Hafnium carbide (Hf C) is a chemical compound of hafnium and carbon. Previously the material was estimated to have a melting point of about 3,900 °C. [2] .

Tantalum hafnium carbide is a refractory chemical compound with a general formula Ta x Hf y C x+y, which can be considered as a solid solution of tantalum carbide and hafnium carbide. It was originally thought to have the highest melting of any known substance but new research has proven that hafnium carbonitride has a higher melting point.

2016年12月1日 · The results from this work show that HfC 0.98 has the highest melting point in the TaC-HfC system at (4232 ± 84) K, which make it the highest melting point compound, since the melting...

2024年9月1日 · Of the UHTCs, tantalum carbide (TaC) and hafnium carbide (HfC) feature the highest melting temperatures. We investigated the binderless consolidation of HfC/TaC powder blends using Field Assisted Sintering Technology (FAST). Powders consisting of 90/10, 50/50, and 10/90 vol% HfC:TaC were sintered to high densities (>94 %).

2004年1月8日 · Hafnium Carbide (HfC) is the most refractory binary compound known to man. Density, melting point and electrical resistivity data are provided.

Hafnium carbide (HfC) is a chemical compound that combines hafnium with carbon. It stands out for its extraordinarily high melting point, making it one of the most refractory binary compounds known. Previously, the material was thought to have a …

It was noted earlier [i] that in systems TaC-ZrC and TaC-HfC there are alloys with a melting point of about 4000~ which exceeds the melting point of the individual carbides. Later investigations [2, 3] demonstrated the presence of anomalies of the …

Among the various refractory metal carbides, hafnium carbide (HfC) got substantial significance due to its high melting point of 4163 K decreased thermal conductivity, no phase transformations, strong mechanical stability, and excellent resistance against dry and temperature-involved oxidation and electrochemical corrosion [29,30,31,32,33,34,35 ...

2024年4月2日 · The predicted HfC phases appear in the energy landscape with known structure types such as the WC type, NiAs type, 5-5 type, sphalerite (ZnS) type, TlI type, and CsCl type; in addition, we predict two new structure types denoted …

Hafnium carbide (Hf C) is a chemical compound of hafnium and carbon. Previously the material was estimated to have a melting point of about 3,900 °C.