tantalum


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tantalum

 [tan´tah-lum]
a chemical element, atomic number 73, atomic weight 180.948, symbol Ta. (See Appendix 6.) It is a noncorrosive and malleable metal used for plates or disks to repair cranial defects, for wire sutures, and for making prosthetic appliances.

tan·ta·lum (Ta),

(tan'tă-lŭm),
A heavy metal of the vanadium group, atomic no. 73, atomic wt. 180.9479; used in surgical prostheses because of its noncorrosive properties.
[G. mythical king of Lydia, Tantalus]

tan·ta·lum

(tan'tă-lŭm)
A heavy metal of the vanadium group, atomic no. 73, atomic wt. 180.9479; used in surgical prostheses because of its noncorrosive properties.
[G. mythical king of Lydia, Tantalus]

tan·ta·lum

(Ta) (tan'tă-lŭm)
A heavy metal used in surgical prostheses because of its noncorrosive properties.
[G. mythical king of Lydia, Tantalus]
References in periodicals archive ?
The leakage current and break-down voltage of the dielectric is not deteriorated, thus leading to the introduction of a new line of high-voltage tantalum polymer capacitors with long-term reliability [10-12].
In all the composites, the grains are smaller in comparison to pure nanocrystalline tantalum. The smallest grains have the composites reinforced with [Y.sub.2][O.sub.3] and Zr[O.sub.2].
Based on the information from Figure 2 spectra one may note that oxygen (O 1s, O KLL), carbon (C 1s), phosphorus (P 2s, P 2p), calcium (Ca 2p, Ca 3p, Ca 3s), copper (Cu 2p), and tantalum (Ta 4f, Ta 4d, Ta 5s, Ta 5p) were found out.
The primary feature responsible for limiting the height and package efficiency of tantalum capacitors is their conventional package, but the problem with scaling down conventional tantalum capacitors into embedded tantalum capacitors is twofold: efficiency and manufacturability.
The specific type of tantalum powder used also plays a large role in the electrical performance and robustness of these components.
Designed for the toughest conditions: The new tantalum range has been specifically developed for use with hot, highly corrosive liquids.
The company says it had success pressuring its tantalum suppliers into a third party because Apple is the leading user of the metal worldwide.
During this period he has overseen the development of a Tantalum Mine in Mozambique and the acquisition and evaluation of the Mrima Hill Rare Earth and Niobium Project in Kenya.
Several classes of alloys were tested, including stainless steel (316L (UNS S31603)), nickel-based alloy (C276 (UNS N10276)), titanium alloys (Ti 6-4 (UNS R56400) and Ti 6-2-4-6 (UNS R56260)), and 316L surface-alloyed with tantalum (Ta).
I use tantalum capacitors as an example because, a few years ago, there was what many trade publications deemed "a shortage of tantalum capacitors" that was incorrectly attributed to a shortage of tantalum.
Congress originally mandated the rules in 2010, with the intention of reducing use of key minerals such as gold, tin, tungsten and tantalum as a source of financing for armies battling in the Democratic Republic of Congo and other neighboring countries.