INano magnesium oxide yialkaline oxide eqhelekileyo.Ngenxa yeqondo eliphezulu lokunyibilika kwe-2800 ° C kunye nezinye iimpawu ezikhethekileyo kunye nezigqwesileyo, zingasetyenziselwa kwintsimi ye-ceramic ephezulu.Ngokubhekiselele kwisicelo, inokwahlulwa ibe ziindlela ezimbini: i-sintering ngqo kwi-ceramics kwaye isetyenziswe njenge-sintering aid kwezinye ii-ceramics.
I-sintering ngokuthe ngqo kwi-ceramics
INano magnesium oxide yeyona nto ibalaseleyo yeceramic ekrwada.Ngenxa yokumelana nobushushu obulungileyo kunye nokuchasana okunamandla kukhukuliseko ngezisombululo zetsimbi ye-alkaline, ii-ceramics ze-magnesium oxide zihlala zifanelekile kwiindawo eziphezulu zokushisa.Ingasetyenziselwa njenge-crucible yokunyibilikisa isinyithi, kwaye kwishishini lamandla e-athomu likwafanelekile ukunyibilikisa i-uranium ephezulu kunye ne-thorium.Inokusetyenziswa kwakhona njengemikhono ekhuselayo ye-thermocouples.Kuba inepropathi yokuvumela amaza e-electromagnetic ukuba adlule, inokusetyenziswa njengesigqubuthelo serada kunye nemathiriyeli yefestile ebonisa imitha ye-infrared.Ikwayimathiriyeli ekrwada ye-piezoelectric kunye ne-superconducting materials, kwaye ihambelana nokusingqongileyo kwaye iyamelana nelothe.Ingaphinda isetyenziswe njenge-ceramic sintering carrier, ngokukodwa ukhuseleko lwe-sintering yeemveliso ze-ceramic ezifana ne-β-Al2O3 enezinto ezinobungozi kunye neziguquguqukayo kumaqondo okushisa aphezulu.
Isetyenziswa njengento yokuncedisa kwezinye iiseramikhi
I-Nano magnesium oxide inokongezwa kwinkqubo yokulungiselela ezinye iiseramics, enefuthe elihle ekunciphiseni ubushushu beglasi yokutshintsha, ukuthoba iqondo lobushushu le-sintering, kunye nokuphucula iipropathi ze-optical kunye noomatshini be-ceramics, ngaloo ndlela isinceda ukuba sifumane izixhobo ezikumgangatho ophezulu. .
Umzekelo, i-silicon nitride ceramics iye yaba yenye yezona zinto zithembisayo zolwakhiwo lobushushu obuphezulu ngenxa yamandla azo aphezulu obushushu, ukuxhathisa ukothuka kwe-thermal, kunye nokuzinza kweekhemikhali.Nangona kunjalo, ibhondi yayo eyomeleleyo ye-covalent kunye ne-low diffusion coefficient yenza kube nzima ukuxinana kwe-sinter.Ukongezwa kwe-magnesium oxide kunokusabela kunye ne-silica kumphezulu we-silicon nitride powder ngexesha le-sintering ukwenza i-silicate liquid phase, enokukhuthaza ngokufanelekileyo ukufakwa kwe-silicon nitride ceramics.Okwangoku, i-MgO-Y2O3 i-sintering aid ehlanganisiweyo isetyenziswa ngokubanzi ukufikelela kwi-atmospheric sintering ye-silicon nitride ceramics.
Isishwankathelo, i-nano magnesium oxide idlala indima ebalulekileyo kwintsimi ye-ceramic.Inokuthi isebenze njengento esisiseko okanye isongezo sokuphucula ukusebenza kunye nokusebenza kweekeramics, ngaloo ndlela kukhuthazwa inkqubela phambili kunye nophuhliso lweshishini le-ceramic.
Ixesha lokuposa: Jul-14-2023