Slurry Erosion Performance Study of Detonation Gun-Sprayed WC-10Co-4Cr Coatings on CF8M Steel Under Hydro-Accelerated Conditions

被引：32

作者：

Bhandari, Sanjeev ^{[2
]}

Singh, Harpreet ^{[1
]}

Kumar, Harmesh ^{[3
]}

Rastogi, Vikas ^{[4
]}

机构：

[1] Indian Inst Technol Ropar, Rupnagar, India

[2] Baba Banda Singh Bahadur Engn Coll, Fatehgarh Sahib, India

[3] Panjab Univ, Univ Inst Engn & Technol, Chandigarh 160014, India

[4] St Longowal Inst Engn & Technol, Longowal, Sangrur, India

来源：

JOURNAL OF THERMAL SPRAY TECHNOLOGY | 2012年 / 21卷 / 05期

关键词：

cermet coating; D-gun spraying; high-speed erosion testing; slurry erosion; SOLID PARTICLE EROSION; WEAR-RESISTANCE; STAINLESS-STEEL; MICROSTRUCTURE; ALLOYS;

D O I：

10.1007/s11666-012-9799-1

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In the current investigation, cermet coatings (WC-10Co-4Cr) were deposited on CF8M steel by detonation gun (D-gun) thermal spraying process. Subsequently, the slurry erosion behaviors of the coated and bare steels were investigated using a high-speed erosion test rig. Slurry collected from an actual hydro power plant was used as the abrasive media. Effects of concentration (ppm), average particle sizes and rotational speed on the slurry erosion behaviors of coated and bare steels under different experimental conditions were studied. The analysis of eroded samples was done using SEM and stylus profilometry. Signatures of microcutting, fracture of well-bonded WC grains, and fragmentations were observed on the eroded surface of WC-10Co-4Cr coating, while signatures of formation of plowing, lips, shearing of platelet, formation of crater, and micro-cutting were observed on the eroded surface of CF8M steel.

引用

页码：1054 / 1064

页数：11

共 25 条

[1]

[Anonymous], SURFACE ENG WEAR RES

[2] Sand erosion of Pelton turbine nozzles and buckets: A case study of Chilime Hydropower Plant [J].

Bajracharya, T. R. ;

Acharya, B. ;

Joshi, C. B. ;

Saini, R. R. ;

Dahhaug, O. G. .

WEAR, 2008, 264 (3-4) :177-184

[3] Slurry erosion studies of hydroturbine steels under hydroaccelerated conditions [J].

Bhandari, Sanjeev ;

Singh, Harpreet ;

Kansal, Harmesh Kumar ;

Rastogi, Vikas .

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY, 2012, 226 (J3) :239-250

[4] Slurry Erosion Behaviour of Detonation Gun Spray Al2O3 and Al2O3-13TiO2-Coated CF8M Steel Under Hydro Accelerated Conditions [J].

Bhandari, Sanjeev ;

Singh, Harpreet ;

Kansal, Harmesh Kumar ;

Rastogi, Vikas .

TRIBOLOGY LETTERS, 2012, 45 (02) :319-331

[5] Solid particle erosion behaviour of ferrous and non-ferrous materials and correlation of erosion data with erosion models [J].

Harsha, A. P. ;

Bhaskar, Deepak Kumar .

MATERIALS & DESIGN, 2008, 29 (09) :1745-1754

[6]

Hattori S., 2002, TURBOMACHINERY, V30, P644

[7]

Hector M.C.I., 1995, WEAR, V186-187, P465

[8]

Joshi S. V., 1991, T INDIAN CERAM SOC, V50, P50

[9] Fine-particle slurry wear resistance of selected tungsten carbide thermal spray coatings [J].

Knapp, JK ;

Nitta, H .

TRIBOLOGY INTERNATIONAL, 1997, 30 (03) :225-234

[10] Solid particle erosion of thermal sprayed coatings [J].

Kulu, P ;

Hussainova, I ;

Veinthal, R .

WEAR, 2005, 258 (1-4) :488-496

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