THE MECHANISM OF JOINT FORMATION IN SOLID-STATE WELDING OF ALUMINUM OXIDE CERAMICS WITH NIOBIUM (O Mekhanizme Obrazovaniya Soedineniya pri Svarke v Tverdom Sostoyanii Keramiki iz Okisi Alyuminiya s Niobiem),
Abstract
The kinetics of the process of joint formation in solid-state welding of Al2O3 ceramic to niobium was investigated. Calculations of the time of development of physical contact in welding Al2O3 and niobium, based on the conditions necessary to obtain a required creep rate, showed that total physical contact is formed with a temperature of 1500C, a pressure of 1.5 kg/sqmm and a time of 1000 sec. Thermodynamic calculations of the interaction of aluminum oxide with niobium pentoxide indicate the possible formation of a chemical bond at 1500C. The possibility of joining Al2O3 ceramic to niobium, using the calculated parameters, was proven by experiment. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 17, 1970
- Accession Number
- AD0701547
Entities
People
- A. S. Kotelkin
- E. S. Karakozov
- G. M. Matveev
- M. Kh. Shorshorov
- V. A. Merkulov
Organizations
- United States Naval Research Laboratory