Alumina coated Ti-25Al-10Nb-3V-1Mo for improved oxidation resistance

Journal Article · Sat Oct 01 04:00:00 EDT 1994 · Journal of Advanced Materials; (United States)

OSTI ID:6770196

Vaidya, R U; Zurek, A K; Castro, R ^[1]; Wolfenden, A; Hosman, S L ^[2]; Subramanian, K N ^[3]

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1. Los Alamos National Lab., NM (United States)
2. Texas A M Univ., College Station, TX (United States)
3. Michigan State Univ., East lansing, MI (United States)

The potential use of plasma sprayed Al[sub 2]O[sub 3] as an oxidation barrier for Ti-25Al-10Nb-3V-1Mo at high temperatures was investigated. The effectiveness of the coating was tested under conditions of cyclic oxidation. One cycle of the oxidation process involved exposing the sample at 1,000[degree]C for one hour followed by cooling to room temperature. Al[sub 2]O[sub 3] was found to be very effective in preventing oxidation of the Ti-25Al-10Nb-3V-1Mo substrate. No significant elemental diffusion occurred between the coating and the substrate during cyclic oxidation. Cracks were observed to form in the Al[sub 2]O[sub 3] layer in the vicinity of the interface, on completion of the thermal cycling experiments. Young's modulus and damping measurements were performed on the as-coated samples and samples cycled from 1,000[degree]C. 20 refs., 9 figs., 4 tabs.

• OSTI ID: 6770196
• Journal Information: Journal of Advanced Materials; (United States), Journal Name: Journal of Advanced Materials; (United States) Vol. 26:1; ISSN 1070-9789; ISSN JADMEK
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
360104 -- Metals & Alloys-- Physical Properties
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
COMPILED DATA
DATA
DEPOSITION
ENGINES
GAS TURBINE ENGINES
HEAT ENGINES
INDUSTRIAL RADIOGRAPHY
INFORMATION
INTERNAL COMBUSTION ENGINES
MOLYBDENUM ALLOYS
NIOBIUM ALLOYS
NUMERICAL DATA
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PLASMA
STRESSES
SURFACE COATING
THERMAL STRESSES
TITANIUM ALLOYS
TITANIUM BASE ALLOYS
TURBINE BLADES
X-RAY RADIOGRAPHY