碳化硼( B4C )是透過在電爐中高溫冶煉硼助劑和碳材料而製成的 。
碳化硼( B4C)的化學組成 與物理性質
| 碳化硼 B4C 化學成分(%) | ||
| B% | 78-81 | |
| C% | 17-22 | |
| Fe₂O₃ % | 0.2-0.4 | |
| B 4 C% | 97-99 | |
| 碳化硼 (B4C) 的物理性質 | ||
| 顏色 | 黑色的 | |
| 分子式 | B4C | |
| 密度與相 | 2.52克/立方公分固體 | |
| 水中溶解度 | 不溶物 | |
| 熔點 | 2450°C | |
| 沸點 | 3500°C | |
| 晶體結構 | 菱面體 | |
| 莫氏硬度 | 9.6 | |
| 顯微硬度 | 4950kgf/mm² | |

| 碳化硼的粒徑分佈(FEPA) | |||||||||||||||
| 粒徑 | 最粗尺寸 | 粗粒 | 基本尺寸 | 混合尺寸 | 粗粒 | ||||||||||
| 篩孔尺寸 | 殘留物 | 篩孔尺寸 | 殘留物 | 篩孔尺寸 | 殘留物 | 篩孔尺寸 | 殘留物 | 篩孔尺寸 | 殘留物 | ||||||
| 毫米 | 微米 | 篩分百分比 | 毫米 | 微米 | 篩分百分比 | 毫米 | 微米 | 篩分百分比 | 毫米 | 微米 | 篩分百分比 | 毫米 | 微米 | 篩分百分比 | |
| F4 | 8 | – | 0 | 5.6 | – | 20 | 4.75 | – | 40 | 4.75~4.00 | – | 70 | 3.35 | – | 3 |
| F5 | 6.7 | – | 0 | 4.75 | – | 20 | 4 | – | 40 | 4.00~3.35 | – | 70 | 2.8 | – | 3 |
| F6 | 5.6 | – | 0 | 4 | – | 20 | 3.35 | – | 40 | 3.35~2.80 | – | 70 | 2.36 | – | 3 |
| F7 | 4.75 | – | 0 | 3.35 | – | 20 | 2.8 | – | 40 | 2.80~2.36 | – | 70 | 2 | – | 3 |
| F8 | 4 | – | 0 | 2.8 | – | 20 | 2.36 | – | 45 | 2.36~2.00 | – | 70 | 1.7 | – | 3 |
| F10 | 3.35 | – | 0 | 2.36 | – | 20 | 2 | – | 45 | 2.00~1.70 | – | 70 | 1.4 | – | 3 |
| F12 | 2.8 | – | 0 | 2 | – | 20 | 1.7 | – | 45 | 1.70~1.40 | – | 70 | 1.18 | – | 3 |
| F14 | 2.36 | – | 0 | 1.7 | – | 20 | 1.4 | – | 45 | 1.40~1.18 | – | 70 | 1 | – | 3 |
| F16 | 2 | – | 0 | 1.4 | – | 20 | 1.18 | – | 45 | 1.18~1.00 | – | 70 | – | 850 | 3 |
| F20 | 1.7 | – | 0 | 1.18 | – | 20 | 1 | – | 45 | 1 | 850 | 70 | – | 710 | 3 |
| F22 | 1.4 | – | 0 | 1 | – | 20 | – | 850 | 45 | – | 850~710 | 70 | – | 600 | 3 |
| F24 | 1.18 | – | 0 | – | 850 | 25 | – | 710 | 45 | – | 710~600 | 65 | – | 500 | 3 |
| F30 | 1 | – | 0 | – | 710 | 25 | – | 600 | 45 | – | 600~500 | 65 | – | 425 | 3 |
| F36 | – | 850 | 0 | – | 600 | 25 | – | 500 | 45 | – | 500~425 | 65 | – | 355 | 3 |
| F40 | – | 710 | 0 | – | 500 | 30 | – | 425 | 40 | – | 425~355 | 65 | – | 300 | 3 |
| F46 | – | 600 | 0 | – | 425 | 30 | – | 355 | 40 | – | 355~300 | 65 | – | 250 | 3 |
| F54 | – | 500 | 0 | – | 355 | 30 | – | 300 | 40 | – | 300~250 | 65 | – | 212 | 3 |
| F60 | – | 425 | 0 | – | 300 | 30 | – | 250 | 40 | – | 250~212 | 65 | – | 180 | 3 |
| F70 | – | 355 | 0 | – | 250 | 25 | – | 212 | 40 | – | 212~180 | 65 | – | 150 | 3 |
| F80 | – | 300 | 0 | – | 212 | 25 | – | 180 | 40 | – | 180~150 | 65 | – | 125 | 3 |
| F90 | – | 250 | 0 | – | 180 | 20 | – | 150 | 40 | – | 150~125 | 65 | – | 106 | 3 |
| F100 | – | 212 | 0 | – | 150 | 20 | – | 125 | 40 | – | 125~106 | 65 | – | 75 | 3 |
| F120 | – | 180 | 0 | – | 125 | 20 | – | 106 | 40 | – | 106~90 | 65 | – | 63 | 3 |
| F150 | – | 150 | 0 | – | 106 | 15 | – | 75 | 40 | – | 75~63 | 65 | – | 45 | 3 |
| F180 | – | 125 | 0 | – | 90 | 15 | – | 63 | 40 | – | 63~53 | 65 | – | – | – |
| F220 | – | 106 | 0 | – | 75 | 15 | – | 53 | 40 | – | 53~45 | 60 | – | – | – |




