Niobium Carbide NbC | Tantalum Carbide TaC

Description

Niobium Carbide NbC, light brown powder, with sodium chloride type cubic crystal system, melting point 3490°C, boiling point 4300°C, density 7.56g/cm³, is insoluble in water and in inorganic acid, but soluble in the mixed acid of hydrofluoric acid and nitric acid and can be decomposed. Niobium Carbide can not only be used as additive to inhibit the growth of the alloy grains to fine the cemented carbide crystalline grain in the production of cemented carbide, but also form the third dispersed phase with other carbides except WC and Co, which can significantly improve the thermal hardness, thermal shock resistance, hot pressing resistance and oxidation resistance of cemented carbide. With the advantages of improving the hardness and fracture toughness of the alloy, it can be used to prepare cemented carbide tool materials with excellent cutting performance. Besides, being higher melting point, high hardness and chemical stability, NbC is also used as high temperature refractory material and spray coating material in aerospace industry.

Delivery

Niobium Carbide NbC and Tantalum Carbide TaC at Western Minmetals (SC) Corporation can be delivered in size of powder 0.5-500 micron or 5-400 mesh or as customized specification, package of 25kg, 50kg in plastic bag with iron drum outside.

Inquiry now

Details

Tags

Technical Specification

Niobium Carbide

Tantalum Carbide

Niobium Carbide NbC and Tantalum Carbide TaC at Western Minmetals (SC) Corporation can be delivered in size of powder 0.5-500 micron or 5-400 mesh or as customized specification, package of 25kg, 50kg in plastic bag with iron drum outside.

No.	Item		Standard Specification
1	Products		Cr₃C₂	NbC	TaC	TiC	VC	ZrC	HfC
2	Content %	Total C ≥	12.8	11.1	6.2	19.1	17.7	11.2	6.15
2	Content %	Free C ≤	0.3	0.15	0.1	0.3	0.5	0.5	0.3
3	Chemical Impurity PCT Max each	O	0.7	0.3	0.15	0.5	0.5	0.5	0.5
		N	0.1	0.02	0.02	0.02	0.1	0.05	0.05
		Fe	0.08	0.05	0.05	0.05	0.05	0.05	0.05
		Si	0.04	0.01	0.01	0.02	0.01	0.005	0.005
		Ca	-	0.005	0.01	0.01	0.01	0.05	0.05
		K	0.005	0.005	0.005	0.005	0.005	0.005	0.005
		Na	0.005	0.005	0.005	0.01	0.01	0.005	0.005
		Nb	0.01	-	0.01	0.01	0.01	0.005	0.005
		Al	-	0.005	0.01	-	-	-	-
		S	0.03	-	-	-	-	-	-
4	Size		0.5-500micron or 5-400mesh or as customized
5	Packing		2kgs in composite bag with iron drum outside, 25kgs net

Tantalum Carbide TaC, brown color powder, cubic crystal structure of sodium chloride type, molecular weight 192.96, density 14.3g/cm³, melting point 3880°C, boiling point 5500°C, is insoluble in water and inorganic acids, and can dissolve in the mixture of hydrofluoric acid and nitric acid and decompose. Tantalum Carbide plays an important role in inhibiting grain growth and improving red hardness and wear resistance of the alloy, enhancing the oxidation resistance and corrosion resistance of the alloy and improving the structure of the alloy. With high chemical stability and high temperature character, TaC is an important additive to fine crystalline grain of WC for cutting tool with great hardness similar to the diamond. It can also offer great resistance to the temperature up to 3880°C, and finds wide applications in the fields such as hard alloys, targets, welding materials, cermets, electronics, machinery and aviation industry.