Ukucoceka okuphezulu kweFerro Niobium kwiStokhwe
I-NIOBIUM -Isixhobo sokwenziwa kwezinto ezintsha ezinokubakho kwixesha elizayo
I-Niobium sisinyithi esikhanyayo esingwevu kunye nenkangeleko emhlophe emenyezelayo kwindawo ekhazimlisiweyo. Ibonakala kwindawo ephezulu yokunyibilika eyi-2,477°C kunye noxinzelelo lwe-8.58g/cm³. I-Niobium inokubunjwa ngokulula, nakwiqondo lokushisa eliphantsi. I-Niobium yi-ductile kwaye yenzeka nge-tantalum kwintsimbi yendalo. Njenge-tantalum, i-niobium ikwabonisa ukuchasana kweekhemikhali kunye ne-oxidation.
| ukwakheka kweekhemikhali%
| Uphawu | ||||
| 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 | - |
Inkcazo:
Icandelo eliphambili le-ferronobium yintsimbi yensimbi ye-niobium kunye nentsimbi. Kwakhona iqulethe ukungcola okufana ne-aluminiyam, i-silicon, i-carbon, isulfure, kunye ne-phosphorus. Ngokomxholo we-niobium we-alloy, ihlulwe ibe yi-FeNb50, i-FeNb60 kunye ne-FeNb70. I-iron alloy eveliswa nge-niobium-tantalum ore iqulethe i-tantalum, ebizwa ngokuba yi-niobium-tantalum iron. I-Ferro-niobium kunye ne-niobium-nickel alloys zisetyenziswa njengezongezo ze-niobium kwi-vacuum smelting ye-iron-based alloys kunye ne-nickel-based alloys. Kudingeka ukuba ube nomxholo wegesi ophantsi kunye nokungcola okuncinci okunobungozi, njengePb, Sb, Bi, Sn, As, njl. <2 × 10, ngoko kuthiwa "VQ" (umgangatho we-vacuum), njengeVQFeNb, VQNiNb, njl.
Isicelo:
I-Ferroniobium isetyenziselwa ukunyibilikisa ubushushu obuphezulu (ubushushu obunganyangekiyo) ingxubevange, intsimbi engatyiwayo kunye namandla aphezulu entsimbi ephantsi. I-Niobium yenza i-niobium carbide ezinzileyo kunye nekhabhoni kwintsimbi engenasici kunye nentsimbi ekwazi ukumelana nobushushu. Inokuthintela ukukhula okuziinkozo kubushushu obuphezulu, icokise ubume bentsimbi, kwaye iphucule amandla, ukuqina kunye neempawu ezirhubuluzayo zentsimbi.
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