HW 6 - -what kind of vacancies would you expect to form How many of these vacancies are created for every O-2 added 5.19 For each of the following

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Homework # 6 5.5: (a) Atomic radius, crystal structure, electronegativity, and the most common valence are tabulated below, for several elements. Which of these elements would you expect to form a substitutional solid solution with nickel having complete solubility . Element Atomic Radius (nm) Crystal Structure Electronegativity Valence Ni 0.1246 FCC 1.8 +2 Ag 0.1445 FCC 1.9 +1 Al 0.1431 FCC 1.5 +3 Co 0.1253 HCP 1.8 +2 Cr 0.1249 BCC 1.6 +3 Fe 0.1241 BCC 1.8 +2 Pt 0.1387 FCC 2.2 +2 Zn 0.1332 HCP 1.6 +2 5.6: (a) Suppose that CaO is added as an impurity to Li 2 O. If the Ca +2 substitutes for Li + what kind of vacancies would you expect to form? How many of these vacancies are created for every Ca +2 added? (b) Suppose that CaO is added as an impurity to CaCl 2 . If the O -2 substitutes for Cl
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: -what kind of vacancies would you expect to form? How many of these vacancies are created for every O-2 added? 5.19: For each of the following stacking sequences found in FCC metals, cite the type of planar defect that exists: (a) ..ABCABCBACBA. (b) ..ABCABCBCABC. Now copy the stacking sequences and indicate the position(s) of planar defect(s) with a vertical dashed line. 5.22: Determine the ASTM grain size number if 25 grains per square inch are measured at a magnification of 75 X. Ungraded Question for Thought: Would slip occur more easily on the (111) plane or on the (326) plane in an FCC structure? Why or why not?...
View Full Document

This note was uploaded on 08/02/2011 for the course ENMA 300 taught by Professor Alsheikhly during the Spring '11 term at University of Maryland Baltimore.

Page1 / 2

HW 6 - -what kind of vacancies would you expect to form How many of these vacancies are created for every O-2 added 5.19 For each of the following

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online