Lanthanate tungsten Aloyi ndodo
Kufotokozera
Lanthanate tungsten ndi oxidized lanthanum doped tungsten alloy, yomwe ili m'gulu la oxidized rare earth tungsten (W-REO).Pamene omwazika lanthanum okusayidi anawonjezedwa, lanthanated tungsten amasonyeza kumawonjezera kutentha, madutsidwe matenthedwe, kukana zokwawa, ndi mkulu recrystallization kutentha.Zinthu zabwinozi zimathandiza ma elekitirodi a tungsten opangidwa ndi lanthanated kuti azitha kuchita bwino kwambiri pakuyambira kwa arc, kukana kukokoloka kwa arc, komanso kukhazikika kwa arc komanso kukhazikika.
Katundu
Ma elekitirodi osowa kwambiri a earth oxide doped tungsten, monga W-La2O3 ndi W-CeO2, ali ndi mikhalidwe yambiri yowotcherera.Ma elekitirodi osowa kwambiri a Earth oxide doped tungsten amayimira zinthu zabwino kwambiri pakati pa ma elekitirodi a Gas Tungsten Arc Welding (GTAW), yomwe imadziwikanso kuti Tungsten Inert Gas (TIG) welding ndi Plasma Arc Welding (PAW).Ma oxides omwe amawonjezeredwa ku tungsten amawonjezera kutentha kwa recrystallization ndipo, nthawi yomweyo, amalimbikitsa kuchuluka kwa mpweya pochepetsa ntchito ya electron ya tungsten.
| Oxide Rare Earth Katundu Ndi Mapangidwe Mu Tungsten Aloyi | ||||
| Mtundu wa oxides | ThO2 | La2O3 | CeO2 | Y2O3 |
| Malo osungunuka oC | 3050 (Th: 1755) | 2217 (La: 920) | 2600 (Ce: 798) | 2435(Y: 1526) |
| Kutentha kwa kuwonongeka.Kj | 1227.6 | 1244.7 | (523.4) | 1271.1 |
| Mtundu wa oxides pambuyo sintering | ThO2 | La2O3 | CeO2(1690)oC | Y2O3 |
| Zochita ndi tungsten | Kuchepetsa kwa ThO2by W kumachitika.kupanga Th. | Kupanga tungstate ndi oxytungstate | Kupanga tungstate | Kupanga tungstate |
| Kukhazikika kwa oxides | Kukhazikika pansi | Kukhazikika kwapamwamba | Kukhazikika koyenera m'mphepete mwa elekitirodi koma kutsika pang'ono pansonga | Kukhazikika kwakukulu |
| Kulemera kwa oxide% | 0.5-3 | 1-3 | 1-3 | 1-3 |
Mawonekedwe
Zogulitsa zathu za tungsten zomwe zili ndi lanthanated zikuphatikizapo WLa10 (La2O3 1-1.2 wt.%), WLa15 (La2O3 1.5-1.7 wt.%), ndi WLa20 (La2O3 2.0-2.3 wt.%).Ndodo zathu za tungsten zokhala ndi lanthanated ndi makina opangidwa ndi makina amakumana ndi zofunikira zosiyanasiyana komanso miyezo yosiyanasiyana ya ntchito.Timapereka ma elekitirodi a tungsten a lanthanated a Tungsten Inert Gas (TIG) kuwotcherera, kuwotcherera osamva, ndi kupopera mbewu mankhwalawa kwa plasma.Timaperekanso ndodo zazikulu za WLa kuti zigwiritsidwe ntchito mu zigawo za semiconductor ndi ng'anjo zotentha kwambiri.
Mapulogalamu
Ma elekitirodi owotcherera a WLa TIG ndi osavuta kuyambitsa komanso olimba kwambiri.Ma electrode opopera a plasma a WLa amawonetsa kukana kukokoloka kwa arc komanso kutentha kwambiri komanso kukhala ndi kutentha kwapamwamba.Ma elekitirodi a WLa resistance ali ndi malo osungunuka kwambiri ndipo amapereka kukhazikika kwapadera kogwira ntchito.
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