Boron hmoov
| Boron | |
| Qhov tshwm sim | Dub-xim av |
| Phase ntawm STP | Khoom |
| Melting point | 2349 K (2076 ° C, 3769 ° F) |
| Boiling point | 4200 K (3927 ° C, 7101 ° F) |
| Ceev thaum ua kua (ntawm mp) | 2.08g / cm3 |
| Kub ntawm fusion | 50.2 kJ / mol |
| Kub ntawm vaporization | 508 kJ / mol |
| Molar tshav kub muaj peev xwm | 11.087 J/(mol·K) |
Boron yog cov khoom siv hlau, muaj ob lub allotropes, amorphous boron thiab crystalline boron. Amorphous boron yog xim av hmoov thaum crystalline boron yog silvery rau dub. Crystalline boron granules thiab boron pieces yog siab purity boron, tsis tshua muaj zog, thiab tsis zoo conductor nyob rau hauv chav tsev kub.
Crystalline Boron
Cov ntaub ntawv siv lead ua ntawm crystalline boron feem ntau yog β-form, uas yog tsim los ntawm β-form thiab γ-form rau hauv lub voos xwmfab los tsim cov qauv siv lead ua ruaj khov. Raws li ib txwm tshwm sim crystalline boron, nws abundance yog tshaj 80%. Cov pa particle loj ntawm crystalline boron hmoov tsim thiab kho los ntawm peb lub tuam txhab yog 15-60μm; cov pa particle loj ntawm crystalline boron hais yog 1-10 hli (tshwj xeeb particle loj tuaj yeem kho raws li cov neeg siv khoom xav tau). Feem ntau, nws tau muab faib ua tsib qhov tshwj xeeb raws li purity: 2N, 3N, 4N, 5N, thiab 6N.
Crystal Boron Enterprise Specification
| Hom | B cov ntsiab lus (%) ≥ | Cov ntsiab lus impurity (PPM) ≤ | ||||||||||
| Fe | Au | Ag | Cu | Sn | Mn | Ca | As | Pb | W | Ge | ||
| UAS 6N | 99.99 9 | 0.5 | 0.02 ib | 0.03 ib | 0.03 ib | 0.08 ib | 0.07 ib | 0.01 ib | 0.01 ib | 0.02 ib | 0.02 ib | 0.04 ib |
| UMCB 5 N | 99.999 ib | 8 | 0.02 ib | 0.03 ib | 0.03 ib | 0.1 | 0.1 | 0.1 | 0.08 ib | 0.08 ib | 0.05 Nws | 0.05 Nws |
| UAS 4N | 99.99 ib | 90 | 0.06 ib | 0.3 | 0.1 | 0.1 | 0.1 | 1.2 | 0.2 | |||
| UA 3N | 99.9 ua | 200 | 0.08 ib | 0.8 ua | 10 | 9 | 3 | 18 | 0.3 | |||
| UAS 2N | 99 | 500 | 2.5 | 1 | 12 | 30 | 300 | 0.08 ib | ||||
Pob: Feem ntau nws yog ntim rau hauv polytetrafluoroethylene fwj thiab kaw nrog inert roj, nrog specifications ntawm 50g / 100g / lub raj mis;
Amorphous Boron
Amorphous boron tseem hu ua non-crystalline boron. Nws daim ntawv siv lead ua yog α-puab, teej tug mus rau tetragonal siv lead ua qauv, thiab nws cov xim yog xim dub los yog daj me ntsis. Amorphous boron hmoov tsim thiab kho los ntawm peb lub tuam txhab yog cov khoom lag luam siab. Tom qab ua tiav, cov ntsiab lus boron tuaj yeem ncav cuag 99%, 99.9%; cov pa particle loj yog D50≤2μm; Raws li qhov tshwj xeeb particle loj xav tau ntawm cov neeg siv khoom, sub-nanometer hmoov (≤500nm) tuaj yeem ua tiav thiab kho.
Amorphous Boron Enterprise Specification
| Hom | B cov ntsiab lus (%) ≥ | Cov ntsiab lus impurity (PPM) ≤ | |||||||
| Fe | Au | Ag | Cu | Sn | Mn | Ca | Pb | ||
| UA 3N | 99.9 ua | 200 | 0.08 ib | 0.8 ua | 10 | 9 | 3 | 18 | 0.3 |
| UAS 2N | 99 | 500 | 2.5 | 1 | 12 | 30 | 300 | 0.08 ib | |
Pob: Feem ntau, nws tau ntim rau hauv lub tshuab nqus tsev aluminium foil hnab nrog cov lus qhia ntawm 500g / 1kg (nano hmoov tsis yog nqus);
Isotope IB
Lub ntuj abundance ntawm isotope ¹¹B yog 80.22%, thiab nws yog ib tug high-zoo dopant thiab diffuser rau semiconductor nti cov ntaub ntawv. Raws li ib tug dopant, ¹¹B tuaj yeem ua silicon ions ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom microchips, thiab muaj txiaj ntsig zoo rau kev txhim kho kev tiv thaiv hluav taws xob cuam tshuam ntawm cov khoom siv semiconductor. ¹¹B isotope tsim thiab kho los ntawm peb lub tuam txhab yog lub cubic β-shaped crystal isotope nrog siab purity thiab siab abundance, thiab yog ib qho tseem ceeb raw khoom rau high-end chips.
Isotope¹¹B Enterprise Specification
| Hom | B cov ntsiab lus (%) ≥) | Kev nplua nuj (90%) | Particle loj (mm) | Lus ceeb toom |
| UMIB 6N | 99.99 9 | 90 | ≤ 2 | Peb tuaj yeem kho cov khoom lag luam nrog ntau qhov sib txawv thiab particle loj raws li cov neeg siv khoom xav tau |
Pob: Ntim hauv polytetrafluoroethylene lub raj mis, ntim nrog inert roj tiv thaiv, 50g / lub raj mis;
Isotope ºB
Lub ntuj abundance ntawm isotope ¹ºB yog 19.78%, uas yog ib qho zoo heev nuclear shielding khoom, tshwj xeeb tshaj yog nrog zoo absorbed nyhuv ntawm neutrons. Nws yog ib qho ntawm cov khoom siv raw khoom hauv kev lag luam nuclear. Lub ¹ºB isotope tsim thiab tsim los ntawm peb lub tuam txhab belongs rau cubic β-shaped crystal isotope, uas muaj qhov zoo ntawm purity siab, siab abundance thiab yooj yim ua ke nrog hlau. Nws yog cov khoom siv tseem ceeb ntawm cov cuab yeej tshwj xeeb.
Isotope¹ºB Enterprise Specification
| Hom | B cov ntsiab lus (%) ≥) | Kev nplua nuj (%) | Particle loj (μm) | Particle loj (μm) |
| UMIB 3N | 99.9 ua | 95, 92, 90, 78 ib | ≥60 | Peb tuaj yeem kho cov khoom lag luam nrog ntau qhov sib txawv thiab particle loj raws li cov neeg siv khoom xav tau |
Pob: Ntim hauv polytetrafluoroethylene lub raj mis, ntim nrog inert roj tiv thaiv, 50g / lub raj mis;
Dab tsi yog Amorphous boron, Boron hmoov thiab Ntuj boron siv rau?
Muaj ntau daim ntawv thov rau Amorphous boron, Boron hmoov thiab Ntuj boron. Lawv siv hauv metallurgy, electronics, tshuaj, ceramics, nuclear kev lag luam, tshuaj lom neeg kev lag luam thiab lwm yam kev lag luam.
1. Amorphous boron yog siv nyob rau hauv kev lag luam automotive ua ib qho igniter nyob rau hauv airbags thiab txoj siv tawv tighteners. Amorphous boron yog siv nyob rau hauv pyrotechnics thiab rockets raws li ib tug additive nyob rau hauv flares, igniters thiab ncua compositions, khoom propellant fuels, thiab explosives. Nws muab cov flares ib qho txawv ntsuab xim.
2. Ntuj boron yog tsim los ntawm ob lub isotopes ruaj khov, ib qho (boron-10) muaj ntau yam siv los ua tus neeg sawv cev ntawm neutron-capturing. Nws yog siv los ua neutron absorber hauv kev tswj cov reactor nuclear, thiab hluav taws xob hardening.
3. Elemental boron yog siv los ua dopant hauv kev lag luam semiconductor, thaum boron tebchaw ua lub luag haujlwm tseem ceeb xws li cov khoom siv teeb pom kev zoo, tshuaj tua kab thiab tshuaj tua kab mob, thiab cov tshuaj reagents rau tshuaj synthesis.
4. Boron hmoov yog ib hom roj hlau uas muaj siab gravimetric thiab volumetric calorific qhov tseem ceeb, uas tau dav siv nyob rau hauv cov tub rog teb xws li khoom propellants, high-zog explosives, thiab pyrotechnics. Thiab qhov kub ntawm qhov hluav taws kub ntawm boron hmoov yog txo qis heev vim nws cov duab tsis zoo thiab thaj chaw loj tshwj xeeb;
5. Boron hmoov yog siv los ua cov khoom siv alloy hauv cov khoom siv hlau tshwj xeeb los tsim cov alloys thiab txhim kho cov khoom siv ntawm cov hlau. Nws tseem tuaj yeem siv los ua cov tungsten xov hlau los yog ua cov khoom hauv cov khoom sib xyaw nrog cov hlau lossis ceramics. Boron feem ntau siv nyob rau hauv cov hom phiaj tshwj xeeb alloys rau harden lwm yam hlau, tshwj xeeb tshaj yog kub-kub brazing alloys.
6. Boron hmoov yog siv los ua deoxidizer hauv oxygen-dawb tooj liab smelting. Ib qho me me ntawm boron hmoov yog ntxiv thaum lub sij hawm cov txheej txheem hlau smelting. Ntawm ib sab, nws yog siv los ua deoxidizer los tiv thaiv cov hlau los ntawm oxidized ntawm qhov kub thiab txias. Boron hmoov yog siv los ua ib qho additive rau magnesia-carbon bricks siv nyob rau hauv kub kub furnaces rau steelmaking;
7. Boron Powders kuj tseem siv tau rau txhua daim ntawv thov qhov chaw siab saum npoo yog xav tau xws li kev kho dej thiab hauv cov roj cell thiab daim ntawv thov hnub ci. Nanoparticles kuj tsim cov chaw siab heev.
8. Boron hmoov kuj yog ib qho tseem ceeb raw khoom rau kev tsim cov high-purity boron halide, thiab lwm yam boron compound raw khoom; Boron hmoov kuj tuaj yeem siv los ua kev pabcuam vuam; Boron hmoov yog siv los ua tus pib rau lub tsheb airbags;
