Niobium carbide

• CAS: 12069-94-2
• Catalog Number: ACM12069942
• Category: Main Products
• Molecular Weight: 105.93
• Molecular Formula: CHNb
• Synonyms: Niobium monocarbide
• Appearance: Black to purple gray powder

Case Study

Niobium Carbide (NbC) and Cobalt-Bonded NbC for Wear-Resistant Tribosystems

Woydt M, et al. International Journal of Refractory Metals and Hard Materials, 2015, 49, 212-218.

This work investigates the tribological properties of binderless and metal-bonded niobium carbide (NbC) to verify its potential for use as cutting tools. The results show that the wear resistance of binderless HP-NbC and NbC-8Co (SPS) is easily comparable to that of ceramics and cemented carbides, which means that NbC is an effective friction material with enhanced wear resistance.
Preparation procedures of Cobalt-Bonded NbC
· The NbC-8Co material was produced using commercially available NbC powder with a FSSS of 1.18 μm and cobalt powder (Umicore grade) with an 8% volume cobalt content. The NbC powder had a granulometry of d50 = 1.72 μm and d90 = 3.78 μm.
· The NbC and cobalt powders were mixed in ethanol on a multidirectional mixer with WC-Co milling balls for 24 hours. The resulting wet mixture was dried first in a rotating evaporator at 65 °C and then in an oven at 80 °C for 24 hours.
· After drying, the powder was sieved through a 305 mesh to ensure uniform particle size distribution. The powder mixture was then densified by solid state sintering by KUL, using a pulsed electric current with a 10/5 ms pulse/pause duration.
· The mixture was poured into a cylindrical graphite die with an outer diameter of 40/56 mm and sintered at 1280 °C for 4 minutes under a pressure of 30 MPa and a heating rate of 100 °C/min. Graphite paper inserts were used to separate the graphite die/punch set-up from the powder mixture.

Preparation of Nbc-Cu Composites Based on Niobium Carbide

Prysyazhnyuk P, et al. Eastern-European Journal of Enterprise Technologies, 2018, 1729-3774.

Niobium carbide-copper (NbC-Cu) composites were successfully prepared by impregnation of preformed carbide skeletons. It is a wear-resistant composite material that can be used as a friction-reducing coating.
Preparation procedure of NbC-Cu composites
· The materials utilized for this study included NbC powder with a composition meeting the formula NbC0.98 (Nb≥88.5%, C≥11.1%), copper of grade M0b according to GOST 859-2001, and an average particle size of approximately 1 µm.
· To create a porous skeleton, the carbide powder was mixed with a 5% rubber solution in gasoline for plasticization. The dried and granulated powder was then pressed in a steel mold at around 500 MPa to form workpieces measuring 55×30×10 mm with an open porosity of about 40%.
· The impregnation process was carried out using a "top-down" approach. Workpieces were covered with copper briquettes to fill all pores, then placed in crucibles made of aluminum oxide with zirconium dioxide backfill.
· These crucibles were heated in the vacuum furnace SShV-1.25/25-I1 according to the specified stages, including slow heating to 1,000 °C for plasticizer removal, rapid heating to 1,400 °C, and isothermal aging at 1,400 °C for filling the carbide skeleton capillaries with molten copper.

Custom Q&A

What is the molecular formula of niobium carbide?

The molecular formula of niobium carbide is CHNb.

What are some synonyms for niobium carbide?

Some synonyms for niobium carbide include Nb2C MXene Film, Nb2C Quantum Dots, and NIOBIUMCARBIDE.

What is the molecular weight of niobium carbide?

The molecular weight of niobium carbide is 105.925 g/mol.

When was niobium carbide created?

Niobium carbide was created on September 13, 2005.

What is the IUPAC Name of niobium carbide?

The IUPAC Name of niobium carbide is methylidyneniobium.

What is the InChI of niobium carbide?

The InChI of niobium carbide is InChI=1S/CH.Nb/h1H.

What is the InChIKey of niobium carbide?

The InChIKey of niobium carbide is UNASZPQZIFZUSI-UHFFFAOYSA-N.

What is the Canonical SMILES of niobium carbide?

The Canonical SMILES of niobium carbide is C#[Nb].

What is the CAS number of niobium carbide?

The CAS number of niobium carbide is 12069-94-2.

How would you describe the physical properties of niobium carbide?

Niobium carbide is a lavender-gray solid. It is insoluble in water and is a grey odorless powder.