ʻO ke kumu kūʻai hale kūʻai kūʻai aku i ka pauka Niobium me Nb a me CAS No 7440-03-1 High-Entropy Alloys (HEA)

huikau nui

Hoʻohana ʻia kahi hapa nui o ka niobium o ka honua i ka hana ʻana i ka nickel, chromium a me ka hao-based superalloys ma ke ʻano metala maʻemaʻe a i ʻole ma ke ʻano o ka ferric ferric niobium a me ka niobium nickel alloys. Hoʻohana ʻia kēia mau alloys i nā ʻenekini jet, nā ʻenekini turbine kinoea, nā ʻāpana rocket, turbochargers a me nā mea puhi wela. E hoʻokumu ʻo Niobium i ka pae y i loko o ke ʻano palaoa o superalloy. Loaʻa i kēia mau alloys a hiki i ka 6.5% niobium. ʻO Incone1718 alloy kekahi o nā alloys niobium-nickel, ʻo ka ʻike o kēlā me kēia mea: nickel 50%, chromium 18.6%, hao 18.5%, niobium 5%, kī 3.1%, titanium 0.9% a me aluminika 0.4%. Loaʻa nā noi ma ke ʻano he mea kiʻekiʻe kiʻekiʻe, e like me ka mea i hoʻohana ʻia ma Project Gemini.

Pākuʻi kumu Niobium

ʻO C-103 kahi hui niobium e loaʻa ana i ka 89% niobium, 10% hafnium a me 1% titanium, hiki ke hoʻohana ʻia i nā nozzles propulsion rocket wai, e like me ka mīkini nui o ka module lunar Apollo. Ua hoʻohana ka ʻōnaehana lawelawe ʻo Apollo i kahi hui kālā ʻokoʻa. Ma muli o ka hoʻomaka ʻana o ka niobium e oxidize ma luna o 400 ° C, i mea e pale ʻole ai i ka palupalu, pono e hoʻopili ʻia kahi uhi pale i kona ʻili.

He koʻikoʻi ko Niobium i ka mālama ʻana, ʻaʻole hiki ke hoʻohana wale ʻia no ka hana ʻana i nā lāʻau lapaʻau, akā he "biological adaptive material" maikaʻi nō hoʻi, no ka mea, ʻoi aku ka maikaʻi o ka corrosion, ʻaʻole ia e launa pū me nā mea wai like ʻole i loko o ke kino kanaka. , a aneane ʻaʻole e hōʻino i nā ʻiʻo kino olaola, no ka mea hiki ke hoʻololi ʻia nā ʻano sterilization. No laila hiki iā ia ke hoʻopaʻa i ka ʻiʻo organik no ka manawa lōʻihi a noho maikaʻi ʻole i ke kino.