{"id":17,"date":"2023-11-07T13:38:48","date_gmt":"2023-11-07T05:38:48","guid":{"rendered":"https:\/\/artehistoria.net\/?p=17"},"modified":"2023-11-07T13:38:48","modified_gmt":"2023-11-07T05:38:48","slug":"performance-advantages-and-disadvantages-of-talc-ceramics","status":"publish","type":"post","link":"https:\/\/artehistoria.net\/lt\/talko-keramikos-privalumai-ir-trukumai\/","title":{"rendered":"Talkin\u0117s keramikos veikimas, privalumai ir tr\u016bkumai"},"content":{"rendered":"<p>Talkin\u0117 keramika, dar vadinama blokine talko keramika arba talko keramika, yra auk\u0161to da\u017enio prietais\u0173 keramikos r\u016b\u0161is, pasi\u017eyminti puikiomis elektrin\u0117mis savyb\u0117mis. Talko porceliano ma\u017ea dielektrin\u0117 skvarba (paprastai e = 6-7); ma\u017ea dielektrini\u0173 nuostoli\u0173 kampo tan\u03b4 tangento vert\u0117 svyruoja tarp (3-20) \u00d710<sup>-4<\/sup>, izoliacijos stipris paprastai yra 20-30 kV\/mm, o t\u016brin\u0117 var\u017ea yra didel\u0117 (t\u016brin\u0117 var\u017ea esant 100 \u2103 yra ma\u017edaug iki 10<sup>14<\/sup>\u03a9- cm), statinis lenkimo stipris paprastai yra 120-200 MPa, o cheminis stabilumas yra geras, atsparus r\u016bg\u0161tims, \u0161armams ir korozijai. Da\u017enini\u0173 charakteristik\u0173 po\u017ei\u016briu talko keramikos dielektrin\u0117 skvarba ma\u017e\u0117ja did\u0117jant da\u017eniui, o did\u0117jant temperat\u016brai, esant auk\u0161tiems da\u017eniams, ma\u017eai kinta. Tan\u03b4 Esant f=10<sup>6<\/sup>Hz ma\u017e\u0117ja did\u0117jant da\u017eniui, tod\u0117l tai visi\u0161kai \u012frodo talko keramikos privalumus, kai ji naudojama kaip auk\u0161to da\u017enio prietais\u0173 keramika. D\u0117l didelio izoliacijos stiprio, ma\u017e\u0173 dielektrini\u0173 nuostoli\u0173 ir puiki\u0173 auk\u0161tada\u017eni\u0173 talko keramikos savybi\u0173, nors dielektrin\u0117 skvarba n\u0117ra pakankamai didel\u0117, j\u0105 vis tiek galima naudoti kaip auk\u0161tos \u012ftampos didel\u0117s galios keramin\u012f kondensatori\u0173. Ma\u017e\u0173 nuostoli\u0173 talko keramikos, naudojamos kaip didel\u0117s galios keraminis kondensatorius, dielektrini\u0173 nuostoli\u0173 kampo tangento vert\u0117 gali siekti (3,5-4) \u00d7 10<sup>-4<\/sup>.<\/p>\n<p>talko keramika taip pat turi tr\u016bkum\u0105, kuriam turi b\u016bti skiriamas pakankamas d\u0117mesys: jei gamybos kontrol\u0117 yra netinkama, talko porcelianas nebus tinkamai \u012fd\u0117tas. Arba naudojimo metu gali pasireik\u0161ti sen\u0117jimo rei\u0161kinys, kur\u012f sukelia pagrindin\u0117s kristalin\u0117s faz\u0117s magnio metasilikato kristalin\u0117 transformacija, d\u0117l kurios susidaro keramikos milteliai, atsiranda \u012ftr\u016bkim\u0173, suma\u017e\u0117ja stiprumas ir pablog\u0117ja dielektrin\u0117s savyb\u0117s; sukepimo diapazonas yra siauras, paprastai tik apie 20 \u2103. Jei sukepinimo kontrol\u0117 n\u0117ra gera, da\u017enai atsiranda deformacij\u0173, p\u016bsli\u0173, trinkeli\u0173 klijavimo ir susidaro atliek\u0173. Praktika parod\u0117, kad gaminant talko keramik\u0105, jei \u017ealiavos, formul\u0117 ar gamybos procesas n\u0117ra tinkamai kontroliuojami, da\u017enai vyksta sen\u0117jimas. Jam \u012fvykus, gamyba ir naudojimas patirs didel\u0119 \u017eal\u0105 ir nuostoli\u0173, tod\u0117l sen\u0117jimo rei\u0161kinys turi b\u016bti labai vertinamas. Tyrimais patvirtinta, kad talko keramikos sen\u0117jimas arba dulk\u0117jimas vyksta d\u0117l magnio metasilikato (MgSiO<sub>3<\/sub>), pagrindin\u0119 kristalin\u0119 talko keramikos faz\u0119, taip pat deformacijos ir \u012ftempi\u0173 poveik\u012f kristalin\u0117s transformacijos proceso metu.<\/p>","protected":false},"excerpt":{"rendered":"<p>Talkin\u0117 keramika, dar vadinama blokine talko keramika arba talko keramika, yra auk\u0161to da\u017enio \u012frengini\u0173 keramikos r\u016b\u0161is, pasi\u017eyminti puikiomis [...]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[2],"tags":[],"class_list":["post-17","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/artehistoria.net\/lt\/wp-json\/wp\/v2\/posts\/17","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/artehistoria.net\/lt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/artehistoria.net\/lt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/artehistoria.net\/lt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/artehistoria.net\/lt\/wp-json\/wp\/v2\/comments?post=17"}],"version-history":[{"count":1,"href":"https:\/\/artehistoria.net\/lt\/wp-json\/wp\/v2\/posts\/17\/revisions"}],"predecessor-version":[{"id":18,"href":"https:\/\/artehistoria.net\/lt\/wp-json\/wp\/v2\/posts\/17\/revisions\/18"}],"wp:attachment":[{"href":"https:\/\/artehistoria.net\/lt\/wp-json\/wp\/v2\/media?parent=17"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/artehistoria.net\/lt\/wp-json\/wp\/v2\/categories?post=17"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/artehistoria.net\/lt\/wp-json\/wp\/v2\/tags?post=17"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}