0 30 5060 70 3600 UALA Weight percent tungsten 90 80 100 3422°C 3400 - 3200 3000 2800 2665 C 2670 C 2600 C 2580 C 54 57 2600 68 73 99.8 66 2400 - 2365°C 2337 C 37 48 2200 - 2170°C 2110'C (W) 2092°C 2020°C 51 2000 1970 C 18 29.5 17 (BB) 1800 10 20 30 40 50 60 70 80 90 100 в Atomic percent tungsten Answer the following questions with reference to the Boron-Tungsten binary phase diagram shown above. 1. What is the melting point of pure boron? 2. What is the melting point of pure tungsten? 3. At what composition and temperature does the lowest-temperature eutectic in this system осcur? 4. At what composition and temperature does the highest-temperature eutectic in this system occur? 5. List all of the known intermetallic compounds in this system. Temperature (°C) B,W, BBW BW,

0 30 5060 70 3600 UALA Weight percent tungsten 90 80 100 3422°C 3400 - 3200 3000 2800 2665 C 2670 C 2600 C 2580 C 54 57 2600 68 73 99.8 66 2400 - 2365°C 2337 C 37 48 2200 - 2170°C 2110'C (W) 2092°C 2020°C 51 2000 1970 C 18 29.5 17 (BB) 1800 10 20 30 40 50 60 70 80 90 100 в Atomic percent tungsten Answer the following questions with reference to the Boron-Tungsten binary phase diagram shown above. 1. What is the melting point of pure boron? 2. What is the melting point of pure tungsten? 3. At what composition and temperature does the lowest-temperature eutectic in this system осcur? 4. At what composition and temperature does the highest-temperature eutectic in this system occur? 5. List all of the known intermetallic compounds in this system. Temperature (°C) B,W, BBW BW,

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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