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Metastable Phase Decomposition Quiz
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Metastable Phase Decomposition Quiz

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@SimplestHarpy

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Questions and Answers

What is the lattice expansion percentage observed when Nd2Fe14B absorbs hydrogen?

~6.8%

What is the consequence of hydrogen absorption by the primary main Nd2Fe14B phase?

Formation of NdH2, Fe2B, and Fe

What happens to the crystal structure and phase when Nd-rich phases absorb hydrogen at the grain boundaries?

Significant expansion and embrittlement

What is the lattice parameter of FCC NdH2?

<p>0.5470 nm</p> Signup and view all the answers

What type of magnets are formed with heavy rare-earth (HREs) additions such as Dy and Tb?

<p>Nd,Dy-Fe-B magnet</p> Signup and view all the answers

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