Microstructure study of CVD W coating on Mo single crystal rods with 〈1 1 1〉 axial orientation by EBSD

✍ Scribed by S.K. Chen; J.H. Du; G.R. Gao; Z.X. Li

• Book ID: 103841849
• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 386 KB
• Volume: 434
• Category: Article
• ISSN: 0921-5093
• DOI: 10.1016/j.msea.2006.07.010

✦ Synopsis

The morphology and grain orientation of the surface and the cross section of CVD W coating on a single crystal Mo rod with an axial direction of 1 1 1 have been characterized by SEM and EBSD. An obvious preferred orientation growth has been found in the W coating. About 80% surface area of the W coating is covered by W grains with a normal direction within 10 • around 1 0 1 . A strong {1 0 1} 1 1 1 texture has also been observed in the W coating. EBSD studies suggest that a combination of the Mo matrix introducing growth mechanism and the competing growth mechanism should be responsible for the preferred growth and texture formation.