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semimetals

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060315
EISBN: 978-1-62708-261-7
...-resistance alloys, superalloys, refractory metals, low-melting-point metals, reactive metals, precious metals, rare earth metals, and metalloids or semimetals. It also provides a brief summary on special-purpose materials, including uranium, vanadium, magnetic alloys, and thermocouple materials. light...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240003
EISBN: 978-1-62708-251-8
... elemental substances. Those elements that do not display the characteristics of the metallic elements are called nonmetals. However, there are some elements that behave as metals under some circumstances and as nonmetals under different circumstances. These are now called semimetals but have also been...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240303
EISBN: 978-1-62708-251-8
... of resistivities, from the low resistivity (high conductivity) of silver and copper to the high resistivity (low conductivity) of manganese and bismuth. Resistivity values of metals increase with increasing temperature. The semimetals boron, carbon, silicon, white phosphorus, sulfur, germanium, and tellurium have...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.tm.t52320091
EISBN: 978-1-62708-357-7
... are semimetals; therefore the melting points of fcc Si and fcc Sn are estimated to be extraordinarily low. Source: Ref 3 4.3.2 Solubility Curve of Compound [Exercise 4.8] Obtain an approximation that expresses a solubility of a compound AmBn (θ phase) to α phase and β phase in A-B system...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1983
DOI: 10.31399/asm.tb.mlt.t62860163
EISBN: 978-1-62708-348-5
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.tm.t52320013
EISBN: 978-1-62708-357-7
... / T b ≈ 92 Metals fit well the Richards rule, as shown in Fig. 2.5(a) . However, the value of Δ S m of a semiconductor or a semimetal (Si or Bi) or a compound (NaCl, etc.) is considerably larger than R . Because “entropy” is the parameter of order, the entropy change of melting...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.tm.t52320055
EISBN: 978-1-62708-357-7
... phase of Al-X and Fe-X systems estimated by A.R. Miedema and his group. In the case of transition metals in the center of the periodic table, Ω L < 0 because they are easy to merge in both Fe and Al. However, in case of alkaline metals (Na, K, and so on) in the left end of the table and semimetals...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.tm.t52320123
EISBN: 978-1-62708-357-7
..., α ≈ 0.5 and a rough interface is stable. However, in the case of covalent crystals or semimetal crystals such as Si, Ge, and Bi, as shown in Fig. 2.5(a) , Δ H m ≈ RT m ≈ 2.5 and z = 4, then a smooth interface is stable. Moreover, usually α > 5 also in case of organic crystals...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420363
EISBN: 978-1-62708-310-2
... different circumstances. These are now called semimetals, but have also been called metalloids, meaning like metals. The boundaries separating the regions in the periodic table covered by the different classes of elements are not distinct, except that nonmetals never form positive ions. A simplified...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1983
DOI: 10.31399/asm.tb.mlt.t62860203
EISBN: 978-1-62708-348-5
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2004
DOI: 10.31399/asm.tb.ps.t62440189
EISBN: 978-1-62708-352-2
... hand, resistivities and CTEs are all closely similar for the different solders, with the exception of Bi-43Sn. Bismuth is a semimetal, rather than a normal metal, that is present in near-equal proportion by volume as the tin phases in the microstructure of the Bi-43Sn solder, which accounts for its...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1983
DOI: 10.31399/asm.tb.mlt.9781627083485
EISBN: 978-1-62708-348-5