Boron Carbide
Boron Carbide
| Lwm lub npe | Tetrabor |
| Cas No. | 12069-32-8 |
| Tshuaj formula | B4C |
| Molar loj | 55,255 g / mol |
| Qhov tshwm sim | Tsaus grey los yog dub hmoov, tsw tsw |
| Qhov ntom | 2.50 g / cm3, khoom. |
| Melting point | 2,350 ° C (4,260 ° F; 2,620 K) |
| Boiling point | > 3500 ° C |
| Solubility hauv dej | Insoluble |
Mechanical Properties
| Knoop Hardness | 3000kg / hli 2 | |||
| Mohs Hardness | 9.5 + | |||
| Flexural zog | 30 ~ 50 kg / hli 2 | |||
| Compressive | 200 ~ 300 kg / hli 2 | |||
Enterprise Specification rau Boron Carbide
| Yam khoom No. | Purity (B4C%) | Basic Grain (μm) | Tag nrho Boron (%) | Carbide tag nrho (%) |
| UMBC 1 | 96-98 : kuv | 75-250 Nws | 77-80 : kuv | 17-21 : kuv |
| UMBC 2.1 | 95-97 : kuv | 44.5-75 | 76-79 : kuv | 17-21 : kuv |
| UMBC 2.2 | 95-96 : kuv | 17.3-36.5 Nws | 76-79 : kuv | 17-21 : kuv |
| UMBC 3 | 94-95 : kuv | 6.5-12.8 Nws | 75-78 : kuv | 17-21 : kuv |
| UMBC 4 | 91-94 : kuv | 2.5 ~ 5 | 74-78 : kuv | 17-21 : kuv |
| UMBC 5.1 | 93-97 : kuv | Max.250 150 75 45 | 76-81 : kuv | 17-21 : kuv |
| UMBC 5.2 | 97-98.5 Nws | Max. 10 | 76-81 : kuv | 17-21 : kuv |
| UMBC 5.3 | 89-93 : kuv | Max. 10 | 76-81 : kuv | 17-21 : kuv |
| UAS 5.4 | 93-97 : kuv | 0 ~ 3 hli | 76-81 : kuv | 17-21 : kuv |
Boron Carbide (B4C) siv rau dab tsi?
Rau nws hardness:
Cov khoom tseem ceeb ntawm Boron Carbide, uas yog qhov txaus siab rau tus tsim lossis engineer, yog hardness thiab muaj feem xyuam rau abrasive hnav tsis kam. Cov piv txwv zoo tshaj plaws ntawm kev siv cov khoom no suav nrog: Padlocks; Tus kheej thiab lub tsheb tiv thaiv ballistic armor plating; Grit blasting nozzles; High-pressure dej dav hlau cutter nozzles; Kos thiab hnav resistant coatings; Cov cuab yeej txiav thiab tuag; Abrasives; Hlau matrix composites; Nyob rau hauv lub brakes ntawm lub tsheb.
Rau nws toughness:
Boron carbide yog siv los ua Kev Tiv Thaiv Armors los tiv thaiv qhov cuam tshuam ntawm cov khoom ntse xws li mos txwv, shrapnel, thiab missiles. Nws feem ntau ua ke nrog lwm cov khoom sib xyaw thaum ua tiav. Vim nws lub siab tawv, B4C armor nyuaj rau cov mos txwv nkag mus. B4C cov khoom tuaj yeem nqus tau lub zog ntawm cov mos txwv thiab tom qab ntawd dissipates lub zog. Lub nto yuav tawg mus rau hauv me me thiab nyuaj hais tom qab. Kev siv cov khoom siv boron carbide, cov tub rog, tso tsheb hlau luam, thiab cov dav hlau tuaj yeem zam kev raug mob hnyav los ntawm cov mos txwv.
Rau lwm yam khoom:
Boron carbide yog cov khoom siv tswj ntau hauv cov chaw tsim hluav taws xob nuclear rau nws lub peev xwm neutron-absorbing, tus nqi qis, thiab ntau qhov chaw. Nws muaj qhov nqus tau siab hla ntu. Lub peev xwm ntawm boron carbide los nqus cov neutrons yam tsis tsim cov radionuclides ntev ua rau nws txaus nyiam raws li qhov nqus ntawm cov hluav taws xob neutron tshwm sim hauv cov nroj tsuag hluav taws xob nuclear thiab los ntawm cov neeg tawg rog neutron. Boron Carbide yog siv los tiv thaiv, raws li ib tug tswj pas nrig nyob rau hauv lub nuclear reactor thiab raws li kaw pellets nyob rau hauv ib tug nuclear fais fab nroj tsuag.