INVESTIGATION OF BONDING IN OXIDE-FIBER (WHISKER) REINFORCED METALS.
Final rept. 1 Jul 64-31 Jul 65,
GENERAL ELECTRIC CO PHILADELPHIA PA MISSILE AND SPACE DIV
Pagination or Media Count:
The effect of specific active elements on the wetting and bonding of nickel to single crystal sapphire alpha-Al2O3 was investigated. Sessile drop experiments were conducted using specimens of pure nickel and nickel doped with small amounts of Cr, Ti, and Zr. Both the degree of wetting contact angle and the apparent shear strength between solidified metal drops and the sapphire were affected by the crystallographic orientation of the sapphire surface. It was demonstrated that a maximum shear strength of about 20,000 psi could be achieved for each of the doped specimens as a result of controlling the extent of the interfacial reactions. A theory was also advanced to describe the adherence between nickel and sapphire. Author
- Refractory Fibers
- Laminates and Composite Materials
- Fabrication Metallurgy