=23004"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/pt\/wp-json\/wp\/v2\/categories?post=23004"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/pt\/wp-json\/wp\/v2\/tags?post=23004"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}