Preparation of Nb-Cr Alloy Powder by Hydrogenation

DOI Web Site Web Site 1 Citations 15 References

Bibliographic Information

Other Title
  • 水素処理によるNb-Cr合金粉末の作製
  • スイソ ショリ ニヨル Nb Cr ゴウキン フンマツ ノ サクセイ

Search this article

Abstract

The pulverization by hydrogenation is a new method for fabricating intermetallic powders with high quality and low cost. In this study, the pulverization by hydrogenation was studied for various Nb-Cr alloys. The hydrogenation was performed under the hydrogen atmosphere of 0.1 MPa in an arc-melting chamber without exposure to air after arc-melting. Constituent phases and lattice constants before and after hydrogenation were examined by X-ray diffraction analysis. It is found that the pulverization by hydrogenation occurs only in two phase alloys consisting of Nb solid solution (Nbss) and NbCr2. In the Nbss/NbCr2 alloys, the lattice constant of Nbss increases remarkably through hydrogenation, while that of NbCr2 does not change. It is concluded that the pulverization of the Nbss/NbCr2 two phase alloy is caused by large strain accompanied with lattice expansion of Nbss through hydrogenation and crack nucleation at intrinsically brittle NbCr2.

Journal

Citations (1)*help

See more

References(15)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top