碳化硅

碳化硅用途

由于其高热稳定性及高强度、高热传导性等特性，广泛应用于原子能材料、化学装置、高温处理、电加热原件及电阻器等中。用于磨料、磨具、高级耐火材料、精细陶瓷。
用于磨料、耐磨剂、磨具、高级耐火材料，精细陶瓷。
适用于制造各种用途的碳化硅磨具和陶瓷窑具以及耐火材料等
用于磨料磨具、高级耐火材料、精细陶瓷等
用作树脂、金属等复合材料的补强纤维，亦可作电波吸收材料及耐热材料。
用作复合材料的增强材料，起到等方向性增强作用。与塑料、金属、陶瓷构成复合材料可改善各种特性。可与热塑性、热固性树脂构成复合材料，显著地提高塑料的强度、弹性模量、热传导性、耐磨性等。在PEEK中添加15%碳化硅晶须，热传导性提高大约2倍，用20%碳化硅强化的聚酰亚胺的抗挠强度在常温下提高大约2倍，在250℃的高温下与常温下未增强的情况相同。在环氧树脂中添加15%碳化硅时，磨损量降低17%。

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碳化硅名称

[ CAS 号 ]:
409-21-2

[ 中文名 ]:
碳化硅

[ 英文名 ]:
Silicon carbide

[中文别名 ]:

[英文别名 ]:

uf15
ua1
ua3
ua2
ua4
SiC
kz5m
EINECS 206-991-8
kz7m
MFCD00049531

碳化硅物理化学性质

[ 密度 ]:
3.22

[ 熔点 ]:
2700ºC

[ 分子式 ]:
CSi

[ 分子量 ]:
40.096

[ 精确质量 ]:
39.976925

[ 外观性状 ]:
淡灰色粉末

[ 折射率 ]:
2.65

[ 储存条件 ]:
室温

[ 稳定性 ]:
Stability

[ 水溶解性 ]:
Soluble in molten sodium hydroxide, potassium hydroxide and in molten iron. | Soluble in molten alkalis (NaOH, KOH) and molten iron. Insoluble in water.

碳化硅MSDS

详细MSDS(安全技术说明书)

碳化硅毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: VW0450000

CHEMICAL NAME :: Silicon carbide

CAS REGISTRY NUMBER :: 409-21-2

LAST UPDATED :: 199712

DATA ITEMS CITED :: 30

MOLECULAR FORMULA :: C-Si

MOLECULAR WEIGHT :: 40.10

WISWESSER LINE NOTATION :: .SI..C

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 60 mg/m3/6H/13W-I

TOXIC EFFECTS :: Lungs, Thorax, or Respiration - changes in lung weight

REFERENCE :: FAATDF Fundamental and Applied Toxicology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1981- Volume(issue)/page/year: 16,128,1991 ** TUMORIGENIC DATA **

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 300 mg/kg/26W-I

TOXIC EFFECTS :: Tumorigenic - equivocal tumorigenic agent by RTECS criteria Gastrointestinal - tumors

REFERENCE :: EKSODD Eksperimental'naya Onkologiya. Experimental Oncology. (V/O Mezhdunarodnaya Kniga, 113095 Mosow, USSR) V.1- 1979- Volume(issue)/page/year: 11(2),13,1989

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Implant

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 200 mg/kg

REFERENCE :: JJIND8 JNCI, Journal of the National Cancer Institute. (Washington, DC) V.61-79, 1978-87. For publisher information, see JNCIEQ. Volume(issue)/page/year: 67,965,1981 *** REVIEWS *** ACGIH TLV-Not classifiable as a human carcinogen DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 ACGIH TLV-TWA 10 mg/m3, total dust DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 *** U.S. STANDARDS AND REGULATIONS *** MSHA STANDARD:NUISANCE PARTICULATES DTLWS* "Documentation of the Threshold Limit Values for Substances in Workroom Air," Supplements. For publisher information, see 85INA8. Volume(issue)/page/year: 3,28,1973 OSHA PEL (Gen Indu):8H TWA 15 mg/m3, total dust CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1910.1000,1994 OSHA PEL (Gen Indu):8H TWA 5 mg/m3, respirable fraction CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1910.1000,1994 OSHA PEL (Construc):8H TWA 15 mg/m3, total dust CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1926.55,1994 OSHA PEL (Construc):8H TWA 5 mg/m3, respirable fraction CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1926.55,1994 OSHA PEL (Shipyard):8H TWA 15 mg/m3, total dust CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1915.1000,1993 OSHA PEL (Shipyard):8H TWA 5 mg/m3, respirable fraction CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1915.1000,1993 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-AUSTRALIA:TWA 10 mg/m3 JAN 1993 OEL-BELGIUM:TWA 10 mg/m3 JAN 1993 OEL-FRANCE:TWA 10 mg/m3 JAN 1993 OEL-GERMANY:TWA 4 mg/m3 JAN 1993 OEL-THE NETHERLANDS:TWA 10 mg/m3 JAN 1993 OEL-SWITZERLAND:TWA 4 mg/m3 JAN 1993 OEL-UNITED KINGDOM:TWA 10 mg/m3 (total dust) JAN 1993 OEL-UNITED KINGDOM:TWA 5 mg/m3 (resp. dust) JAN 1993 OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO SILICON CARBIDE, resp. fraction-air:10H TWA 5 mg/m3 REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992 NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO SILICON CARBIDE, total dust-air:10H TWA 10 mg/m3 REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992 NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 17525 No. of Facilities: 25235 (estimated) No. of Industries: 184 No. of Occupations: 97 No. of Employees: 268082 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X4228 No. of Facilities: 158 (estimated) No. of Industries: 4 No. of Occupations: 12 No. of Employees: 8693 (estimated) No. of Female Employees: 84 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X6494 No. of Facilities: 1250 (estimated) No. of Industries: 25 No. of Occupations: 22 No. of Employees: 17481 (estimated) No. of Female Employees: 1482 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 17525 No. of Facilities: 13729 (estimated) No. of Industries: 129 No. of Occupations: 97 No. of Employees: 250945 (estimated) No. of Female Employees: 19568 (estimated)

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碳化硅安全信息

[ 个人防护装备 ]:
dust mask type N95 (US);Eyeshields;Gloves

[ 危害码 (欧洲) ]:
Xi:Irritant;

[ 风险声明 (欧洲) ]:
R36/37/38

[ 安全声明 (欧洲) ]:
S26-S36

[ 危险品运输编码 ]:
NONH for all modes of transport

[ WGK德国 ]:
3

[ RTECS号 ]:
VW0450000

[ 海关编码 ]:
2849200000

碳化硅制备

由砂与适量的碳放在电炉中加热而得。图XIV-8 Lely电炉 A-石墨圆筒；B-绝热区；C-石墨棒；D-石墨发热体；E-单晶成长坩埚；F-测温用观察缝；G-测温窗二氧化硅碳化还原法把平均粒径0.01 μm的二氧化硅粉末1份（重量份，以下同）与平均粒径0.05 μm的炭粉末2份及平均粒径0.1 μm以下的微细结晶性β型碳化硅粉末0.0４份混合，然后放入石墨容器中，在氩气流下（流量：2 L/min），在1600℃反应5ｈ，再将反应生成物在空气中，在700　℃加热2ｈ，以除去残留的炭，制得β型碳化硅粉末产品。其反应式如下：
SiO2＋3CSiC＋2CO 碳化硅纤维的起始原料是沸点为70 ℃的液体二甲基二氯硅烷。将其与金属钠作用。在比钠沸点高的惰性有机溶剂中，熔融状态的钠被分散，在其中滴下二甲基二氯硅烷，脱盐酸反应的同时生成聚硅烷。将聚硅烷在惰性气氛中加热到400 ℃以上时，发生热转移反应和聚合反应，生成中间产物聚碳硅烷。将其熔融纺丝成纤维。得到的聚碳硅烷纤维在煅烧工序进行高温处理，由于空气中的氧而发生架桥反应，通常在氮气氛中进行热处理，在温度为1200～1500℃制得强度高的碳化硅纤维。图XIV-9 气相反应合成装置 A-氢气入口；B-氢提纯装置；C-流量计；D-恒温浴；E-测温用棱镜；F-气体出口；G-石英玻璃管；H-基材；I-高周波感应线圈；J-基材架；K-石英玻璃管 2.在内部具备间壁的石墨坩埚里，放置原料碳化硅。用以石墨为发热体的Lely电炉(如图)，将坩埚加热至2200～2600℃，使原料SiC在坩埚低温部分升华，即制得高纯碳化硅。该法可制得较大型的α型碳化硅，缺点是容易包含细微炭粒。 3.利用上述以石墨作电阻的Lely电炉加热，在石墨坩埚中使碳溶解在熔融的硅里，利用温度差可使碳化硅单晶析出。与前法相比，可以较低的温度(约1500℃)析出结晶，这主要适合于β型碳化硅的合成。此法虽不包裹前法那样的炭粒，但是由于是在硅过量的情况下合成的，所以在结晶成长过程中，硅溶液容易渗进内部，此为该法缺点。 4.以四氯化硅、四氯化碳及氢气为原料，把混合气体送到感应加热的供结晶生长用基材上，使之反应。与此同时，使碳化硅结晶在基材上析出。根据反应气的浓度比，结晶生长温度，输送气体的流速，结晶生长用基材种类等条件的不同，其析出的结晶形状有所改变。当SiCl4/CCl4=1.4～1.8(摩尔比)，结晶生长温度1400～1500℃，氢气流速120cm/min以下的场合，得到须状结晶。超过这个范围则生成粒状结晶或在基材表面形成薄层(图)。

图气相反应合成装置

A—氢气入口；B—氢提纯装置；C—流量计；D—恒温浴；E—测温用棱镜；

F—气体出口；G—石英玻璃管；H—基材；I—高周波感应线圈；

J—基材架；K—石英玻璃管

该法的优点是可在较低温度下得到碳化硅结晶。采用活性碳纤维法。将活性碳纤维和二氧化硅在真空中于1300℃反应1～3h，其反应过程是使二氧化硅在活性碳纤维细孔内反应，使其生成碳化硅，将碳化硅在氮气中并于1600℃下进行加热处理，即得碳化硅纤维。 5. 采用硅石还原法。将高纯二氧化硅石和石油焦混合，做成10mm以下粒状，放入间接式电阻炉中，通电10～30h，在1800～1900℃反应，超过2000℃会使反应生成的ＳｉＣ分解。通电完成后即反应完全，放冷，将生成的碳化硅破碎、粉碎、水洗，得到粒状产品。

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碳化硅海关

[ 海关编码 ]: 2849200000

碳化硅文献

Effect of surface pretreatments on the bonding strength and durability of self-adhesive resin cements to machined titanium.

J. Prosthet. Dent. 109(2) , 113-20, (2013)

A durable and strong adhesive bond between luting agent and titanium framework is necessary. However, the nature of adhesion between titanium and the adhesive luting materials remains unclear.The purp...

Effect of surface treatment on bond strength of Ti-10Ta-10Nb to low-fusing porcelain.

J. Prosthet. Dent. 109(2) , 95-105, (2013)

Ti-10Ta-10Nb alloy is a promising alloy for metal ceramic crowns because of its good corrosion resistance and low cytotoxicity. However, more information is needed on the bond strength between this al...

Synthesis of thermal and chemical resistant oxygen barrier starch with reinforcement of nano silicon carbide.

Carbohydr. Polym. 97(2) , 758-63, (2013)

Starch/silicon carbide (starch/SiC) bionanocomposites were synthesized by solution method using different wt% of silicon carbide with starch matrix. The interaction between starch and silicon carbide ...

更多文献

碳化硅

碳化硅用途

碳化硅名称

碳化硅物理化学性质

碳化硅MSDS

详细MSDS(安全技术说明书)

碳化硅毒性和生态

CHEMICAL IDENTIFICATION

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

碳化硅安全信息

碳化硅制备

碳化硅海关

碳化硅文献

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