Fabrication and characterization of hot-pressed tantalum carbide

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  • English
Jet Propulsion Laboratory, California Institute of Technology , Pasadena
Tantalum car
Statement[by] M. H. Leipold [and] P. F. Becher.
SeriesJPL Technical report 32-1204
ContributionsBecher, Paul, joint author.
LC ClassificationsTN799.T3 L4
The Physical Object
Paginationiv, 9 p.
ID Numbers
Open LibraryOL5596838M
LC Control Number68002560

The fabrication process of a powder metallurgy (P/M) tantalum product with full density and fine microstructure was developed by using cold and hot isostatic pressing techniques.

Densification, microstructure and mechanical properties of hot pressed Tantalum Carbide Article (PDF Available) in Ceramics International 43(4) October with Reads How we measure 'reads'.

The TaC ceramic hot pressed at °C had the relative density of 94%, Vickers hardness of 14 GPa and fracture toughness of MPa m 1/2. Fabrication and characterization of hot-pressed tantalum carbide book et al.

[9] prepared pressureless sintered TaC powder (particle sizeCited by: 1. Introduction.

Description Fabrication and characterization of hot-pressed tantalum carbide EPUB

Tantalum carbide (TaC) is a candidate for high-temperature use, such as that required for high-performance cutting tools, rocket nozzles, and aerospace propulsion systems, due to its high melting point (> °C), high elastic modulus ( GPa, a corrected value from the theoretical density), high Vickers hardness (> GPa),,, and superior thermal and Cited by: hot pressed boron carbide overview.

Hot-pressed, also known as pressure assisted densified (PAD), boron carbide is one of the hardest materials available in commercial shapes.

This exceptional hardness combined with low density is used in ballistic armor, maximizing protection while minimizing weight. K. Behler, A. Hutchinson III and J. LaSalvia, The Effect of SiO2 and B2O3 Additives on the Microstructure and Hardness of Hot‐Pressed Boron Carbide, Advances in Ceramic Armor X, (), ().

Kevin Hemker, the Alonzo G. Decker Chair and professor of mechanical engineering, is known for work explaining the underlying, atomic-level details that govern the mechanical response, performance and reliability of disparate material holds joint appointments in the departments of Materials Science and Engineering, and Earth and Planetary Sciences.

@article{osti_, title = {Sandia solidification process: consolidation and characterization. Part I. Consolidation studies}, author = {Johnstone, J.K.}, abstractNote = {The consolidation behavior of a complex polycrystalline ceramic nuclear waste form composed of titanates, zeolite, and metallic silicon was studied.

Initial solidification takes place by an ion exchange process. hot pressed tungsten carbide overview. Hot pressed tungsten carbide has a fine-grained structure which enables its use in rigorous environments requiring an increased fracture toughness and hardness on top of the inherent high-strength of tungsten carbide.

Hot Pressed Grade Boron Carbide Powders are specially sized to aid in the hot pressing of boron carbide ceramic parts. They are typically fine powders with an average particle size of less than 10 microns and a specially tailored size distribution.

Contact Panadyne to discuss your hot pressed B 4 C application. Monolithic TaC sample hot pressed at °C for 45 min under 40 MPa, with relative density value above 97%, Vickers hardness of GPa and fracture toughness of MPa.m1/2 was obtained. Fracture surfaces investigations of the samples, which were carried out using the SEM analysis, showed a significant grain growth by increasing the hot.

Abstract. Tantalum forms with carbon several chemical compounds (see also section C–Ta in Table I): tantalum monocarbide TaC 1−x with the extremely broad homogeneity range, low-temperature (ordered) α-Ta 2+x C and high-temperature (disordered) β-Ta 2±x C modifications of tantalum semicarbide (the latter cannot be retained by quenching), close-packed (nanolamellar) ε-Ta.

Fabrication and characterization of powder metallurgy tantalum components prepared by high compaction pressure technique Journal Article Kim, Youngmoo ; Agency for Defense Development, Yuseong, P.O.

Yuseong-gu, DaejeonRepublic of Korea. After Diamond, Cubic Boron Nitride and Boron Oxide, Hot pressed Boron Carbide has the highest hardness known.

Its main applications make use of its excellent wear resistance and high strength. It has a low density but a high elastic modulus and high compressive strength, which leads to its use as a ballistic material. This chapter provides a comprehensive knowledge about the potential role of tungsten-based composites in fusion reactors and the research work which has been done in this very important area of nuclear materials.

The characteristics of tungsten, which make it the most potential candidate for plasma-facing applications, have been presented along with the shortcomings in pure by: 6.

A type of cutting material. A mix of CERamic and MEtal, consist of ceramic particles in a metallic structure. Also known as HOT-PRESSED CERAMICS.

Made of 70% Aluminum Oxide and 30% Titanium Carbide. ISSUE: They are brittle and NOT cost effective. Also little improvement is achieved if this material is coated. High Temperature Oxides, Magnesia, Alumina, Beryllia Ceramics: Fabrication, Characterization and Properties is the third part of a series of four books on high temperature oxides.

This text is divided into five chapters that deal with the research and technical advances in selected refractory oxides, such as magnesia, alumina, and beryllium oxide. Both hot pressed boron carbide and tungsten carbide are non-oxide engineering ceramics.

There are 19 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

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Please note that the two materials have significantly dissimilar densities. Hemker K, Xie KY, Kuwelkar K, Haber RA, LaSalvia JC (). Microstructural characterization of a commercial hot-pressed boron carbide armor plate.

Journal of the American Ceramic Society.

Details Fabrication and characterization of hot-pressed tantalum carbide PDF

Hemker K, Xie KY, An Q, Sato T, Breen AJ, Ringer SP, Goddard WA, Cairney JM (). Breaking the icosahedra in boron carbide. Xie KY, Kuwelkar K, Haber RA, LaSalvia JC, Hemker KJ. Microstructural characterization of a commercial hot-pressed boron carbide armor plate.

Journal of the American Ceramic Society Hot-pressed ¾Poor densification ¾Smaller grain size ¾All grains contain twins ¾Very high twin density ¾Non-uniform twin spacing Hot-pressed and HIP’d.

Abstract. Brief accounts are given of current understanding and recent work in stress assisted hot-formation of ceramics. Attention is focused in turn to: i) fundamental densification mechanisms in powder compacts under load (particle and grain rearrangements, plastic deformation and creep, diffusional atomic transport); ii) conventional pressure sintering (either uniaxial or isostatic hot Author: A.

Mocellin. ISBN: X OCLC Number: Notes: "Proceedings of the 4th International Symposium on Science and Technology of Sintering held in Tokyo, on November, "--Title page verso. Paliwal & K.T. Ramesh, “Effect of crack growth dynamics on the rate sensitive behavior of hot- pressed boron carbide,” Scripta materialia, Vol.

57, pp. –, File Size: KB. Focusing on diamond material, the book examines its synthesis and characterization as well as its electrical, optical, and conductive properties. The book also discussesthe use of silicon carbide, boron compounds, and other material used in electronic and light-emitting devices.

Purchase Advanced Materials '93 - 1st Edition. Print Book & E-Book. ISBNBook Edition: 1. carbide solid zrc1 metal transition hot formation phys continued phases metals transition metal powder interaction mol pressed tantalum also section see also section stoichiometric soc Post a Review You can write a book review and.

Anisodimensional tungsten carbide platelets having a maximum dimension of from to 50 microns and a minimum dimension of less than one-third the maximum dimension are prepared by heating an intimately mixed uniformly fine cobalt/tungsten carbide powder to a temperature above 1,* C.

and recrystallizing the tungsten carbide. The platelets are useful in preparing cobalt bonded tungsten Cited by: Journal of Inorganic Materials ››Vol. 28 ›› Issue (10): doi: /SP.J • Research Paper • Previous Articles Next Articles Effect of Particle Size on Densification and Mechanical Properties of Hot-pressed Boron Carbide.

[] Zhang, H., Chen, Z. Fabrication and characterization of electrospun PLGA/MWNTs/hydroxyapatite biocomposite scaffolds for bone tissue engineering. Bioact. Residual stress in spark-plasma-sintered and hot-pressed tantalum samples determined by X-ray diffraction methods.

Angerer, W. Artner, E. Neubauer, L. Yu, K. Khor: Int. Refract. Met. Hard Mater. 26(4) () Residual stress of ruthenium powder samples compacted by spark-plasma-sintering (SPS) determined by X-ray. This study deals with the fabrication of dense monophasic zirconium carbide by combining the SHS and SPS techniques.

Specifically, according to previous findings providing evidence of the improved sintering ability of combustion synthesized powders with respect to differently prepared products [24,25], the zirconium carbide phase is first obtained by by: 4.It is hard to represent our life without composite materials which for today take one of the main place in such application areas as aviation, transport, space, construction and building field, ecology, sport, biomedicine, electronics, energy sector, including renewable energetic, and etc.

Variation of the nature of components, using of nanocomponents and nanoadditives to the materials of.Hardness and toughness of hot pressed ZrB2-SiC composites consolidated under relatively low pressure JOURNAL OF ALLOYS AND COMPOUNDS set ZrB2-based composites, contain 20, 25, and 30 vol% SiC, have been prepared by hot pressing at temperatures ofand °C for 30 min under a relatively low pressure of 10 : Ingegnere dei materiali.