Uea Tungsten: Hoʻohana ʻia ia e hana i nā thermocouples tungsten-rhodium a me nā poʻo i hoʻopili wikiwiki ʻia, nā uea paʻa sapphire, a me nā electrodes no nā lasers nui. Hoʻohana ʻia ia e hana i nā filament kiʻekiʻe a me nā cathodes paipu. I ka makahiki 2005, ua helu ʻia ka uea hoʻohuihui tungsten-rhenium multi-purpose i hoʻomohala ʻia e kā mākou hui ma ke ʻano he huahana kī nui ʻāina e ka Ministry of Science and Technology.
ʻO ka uea thermocouple Tungsten-rhenium he wahi heheʻe o 3120-3360 °C a hiki ke hoʻohana ʻia a hiki i 3000 °C. ʻO ia ka thermocouple metala kūpaʻa loa. Loaʻa iā ia nā pōmaikaʻi o ka pilina laina maikaʻi ma waena o ka mahana a me ka ikaika electromotive, kūpaʻa kūpaʻa kūpono a me ke kumu kūʻai haʻahaʻa. Hoʻohālikelike ʻia me ka mea hana hōʻike. ʻO ka mahana hiki ke ana pololei ʻia ke ana ʻia i kēia manawa ma kahi mahana ma luna o 1600 °C. Hoʻohana pinepine ʻia ke ala pili ʻole. Eia naʻe, nui ka hewa o kēia ʻano. No ka laʻana, hiki i ka wela hoʻopili ke ana pololei i ka mahana maoli. I ke kiʻekiʻe-mehana thermocouples, makamae metala thermocouples (platinum-rhodium thermocouples) he pipiʻi a me ka wela wela hiki wale ma lalo o 1800 °C, oiai tungsten-rhodium thermocouples 'aʻole wale i ka palena wela kiʻekiʻe akā, no laila, tungsten- rhodium thermocouples Hoʻohana nui ia i ka metallurgy, nā mea kūkulu hale, aerospace, aviation a me nā ʻoihana nuklea. Hiki ke piʻi ka mahana hana kiʻekiʻe loa i 2800 ° C, akā ma mua o 2300 ° C, ua hoʻopuehu ʻia ka ʻikepili. ʻO nā thermocouples Tungsten-rhenium ka mea hiki ke hoʻoheheʻe ʻia, no laila hiki ke hoʻohana ʻia i loko o ka ʻenekini, hōʻemi, a i ʻole inert lewa ma nā mahana mai ka 0 a 2300 °C. Hiki ke hoʻohana ʻia nā kāne bismuth Tungsten me nā paipu pale kūikawā no ka manawa lōʻihi i kahi ea oxidizing ma 1600 ° C. ʻoi aku ka liʻiliʻi ma mua o nā thermocouples platinum-rhodium a ʻaʻole hiki ke hoʻohana ʻia i loko o nā ea e loaʻa ai ke kalapona (e like me ka hydrocarbon-containing atmospheres. ʻoi aku ka mahana ma mua o 1200 ° C i ka corrosion). ʻO Tungsten a i ʻole tungsten ruthenium ka mea e hana i nā carbide paʻa i loko o kahi ea i loko o ke kalapona, no laila e hoʻohaʻahaʻa ʻia kona naʻau a hoʻomaka ʻia ka haki ʻana, a ma ke alo o ka hydrogen, ua wikiwiki ka carbonization. ʻO ka hui kūikawā i ka hana ʻana i nā thermocouples anti-oxidation tungsten-rhodium. ʻO ka pae wela kūpono he 0-1500 °C. He paipu pale ʻelua-papa a ʻekolu-papa (ʻaʻole hoʻohana maʻamau). ʻO ka paipu pale o waho o ka ʻōnaehana pale pale pālua ʻo ultra-pure corundum tube. ʻO ka pahu hoʻomalu o loko he paipu silicide molybdenum, a ʻo ka paipu pale o waho o nā lima lima he recrystallized silicon carbide tube a i ʻole kahi paipu corundum maʻemaʻe kūikawā, ʻo ka paipu waena a me ka paipu pale i loko e like me ke ʻano o ka paipu pālua, a. ʻO ka mea hoʻopihapiha hoʻopihapiha he mea hoʻonā wela kiʻekiʻe (hiki paha ke hoʻohana lōʻihi ma lalo o 1800 °C), ka hoʻopaʻa ʻana a me ka hoʻopaʻa ʻana i ke anuanu (hiki ke hoʻohana ʻia ka mea hoʻopaʻa hoʻopaʻa i nā mahana ma lalo o 300 °C no ka manawa lōʻihi) koena oxygen i loko o ka paipu. He kūpono kēia huahana no ka hoʻohana ʻana i loko o ka vacuum, hōʻemi a me nā kinoea inert ʻē aʻe (0 ~ 1650 °C) ʻO ke ana wela kūpono i ka lewa oxidizing he 0 a 1500 °C. Ka manawa mau: ≥180 s