Ferro Niobium dị ọcha dị na ngwaahịa
NIOBIUM – Ngwa maka ihe ọhụrụ nwere nnukwu ikike n'ọdịnihu
Niobium bụ ọla na-acha ntụ ntụ na-acha ọcha na-egbukepụ egbukepụ n'elu ebe a na-egbu maramara. E ji ebe mgbaze dị elu nke 2,477°C na njupụta nke 8.58g/cm³ mara ya. Niobium nwere ike ịmepụta ngwa ngwa, ọbụlagodi na obere okpomọkụ. Niobium bụ ductile na-apụta na tantalum n'ime ihe okike. Dị ka tantalum, niobium na-egosipụtakwa kemịkalụ pụtara ìhè na nguzogide oxidation.
| Ngwakọta kemịkalụ%
| Ụdị | ||||
| FeNb70 | FeNb60-A | FeNb60-B | FeNb50-A | FeNb50-B | |
| Nb+Ta | |||||
| 70-80 | 60-70 | 60-70 | 50-60 | 50-60 | |
| Ta | 0.8 | 0.5 | 0.8 | 0.8 | 1.5 |
| Al | 3.8 | 2.0 | 2.0 | 2.0 | 2.0 |
| Si | 1.5 | 0.4 | 1.0 | 1.2 | 4.0 |
| C | 0.04 | 0.04 | 0.05 | 0.05 | 0.05 |
| S | 0.03 | 0.02 | 0.03 | 0.03 | 0.03 |
| P | 0.04 | 0.02 | 0.05 | 0.05 | 0.05 |
| W | 0.3 | 0.2 | 0.3 | 0.3 | - |
| Ti | 0.3 | 0.2 | 0.3 | 0.3 | - |
| Cu | 0.3 | 0.3 | 0.3 | 0.3 | - |
| Mn | 0.3 | 0.3 | 0.3 | 0.3 | - |
| As | 0,005 | 0,005 | 0,005 | 0,005 | - |
| Sn | 0,002 | 0,002 | 0,002 | 0,002 | - |
| Sb | 0,002 | 0,002 | 0,002 | 0,002 | - |
| Pb | 0,002 | 0,002 | 0,002 | 0,002 | - |
| Bi | 0,002 | 0,002 | 0,002 | 0,002 | - |
Nkọwa:
Akụkụ bụ isi nke ferroniobium bụ ígwè alloy nke niobium na ígwè. O nwekwara ihe ndị na-adịghị ọcha dị ka aluminom, silicon, carbon, sọlfọ, na phosphorus. Dịka ọdịnaya niobium nke alloy siri dị, a na-ekewa ya na FeNb50, FeNb60 na FeNb70. Ngwakọta ígwè a na-emepụta na niobium-tantalum ore nwere tantalum, nke a na-akpọ niobium-tantalum iron. Ferro-niobium na niobium-nickel alloys na-eji dị ka niobium mgbakwunye na agụụ smelting nke ígwè dabeere alloys na nickel dabeere alloys. A chọrọ ka ọ nwee obere gas na ihe adịghị emerụ ahụ dị ala, dị ka Pb, Sb, Bi, Sn, As, wdg <2×10, ya mere a na-akpọ ya "VQ" (Vacuum quality), dị ka VQFeNb, VQNiNb; wdg.
Ngwa:
Ferroniobium bụ tumadi eji maka agbaze elu okpomọkụ (okpomọkụ na-eguzogide) alloy, igwe anaghị agba nchara na elu ike obere alloy ígwè. Niobium na-etolite niobium carbide kwụsiri ike nwere carbon n'ime igwe anaghị agba nchara yana nchara na-eguzogide okpomọkụ. Ọ nwere ike igbochi uto ọka na oke okpomọkụ, mee ka nhazi nke ígwè dịkwuo mma, ma melite ike, ike na ihe na-akpụ akpụ nke ígwè.
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