Simple refractory metal oven design of high temperature uniformity suitable for operation in ultrahigh vacuum

1974 ◽  
Vol 45 (2) ◽  
pp. 306-307 ◽  
Author(s):  
R. L. Osgood ◽  
C. Procik ◽  
A. H. Madjid ◽  
W. F. Anderson
Keyword(s):  
High Temperature ◽  
Refractory Metal ◽  
Ultrahigh Vacuum ◽  
Temperature Uniformity

WIELAND DURO TANTALUM

Alloy Digest ◽  
2020 ◽  
Vol 69 (11) ◽  
Keyword(s):  
High Temperature ◽  
Powder Metallurgy ◽  
Physical Properties ◽  
Tensile Properties ◽  
Refractory Metal ◽  
Temperature Performance

Abstract Wieland Duro Tantalum is unalloyed tantalum that is produced from powder metallurgy consolidated ingots. It is a versatile refractory metal that is used in demanding applications requiring resistance to high temperature and corrosion. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on low and high temperature performance as well as machining and joining. Filing Code: Ta-14. Producer or source: Wieland Duro GmbH.

Processing high-temperature refractory-metal silicide in-situ composites

JOM ◽  
1999 ◽  
Vol 51 (4) ◽  
pp. 32-36 ◽  
Author(s):  
B. P. Bewlay ◽  
M. R. Jackson ◽  
P. R. Subramanian
Keyword(s):  
High Temperature ◽  
Refractory Metal ◽  
Metal Silicide ◽  
In Situ Composites

Fracture and Fatigue of Niobium Silicide Alloys

2008 ◽  
Vol 1128 ◽  
Author(s):  
David M. Herman ◽  
Bernard P Bewlay ◽  
Laurent Cretegny ◽  
Richard DiDomizio ◽  
John Lewandowski
Keyword(s):  
High Temperature ◽  
Mechanical Behavior ◽  
Refractory Metal ◽  
Fatigue Behavior ◽  
Metal Phase ◽  
Metal Silicide ◽  
Alloy Composite ◽  
Niobium Silicide ◽  
Composite Properties

AbstractThe fracture and fatigue behavior of refractory metal silicide alloys/composites is significantly affected by the mechanical behavior of the refractory metal phase. This paper reviews some of the balance of properties obtained in the alloys/composites based on the Nb-Si system. Since some of the alloy/composite properties are dominated by the behavior of the refractory metal phase, the paper begins with a review of data on monolithic Nb and its alloys. This is followed by presentation of results obtained on Nb-Si alloys/composites and a comparison to behavior of some other high temperature systems.

scholarly journals Coating Reactions on Vanadium and V-Si-B Alloys during Powder Pack-Cementation

Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4099
Author(s):  
Georg Hasemann ◽  
Chad Harris ◽  
Manja Krüger ◽  
John H. Perepezko
Keyword(s):  
High Temperature ◽  
Oxidation Resistance ◽  
Refractory Metal ◽  
Pack Cementation ◽  
Solid Solution Phase ◽  
Major Drawback ◽  
Three Phase ◽  
Structural Applications ◽  
New Type ◽  
Refractory Metal Alloys

Alloys in the V-Si-B system are a new and promising class of light-weight refractory metal materials for high temperature applications. Presently, the main attention is focused on three-phase alloy compositions that consist of a vanadium solid solution phase and the two intermetallic phases V3Si and V5SiB2. Similar to other refractory metal alloys, a major drawback is the poor oxidation resistance. In this study, initial pack-cementation experiments were performed on commercially available pure vanadium and a three-phase alloy V-9Si-5B to achieve an oxidation protection for this new type of high temperature material. This advance in oxidation resistance now enables the attractive mechanical properties of V-Si-B alloys to be used for high temperature structural applications.

Diamond Nucleation Studies on Refractory Metals and Nickel

1994 ◽  
Vol 339 ◽  
Author(s):  
S. D. Wolter ◽  
B. R. Stoner ◽  
P. C. Yang ◽  
W. Lui ◽  
J. T. Glass
Keyword(s):  
High Temperature ◽  
Initial Data ◽  
Refractory Metal ◽  
Hydrogen Absorption ◽  
Substrate Material ◽  
Diamond Growth ◽  
Relative Importance ◽  
Lattice Match ◽  
Diamond Nucleation ◽  
Temperature Pretreatment

ABSTRACTDiamond nucleation has been investigated on a variety of potential heteroepitaxial substrate materials. Previous work in this laboratory has demonstrated heteroepitaxial nucleation on both Si and SiC substrates via bias-enhanced nucleation (BEN). In this study the effects of BEN of diamond on refractory metal substrates is investigated in detail. Initial data suggest a strong correlation between the carbide forming nature of the substrate material and the rate of nucleation during biasing. Our second avenue of research involves low pressure diamond growth on nickel. This material is a promising material due to its close lattice match and recent evidence of epitaxy reported by other researchers. To form heteroepitaxial diamond on nickel a high temperature pretreatment routine has been established and is the basis for this area of research. The relative importance of hydrogen absorption during this routine is explored and correlated to the formation and degree of diamond epitaxy.

High Temperature Reliability of Refractory Metal Ohmic Contacts to Diamond

1992 ◽  
Vol 139 (7) ◽  
pp. 2001-2004 ◽  
Author(s):  
M. Roser ◽  
C. A. Hewett ◽  
K. L. Moazed ◽  
J. R. Zeidler
Keyword(s):  
High Temperature ◽  
Refractory Metal ◽  
Ohmic Contacts
Sign in / Sign up

Export Citation Format

Share Document