Compressor Impeller Erosion Resistant Surface Treatment

reportActive / Technical Report | Accession Number: ADA382867 | Open PDF

Abstract:

Electro-spark alloyed ESA surfaces were developed as an erosion barrier for Ti-6-4 impellers on shaft driven compressors SDCs. Coatings based on tungsten carbide tantalum carbide. titanium carbide all with a cobalt matrix were evaluated for high velocity particle erosion in conventional wear test studies as well as wind tunnel testing. In both cases the coating survived erosion by alumina and silica sand ranging in size from 50 to 200 microns. The ESA process formed these coatings with a full metallurgical bond, a nano-grained texture, and no heat affected zone in the base titanium alloy. The coatings demonstrated life extensions ranging from 3 to over 20 times, based upon test conditions. The ESA process was also demonstrated on actual impeller hardware for manufacturing feasibility considerations. This was a Phase I SBIR through NAVAIR Pax River MD.

Author(s):
Riley, Michael A.
Author Organization(s):
SURFACE TREATMENT TECHNOLOGIES INC GLENBURNIE MD
Descriptive Note:
Phase 1 Final rept. 4 Mar-10 Feb 2000
Supplementary Note:
Topic number N00-002.
Pagination:
0033

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Contract/Grant Number(s):
N68335-00-C-0336
Monitor Series:
NAWCADLKE
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.5.2_Task; JCA_5.5_Direct; JCA_1.2_Force Preparation; JCA_1_Force Support; JCA_1.2.3_Educating; JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means; JCA_5.3_Planning; JCA_6.4.1_Secure Information Exchange; JCA_6_Net Centric; JCA_8_Building Partnerships; JCA_6.4_Information Assurance; JCA_8.2_Shape
Modernization Areas:
Microelectronics; Autonomy
Communities of Interest:
Weapons Technologies
Descriptor(s):
*SURFACE PROPERTIES, *COMPRESSORS, *EROSION RESISTANCE, *IMPELLERS, METAL COATINGS, PARTICLES, FEASIBILITY STUDIES, ALUMINUM OXIDES, WIND TUNNEL TESTS, SILICON COMPOUNDS, TITANIUM ALLOYS, VERTICAL TAKEOFF AIRCRAFT, WEAR RESISTANCE, COBALT, METALLURGY, TANTALUM CARBIDES, TUNGSTEN CARBIDES, SPARK MACHINING, NANOTECHNOLOGY
Field(s)/Group(s):
Metallurgy and Metallography
Keyword(s):
SBIR(SMALL BUSINESS INNOVATION RESEARCH), ESA(ELECTROSPARK ALLOYING), NANOMATERIALS, V 22 OSPREY, V 22 AIRCRAFT, SDC(SHAFT DRIVEN COMPRESSORS)
Report Date:
2000 Oct 09
Creation Date:
2000 Oct 25