碳化硅产品介绍

 碳化硅是用石英砂、石油焦（或煤焦）、木屑（生产绿色碳化硅时需要加食盐）等原料在电阻炉内经高温冶炼而成。在当代C、N、B等非氧化物高技术耐火原料中，碳化硅为应用较广泛、经济的一种，可以称为金钢砂或耐火砂。 目前我国工业生产的碳化硅分为黑色碳化硅和绿色碳化硅两种，均为六方晶体，比重为3.20～3.25，显微硬度为2840～3320kg/mm2 。

碳化硅有黑碳化硅和绿碳化硅两个常用的基该品种，都属α-SiC。

①黑碳化硅含SiC约95%，其韧性高于绿碳化硅，大多用于加工抗张强度低的材料，如玻璃、陶瓷、石材、耐火材料、铸铁和有色金属等。

②绿碳化硅含SiC约97%以上，自锐性好，大多用于加工硬质合金、钛合金和光学玻璃，也用于珩磨汽缸套和精磨高速钢刀具。此外还有立方碳化硅，它是以特殊工艺制取的黄绿色晶体，用以制作的磨具适于轴承的超精加工，可使表面粗糙度从Ra32～0.16微米一次加工到Ra0.04～0.02微米。   

Silicon carbide is quartz sand and petroleum coke (or coal), wood chips (green silicon carbide production need to add salt) and other raw materials in the resistance furnace processed. In the modern C, N, B, and other non oxide high - tech refractory raw materials, silicon carbide is the most widely used and the most economical one, can be called steel sand or refractory sand.

Silicon carbide has black silicon carbide and green silicon carbide two commonly used basis for the species, are a -SiC.

Black silicon carbide containing SiC about 95%, its toughness is higher than that of green silicon carbide, are mostly used for processing of low tensile strength of materials, such as glass, ceramics, stone, refractory, cast iron and non-ferrous metals, etc..

The green silicon carbide containing SiC is about more than 97%, good self sharpening, mostly used in processing hard alloy, titanium alloy and optical glass, also used for honing cylinder liners and grinding high-speed steel cutting tools.

碳化硅理化指标