Magnesia-yakadzikama zirconia (MSZ) ine kusimba kukuru mukukukurwa uye kuvhunduka kwemafuta. Diki tetragonal phase precipitates inokura mukati me cubic phase tsanga dzeshanduko-yakaomeswa zirconias senge magnesium-yakadzikama zirconia. Apo kuputsika kunoedza kufamba nepakati pezvinhu, izvi zvinoputika zvinoshanduka kubva kune meta-stable tetragonal phase kusvika kune yakagadzikana monoclinic phase. Mvura inonaya inowedzera semhedzisiro, ichidzikamisa nzvimbo yekutyoka uye kuwedzera kuoma. Nekuda kwekusiyana kwemagadzirirwo akagadzirwa, MSZ inogona kunge iri yenzou kana yero-orenji muruvara. MSZ, inova nenyanga dzenzou muruvara, yakachena uye ine hunhu hwepamusoro-soro. Mutembiricha yepamusoro (220°C nepamusoro) uye nekunyorova kwepamusoro, MSZ yakagadzikana kupfuura YTZP, uye YTZP inowanzo deredza. Kunze kwezvo, MSZ ine yakaderera yekupisa conductivity uye CTE yakafanana nesimbi yakakandwa, kudzivirira kusawirirana kwemafuta muceramic-to-metal masisitimu.
Properties
High mechanical simba
High fracture toughness
High tembiricha kuramba
High kupfeka kuramba
High kukanganisa kuramba
Good thermal shock resistance
Kunyanya kuderera kwekushisa conductivity
Kuwedzera kwekushisa kwakakodzera kune ceramic-to-metal magungano
Yakakwira makemikari kuramba (asidhi uye mabhesi)
Applications
Magnesia-yakadzikama zirconia inogona kushandiswa mumavharuvhu, pombi, uye gaskets nekuti ine yakanakisa kupfeka uye kusaita ngura. Iyo zvakare ndiyo yakasarudzika zvinhu zvepetrochemical uye makemikari ekugadzirisa zvikamu. Zirconia ceramics isarudzo huru kune akawanda masekete, kusanganisira:
Zvigadzirwa zvekeramics
Bearings
Pfeka zvikamu
Pfeka maoko
Pfapfaidza nozzles
Pombi maoko
Pfaya pistons
Bushings
Solid oxide fuel cell parts
MWD zvishandiso
Roller madhairekitori ekugadzira chubhu
Zvakadzika zvakanaka, downhole zvikamu
Magnesia-Yakadzikama Zirconia Machining
Munzvimbo dzayo dzegirinhi, bhisikiti, kana kuti dense zvizere, MSZ inogona kugadzirwa. Kana iri yegirinhi kana bhiscuit, inogona kugadzirwa kuita majeometri akaoma kunzwisisa zviri nyore. Muviri we zirconia unodzikira nekutenderedza 20% panguva yekunyura, izvo zvinodiwa kuti zvinyatso densify zvinhu. Nekuda kwe kuderera uku, zirconia pre-sintering haigone kugadzirwa nekushivirira kwakanyanya. Iyo yakazara sintered zvinhu zvinofanirwa kugadzirwa kana kukwidziridzwa nemidziyo yedhaimondi kuitira kuti iwane kushivirira kwakanyanya. Muunyanzvi hwekugadzira uhu, zvinhu zvinokuyiwa nekushandisa mudziyo wakanakisiswa nedhaimondi kana vhiri kusvikira fomu rinodiwa rawanikwa. Izvi zvinogona kutora nguva uye zvinodhura maitiro nekuda kwekuoma kwezvinhu uye kuoma kwezvinhu.
