In-Situ TiB2-TiC-Al2O3 Composite Coating on Aluminum by Laser Surface Modification

被引：19

作者：

Sahu, Jageshwar Kumar ^{[1
]}

Sahoo, Chinmaya Kumar ^{[1
]}

Masanta, Manoj ^{[1
]}

机构：

[1] Natl Inst Technol Rourkela, Dept Mech Engn, Rourkela 769008, India

来源：

MATERIALS AND MANUFACTURING PROCESSES | 2015年 / 30卷 / 06期

关键词：

Ceramics; Coatings; Composites; In-situ; Lasers; Micro-hardness; Microstructure; XRD; METAL-MATRIX COMPOSITE; WEAR-RESISTANCE; MICROSTRUCTURE; SHS; FABRICATION; STELLITE-6; BEHAVIOR; AL;

D O I：

10.1080/10426914.2014.984225

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To improve the surface hardness of aluminum, in-situ TiB2-TiC-Al2O3 composite coating was deposited on it by pre-placed laser coating process using precursor mixture of (TiO2+B4C) and (TiO2+B4C+Al). Pulsed Nd:YAG laser was used to produce coating track by scanning a laser beam in overlapped condition. Multiple tracks again overlapped to get a wider coating area. Phase constituents and microstructure of the deposited coating were studied by XRD and FESEM analysis. Vickers micro-hardness tester was used to measure micro-hardness of the coating. Results indicate that, in appropriate laser processing condition, coating was obtained with metallurgical bonding to aluminum substrate. XRD and microstructure analysis confirms the formation of TiB2. TiC, and Al2O3 in the coating layer through in-situ reaction of reactant powders. Micro-hardness of the coating was found appreciably higher in comparison to the as-received aluminum substrate, due to presence of hard ceramic particles produced during in-situ reaction and their grain refinement for rapid cooling.

引用

页码：736 / 742

页数：7

共 31 条

[1] Synthesis of aluminium-cementite metal matrix composite by mechanical alloying [J].

Chaira, Debasis ;

Sangal, S. ;

Mishra, B. K. .

MATERIALS AND MANUFACTURING PROCESSES, 2007, 22 (04) :492-496

[2] Impact wear resistance of Stellite 6 hardfaced valve seats with laser cladding [J].

Chang, Shu-Shuo ;

Wu, Hsieh-Chen ;

Chen, Chun .

MATERIALS AND MANUFACTURING PROCESSES, 2008, 23 (07) :708-713

[3] Phase constituents and microstructure of laser synthesized TiB2-TiC reinforced composite coating on steel [J].

Du, Baoshuai ;

Paital, Sameer R. ;

Dahotre, Narendra B. .

SCRIPTA MATERIALIA, 2008, 59 (10) :1147-1150

[4] Synthesis of TiB2-TiC/Fe nano-composite coating by laser surface engineering [J].

Du, Baoshuai ;

Paital, Sameer R. ;

Dahotre, Narendra B. .

OPTICS AND LASER TECHNOLOGY, 2013, 45 :647-653

[5] Laser cladding of MMC coatings on aluminium substrate: influence of composition and micro structure on mechanical properties [J].

Dubourg, L ;

Ursescu, D ;

Hlawka, F ;

Cornet, A .

WEAR, 2005, 258 (11-12) :1745-1754

[6] A critical study on machining of Al/SiC composites [J].

Karthikeyan, R ;

Ganesan, G ;

Nagarazan, RS ;

Pai, BC .

MATERIALS AND MANUFACTURING PROCESSES, 2001, 16 (01) :47-60

[7] Laser surface engineered TiC coating on 6061 Al alloy: microstructure and wear [J].

Katipelli, LR ;

Agarwal, A ;

Dahotre, NB .

APPLIED SURFACE SCIENCE, 2000, 153 (2-3) :65-78

[8] Dense nanocrystalline TiB2-TiC composites formed by field activation from high-energy ball milled reactants [J].

Lee, JW ;

Munir, ZA ;

Ohyanagi, M .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 325 (1-2) :221-227

[9] Effect of sintering process on the microstructures and properties of in situ TiB2-TiC reinforced steel matrix composites produced by spark plasma sintering [J].

Li, Binghong ;

Liu, Ying ;

Li, Jun ;

Cao, Hui ;

He, Lin .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2010, 210 (01) :91-95

[10]

Mabhali L.A.B., 2010, MAT MANUFACTURING PR, V25, P1397

← 1 2 3 4 →