Effect of Carbide Powder Type and Refractory Compound Additions on Properties of Sintered WC-10 Co Hard Metals

1991 ◽  
Vol 8-9 ◽  
pp. 409-414
Author(s):  
D. Basu ◽  
S.K. Bhaumik ◽  
Gopal S. Upadhyaya
Keyword(s):  
Refractory Compound ◽  
Carbide Powder ◽  
Hard Metals ◽  
Powder Type

ZIRCAR ZIRCONIA POWDER TYPE ZYP-4.5

Alloy Digest ◽  
1989 ◽  
Vol 38 (3) ◽  
Keyword(s):  
Fracture Toughness ◽  
Physical Properties ◽  
Yttrium Oxide ◽  
Zirconium Oxide ◽  
Raw Material ◽  
Bend Strength ◽  
Powder Metal ◽  
Zirconia Powder ◽  
Tetragonal Crystal ◽  
Powder Type

Abstract ZIRCAR ZIRCONIA POWDER TYPEZYP-4.5 is a highly reactive form of zirconium oxide stabilized in the tetragonal crystal state with added yttrium oxide. It is an excellent raw material for producing dense structural and wear resistant parts. This datasheet provides information on composition, physical properties, microstructure, hardness, elasticity, and bend strength as well as fracture toughness. It also includes information on powder metal forms. Filing Code: Cer-1. Producer or source: Zircar Products Inc..

Nanozirconium Carbide Powder Synthesis via Carbothermal Route

2013 ◽  
Vol 334-335 ◽  
pp. 381-386 ◽  
Author(s):  
F. Arianpour ◽  
F. Kazemi ◽  
Hamid Reza Rezaie ◽  
A. Asjodi ◽  
J. Liu
Keyword(s):  
Carbon Sources ◽  
Zirconium Carbide ◽  
Carbide Powder ◽  
Carbide Formation ◽  
Matrix Composites ◽  
Powder Synthesis ◽  
High Refractoriness ◽  
Heat Treated ◽  
Crystallite Sizes ◽  
20 Nm

Zirconium carbide (ZrC) has extended application in many ceramic and metal matrix composites especially used for ultra high temperature conditions. The synthesis of zirconium carbide powder is costly and difficult because of its high refractoriness and chemically inert properties. In this research, the synthesis of zirconium carbide nanopowder at low temperature via carbothermal reduction route was investigated according to thermodynamic data. The starting materials were zirconium acetate and sucrose as zirconium and carbon sources, respectively. After preparation of different carbon/zirconium ratio containing precursors, the dried precursors were heat treated at 1400°C and vacuum atmosphere. Also the ZrC formation was followed by thermal analysis of the produced precursors. The phase evolutions and microstructural studies were carried out using X-ray diffraction and scanning electron microscopy. The results showed that it is possible to synthesis zirconium carbide nanopowder with round shape and crystallite sizes smaller than 20 nm at low temperatures. Also according to thermodynamic calculations, it was concluded that by applying vacuum condition, the zirconium carbide formation can occur at less than 1000°C which is very effective on the size reducing of produced ZrC nanopowders.

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