Modern technology to extend the life of air centrifugal compressor rotors - ROTORS

Funding agency: RELANSIN, Project 1666/2003

Coordinator - I.N.C.D.T COMOTI  - Bucuresti , Project leader: Eng. Puscasu

Partner - INOE 2000 –Magurele, Partner project manager: Dr. Viorel Braic

Partner “Politehnica” University – CEMS, Partner project manager: Prof. Dr. Eng. Simona Zamfir

Partner and beneficiary - S.C. PETROM SERVICE S.A. – Bucuresti, Partner project manager: Eng.  Adam Liviu

 

                Objective

Novel design of the air centrifugal compressor rotors  

Novel coating applied to air centrifugal compressor rotors  aiming to extending their useful life

 

Specific objectives for INOE 2000:

v  Novel coating applied to air centrifugal compressor rotors  (5 typo-dimensions) aiming to extend their time-life

Results:

  1. 3 types of multilayers: 

-          M3: TiC /  TiC0.5N0.5 / TiN;

-          M5: TiC / TiC0.7N0.3 / TiC0.5N0.5 / TiC0.3N0.7 / TiN;

-          M9: TiC / TiC0.7N0.3 / TiC0.5N0.5 / TiC0.3N0.7 / TiC0.5N0.5 / TiC0.7N0.3 / TiC0.5N0.5 / TiC0.3N0.7 / TiN   

 

 

 

 

 

 

SEM image of M3                                                            SEM image of M9

 

 

Uncoated rotor size S1 

 

                

Uncoated rotor size S5                        M9 coated rotor size 4 inside the deposition chamber

 

 

 

 

 

 

 

Coating thickness (µm)

Microhardness (HV0,03)

Adhesion (N)

Rotor S1

4.5

2770

39

Rotor  S2

4.6

2750

38

Rotor  S3

4.6

2750

39

Rotor  S4

4.6

2760

37

Rotor  S5

4.5

2770

38

 

 

  1. Deposition processes: cathodic arc

 

 

 

 

 

 

 

 

 

 

        

          Different rotors inside the deposition chamber of the cathodic arc deposition equipment

 

  1. Published papers

-          “Microchemical and microstructural properties of metallic nitride and carbide hard coatings deposited by arc-evaporation, M. Braic, V. Braic, M. Balaceanu, G. Pavelescu, A. Vladescu, Rom.Rep.Phys, vol.55.no.3, pag. 451-461, 2004

-          “Mechanical and wear resistance characterisation of titanium based hard coatings deposited by the arc method, A.A.Popescu, I Tudor, V. Braic, M.Braic, M.Balaceanu, A. Tudose, BPU-5, Applied Physics, pag. 1677-1681, 2003

 

  1. Presentation at national and international conferences

- “Superhard Ti(C,N) coatings obtained by plasma processes, V. Braic, M.Braic, M.Balaceanu, G.Pavelescu, A.Kiss, Proc. XVII-th Int. ESCAMPIG Conf., pag. 189-190, Constanta, Sept. 2004

-  „Nitride and carbide multilayer coatings” prezentata la Workshop on Surface engineering, 18 October 2003, Magurele, Bucharest.

 

  1. Patent

RO122134 (B1)/2009            

Multilayer covering material, M. Balaceanu, V. Braic, M. Braic, A. Vladescu