Accession Number : ADA192921

Title :   A Fundamental Understanding of the Interfacial Compatibility in Hybrid Material Systems.

Descriptive Note : Annual technical rept. 1 Sep 86-31 Oct 87,

Corporate Author : COLUMBIA UNIV NEW YORK CENTER FOR STRATEGIC MATERIALS

Personal Author(s) : Tien, John K

PDF Url : ADA192921

Report Date : 07 Mar 1988

Pagination or Media Count : 20

Abstract : Among the problems associated with long-term high temperature service of hybrid material systems is interdiffusional compatibility of the system's component materials. Efforts in this program have focussed on several area of this problem. One of the areas being examined are alkali metal and alkali earth metal diffusion barriers. These barriers are being applied by two different methods: ion implantation and a sol suspension slurry technique. For both methods, the system being utilized as a model is the tungsten/nickel system. Preliminary results of barrier effectiveness are given. Also being studied are the interdiffusional kinetics of metal/intermetallic and intermetallic/intermetallic ternary systems. Hybrids being examined include W/Ni3AL and TiAl/Ni3AL. Keywords: Nickel aluminides, Titanium aluminide.

Descriptors :   *ALKALI METALS, *COMPATIBILITY, *TITANIUM ALUMINIDE, *TITANIUM ALLOYS, *ALKALINE EARTH METALS, *TUNGSTEN ALLOYS, ALUMINIDES, HYBRID SYSTEMS, INTERFACES, ION IMPLANTATION, NICKEL, SUSPENSION DEVICES, TUNGSTEN, THERMAL CYCLING TESTS, ION IMPLANTATION, SUPERALLOYS, JET ENGINES, COMPOSITE MATERIALS

Subject Categories : Inorganic Chemistry
      Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE