Tsarin yumbu foda shine ainihin albarkatun MLCC, yana lissafin 20% ~ 45% na farashin MLCC. Musamman ma, babban ƙarfin MLCC yana da ƙayyadaddun buƙatu akan tsabta, girman barbashi, granularity da ilimin halittar jiki na foda yumbu, da farashin yumbu foda yana ƙididdige ƙimar mafi girma. MLCC wani abu ne na yumbu foda na lantarki wanda aka kafa ta hanyar ƙara abubuwan da aka gyara zuwabarium titanate foda, wanda za'a iya amfani dashi kai tsaye azaman dielectric a MLCC.
Rare ƙasa oxidesmuhimman abubuwan doping na MLCC dielectric powders. Kodayake suna lissafin ƙasa da 1% na albarkatun MLCC, za su iya taka muhimmiyar rawa wajen daidaita kaddarorin yumbura da haɓaka amincin MLCC yadda ya kamata. Suna ɗaya daga cikin mahimman kayan albarkatu masu mahimmanci a cikin aiwatar da haɓakar manyan foda na yumbu na MLCC.
1. Wadanne abubuwa ne da ba kasafai ake samun su ba? Abubuwan da ba a sani ba, kuma aka sani da ƙananan ƙarfe na ƙasa, kalma ce ta gaba ɗaya don abubuwan lanthanide da ƙungiyoyin abubuwan da ba kasafai ba. Suna da sifofi na musamman na lantarki da kayan aikin jiki da na sinadarai, kuma na musamman na lantarki, na gani, magnetic, da kaddarorin zafi ana san su da tarin sabbin kayan.
Abubuwan da ba kasafai ba sun kasu zuwa: abubuwan da ba kasafai suke da haske ba (tare da kananan lambobin atomic):scandium(Sc),yttrium(Y),lantanum(La)cerium(Ce),praseodymium(Pr),neodymium(Nd), promethium (Pm),samari(Sm) kumaeuropium(Eu); abubuwa masu nauyi na ƙasa (tare da manyan lambobin atomic):gadolinium(Gd),terbium(Tb),dysprosium(Dy),holmium(Ho),erbium(Eh),thulium(Tm),ytterbium(Yb),Lutium(Lu).
Rare ƙasa oxides ana amfani da ko'ina a yumbu, yaficerium oxide, lanthanum oxide, neodymium oxide, dysprosium oxide, samarium oxide, holium oxide, erbium oxide, da dai sauransu. Ƙara ƙaramin adadin ko gano adadin ƙarancin ƙasa zuwa yumbu na iya canza yanayin microstructure, abun da ke ciki, yawa, kaddarorin inji, kaddarorin jiki da sinadarai da kaddarorin kayan yumbu.
2. Aikace-aikacen ƙasa mai wuya a cikin MLCCBarium titanateyana ɗaya daga cikin manyan albarkatun ƙasa don kera MLCC. Barium titanate yana da kyawawan kayan lantarki, ferroelectric da dielectric Properties. Barium titanate mai tsafta yana da babban ma'aunin zafin jiki, babban zafin jiki mai zafi da hasara mai yawa, kuma bai dace da amfani kai tsaye ba wajen kera na'urorin yumbura.
Bincike ya nuna cewa abubuwan dielectric na barium titanate suna da alaƙa da tsarin crystal. Ta hanyar doping, tsarin crystal na barium titanate za a iya daidaita shi, don haka inganta kayan aikin dielectric. Wannan shi ne yafi saboda barium titanate mai kyau zai samar da tsarin harsashi bayan doping, wanda ke taka muhimmiyar rawa wajen inganta yanayin zafin jiki na capacitance.
Doping abubuwan da ba kasafai ba a duniya a cikin tsarin barium titanate yana ɗaya daga cikin hanyoyin inganta haɓaka ɗabi'a da amincin MLCC. Ana iya gano bincike kan ƙarancin ion doped barium titanate a farkon shekarun 1960. Bugu da kari na m ƙasa oxides rage motsi na oxygen, wanda zai iya inganta dielectric zafin jiki kwanciyar hankali da lantarki juriya na dielectric tukwane, da kuma inganta yi da amincin kayayyakin. Abubuwan da ba kasafai ake karawa ba sun hada da:yttrium oxide(Y2O3), dysprosium oxide (Farashin 2O3), holium oxide (Ho2O3), da sauransu.
Girman radius na ions ƙasa da ba kasafai ba yana da tasiri mai mahimmanci akan matsayin Curie kololuwar tukwane na tushen barium titanate. Doping na abubuwan da ba kasafai ba tare da radis daban-daban na iya canza sigogin lattice na lu'ulu'u tare da tsarin tushen harsashi, ta haka canza matsi na ciki na lu'ulu'u. Doping na ions ƙasa da ba kasafai tare da radis mafi girma yana haifar da samuwar matakan pseudocubic a cikin lu'ulu'u da ragowar damuwa a cikin lu'ulu'u; Gabatarwar ions na ƙasa da ba kasafai ba tare da ƙananan radis shima yana haifar da ƙarancin damuwa na ciki kuma yana hana canjin lokaci a cikin tsarin tushen harsashi. Ko da ƙananan abubuwan ƙari, halayen oxides na ƙasa da ba kasafai ba, kamar girman barbashi ko siffa, na iya tasiri sosai ga aikin gabaɗaya ko ingancin samfurin. Babban aikin MLCC yana ci gaba da haɓakawa zuwa ƙaranci, babban stacking, babban iya aiki, babban aminci, da ƙarancin farashi. Mafi kyawun samfuran MLCC na duniya sun shiga cikin nanoscale, kuma ƙarancin ƙasa oxides, azaman mahimman abubuwan doping, yakamata su sami girman barbashi nanoscale da tarwatsa foda mai kyau.
Lokacin aikawa: Oktoba-25-2024