Precious Metal Nb ine yakanakisa michina zvivakwa
Tsanangudzo
Niobium, inowanzonzi Nb, isimbi inokosha inoshandiswa zvakanyanya munzvimbo dzakasiyana-siyana dzakadai sekurapa, mhepo, uye indasitiri yenyukireya.Iyo yakanakisa-yepamusoro-tembiricha yezvimiro zvinhu, zvemhuri yerefractory simbi.
Imwe nzira ye niobium inowanzoshandiswa iine niobium powder, iyo inogadzirwa nekuderedza niobium oxide muchoto chekushisa kwepamusoro.Hupfu hunoguma hupfu hwakatsetseka, greyish-black hupfu hune hutsanana hwakanyanya, huchiita kuti ive yakakodzera kune zvakasiyana-siyana zvekushandisa.
Niobium poda ine zvinhu zvakawanda zvinobatsira, senge simba rakakwirira, yakanaka ductility, uye yakanakisa corrosion resistance.Inowanzoshandiswa muupfu metallurgy applications, senge kugadzirwa kwe superalloys, nekuda kwekukwirira kwayo kunyungudika uye kugona kutsungirira tembiricha yakakwira uye nharaunda dzakaomarara.
Munharaunda yezvokurapa, niobium poda inoshandiswa kugadzira mishonga yezvokurapa uye zvigadzirwa nekuda kwehupenyu hwayo uye husina-chepfu.Inoshandiswawo mukugadzirwa kweMRI scanners nekuda kwekuderera kwayo magineti susceptibility.
Muindasitiri yemuchadenga, niobium poda inoshandiswa kugadzira zvikamu zveinjini zvinodziya zvakanyanya, senge rocket nozzles uye zvivharo zvekupisa, nekuda kwekusimba kwayo-ku-huremu reshiyo uye kugona kutsungirira tembiricha yakakwira uye nharaunda dzinoparadza.
Muindasitiri yenyukireya, niobium poda inoshandiswa mukugadzirwa kwemafuta emafuta uye zvigadziriso zvinokonzeresa nekuda kwekugona kwayo kutsungirira tembiricha yakakwira uye nharaunda dzinoparadza.
Pakazere, niobium poda chinhu chakasiyana-siyana uye chakakosha zvinhu zvinopa zvakatanhamara zvivakwa uye zvinogona kushandiswa mumhando dzakasiyana dzekushandisa.
Chemistry
| Element | Nb | O | |
|---|---|---|---|
| Misa (%) | Kuchena ≥99.9 | ≤0.2 | |
Pfuma yenyama
| PSD | Chiyero chekuyerera (sec/50g) | Kuwanda Kunooneka (g/cm3) | Sphericity | |
|---|---|---|---|---|
| 45-105 μm | ≤15s/50g | ≥4.5g/cm3 | ≥90% | |
