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Chemistry

10th Edition
Steven S. Zumdahl + 2 others
ISBN: 9781305957404

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BuyFindarrow_forward

Chemistry

10th Edition
Steven S. Zumdahl + 2 others
ISBN: 9781305957404
Textbook Problem

Superalloys have been made of nickel and aluminum. The alloy owes its strength to the formation of an ordered phase, called the gamma-prime phase, in which At atoms are at the corners of a cubic unit cell and Ni atoms are at the face centers. What is the composition (relative numbers of atoms) for this phase of the nickel- aluminum superalloy?

Interpretation Introduction

Interpretation:

The composition of the Aluminium – Nickel super alloy in its gamma – prime phase has to be determined.

Concept introduction:

Super alloy is also known as High Performance Alloy. Super alloys exhibit excellent properties than normal alloys. They have different and unusual structural features, more perfect than the usual crystalline solids. Due to this, they exhibit excellence in their properties. They have high tensile strength, high resistance to deformation when compared to normal alloys.

Super alloys have various phases in their lattice structure. One of them is known as gamma prime phase (γ') . This phase contains the aggregates that provide stability to the alloy. The metal atoms in the super alloy usually occupy cube faces and cube edges in this (γ') phase. Each atom at the edge is shared by eight unit cells. Each atom at the face of a unit cell is shared by two unit cells.

Explanation

Explanation

A cubic unit cell has 8 corners, 6 faces and 12 edges.   An atom occupying a corner of cubic unit cell is shared by eight unit cells. An atom occupying the face is shared by two unit cells.

It is clearly given that Aluminium occupies corners of the cubic unit cell in its super alloy and Nickel occupied faces of the unit cell. Thus, each Al atom is shared by eight unit cells and each Ni atom is shared by two unit cells

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Ch-10 P-1ALQCh-10 P-2ALQCh-10 P-3ALQCh-10 P-4ALQCh-10 P-5ALQCh-10 P-6ALQCh-10 P-7ALQCh-10 P-8ALQCh-10 P-9ALQCh-10 P-10ALQCh-10 P-11ALQCh-10 P-12ALQCh-10 P-13ALQCh-10 P-15QCh-10 P-16QCh-10 P-17QCh-10 P-18QCh-10 P-19QCh-10 P-20QCh-10 P-21QCh-10 P-22QCh-10 P-23QCh-10 P-24QCh-10 P-25QCh-10 P-26QCh-10 P-27QCh-10 P-29QCh-10 P-30QCh-10 P-31QCh-10 P-32QCh-10 P-34QCh-10 P-35QCh-10 P-36QCh-10 P-37ECh-10 P-38ECh-10 P-39ECh-10 P-40ECh-10 P-41ECh-10 P-42ECh-10 P-43ECh-10 P-44ECh-10 P-45ECh-10 P-46ECh-10 P-47ECh-10 P-48ECh-10 P-49ECh-10 P-50ECh-10 P-51ECh-10 P-52ECh-10 P-53ECh-10 P-54ECh-10 P-55ECh-10 P-56ECh-10 P-57ECh-10 P-58ECh-10 P-59ECh-10 P-60ECh-10 P-61ECh-10 P-62ECh-10 P-63ECh-10 P-64ECh-10 P-65ECh-10 P-66ECh-10 P-67ECh-10 P-68ECh-10 P-69ECh-10 P-70ECh-10 P-71ECh-10 P-72ECh-10 P-73ECh-10 P-74ECh-10 P-75ECh-10 P-76ECh-10 P-77ECh-10 P-78ECh-10 P-79ECh-10 P-80ECh-10 P-81ECh-10 P-82ECh-10 P-83ECh-10 P-84ECh-10 P-85ECh-10 P-86ECh-10 P-87ECh-10 P-88ECh-10 P-89ECh-10 P-90ECh-10 P-91ECh-10 P-92ECh-10 P-93ECh-10 P-94ECh-10 P-95ECh-10 P-96ECh-10 P-97ECh-10 P-98ECh-10 P-99ECh-10 P-100ECh-10 P-101ECh-10 P-103ECh-10 P-104ECh-10 P-105ECh-10 P-106ECh-10 P-107ECh-10 P-108ECh-10 P-109ECh-10 P-110ECh-10 P-111AECh-10 P-112AECh-10 P-113AECh-10 P-114AECh-10 P-115AECh-10 P-116AECh-10 P-117AECh-10 P-118AECh-10 P-119AECh-10 P-120AECh-10 P-121AECh-10 P-122AECh-10 P-123AECh-10 P-124AECh-10 P-125AECh-10 P-126AECh-10 P-127AECh-10 P-128AECh-10 P-129AECh-10 P-131CWPCh-10 P-132CWPCh-10 P-133CWPCh-10 P-134CWPCh-10 P-135CWPCh-10 P-136CWPCh-10 P-137CWPCh-10 P-138CWPCh-10 P-139CWPCh-10 P-140CWPCh-10 P-141CPCh-10 P-142CPCh-10 P-143CPCh-10 P-144CPCh-10 P-145CPCh-10 P-146CPCh-10 P-147CPCh-10 P-148CPCh-10 P-149CPCh-10 P-150CPCh-10 P-151CPCh-10 P-152CPCh-10 P-153CPCh-10 P-154CPCh-10 P-155CPCh-10 P-156CPCh-10 P-157IPCh-10 P-158IPCh-10 P-159IPCh-10 P-160MP

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