The Effects of Nickel-Plating on Al2O3 Particles Reinforced Steel Matrix Composites

The wettability between ceramic particles and metal play an important role in fabrication of ceramic particles reinforced metal matrix composites(PRMMCs). In present paper, Al2O3 particles were coated with nickel by chemical plating to modify the preparation and properties of Al2O3 particles reinforced steel matrix composites. Using the Al2O3 particles treated by chemical nickel-plating, Al2O3 particles reinforced steel matrix composites were fabricated by powder metallurgy process(PM). And the wear resistance of the composites was investigated. The results show that: the nickel coating can fully and tightly cover on the surface of Al2O3 particles, and the nickel coating thickness is uniform about 2~3 micron; The nickel coating can effectively improve the uniform distribution of Al2O3 particles in the composites. And the treated Al2O3 particles can be tightly bonded with steel matrix,which improve the wear resistance of composites. The wear resistance of composites reinforced treated and untreated Al2O3 particles each is 2.5 and 1.6 times of Hadfield steel.

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Weldability and Toughness Evaluation of Ceramic Reinforced Steel Matrix Composites (TiB2-RSMC)

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.264-265.475 ◽

2011 ◽

Vol 264-265 ◽

pp. 475-483 ◽

Cited By ~ 2

Author(s):

E. Bayraktar ◽

F. Ayari ◽

D. Katundi ◽

J.P. Chevalier ◽

Frédéric Bonnet

Keyword(s):

Automotive Industry ◽

Crash Test ◽

Steel Matrix ◽

Matrix Composites ◽

Ceramic Particles ◽

Iron And Steel ◽

Specific Strength ◽

Toughness Evaluation ◽

Reinforced Steel ◽

Strength And Stiffness

This paper reports the production and weldability and toughness evaluation of TiB2 (ceramic particles) reinforced steel matrix composites. These ceramic particles are optimal reinforcements for steel matrix composites because of their high thermal stability at higher temperatures, high modulus of elasticity, good weldability, low density and relative stability within a steel matrix. This new composite family has received much attention as potential structural materials due to their high specific strength and stiffness. Thus, there is significant interest in developing iron and steel matrix composites and evaluating their dynamic behaviors due to their potential for use in the automotive industry. The goal of the research described in this paper is to study the usage of this new steel family in the manufacture of light structures. Therefore, titanium diboride TiB2 reinforced steel matrix composites were characterized by optical and scanning electron microscopy. The dynamic behaviours of the base metal and welded specimens were tested under impact crash test conditions.

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Fabrication of TiC Particles Reinforced Hadfield Steel Matrix Composite and its Wear-Resistance

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.336-338.1442 ◽

2007 ◽

Vol 336-338 ◽

pp. 1442-1444

Author(s):

Xiao Le Cheng ◽

Yi Min Gao ◽

Jian Dong Xing ◽

Min Tan ◽

Guo Shang Zhang ◽

...

Keyword(s):

Wear Resistance ◽

Liquid Phase Sintering ◽

Hadfield Steel ◽

Impact Loads ◽

Steel Matrix ◽

Matrix Composites ◽

Impact Wear ◽

Wear Resistant ◽

The Impact ◽

Wear Tests

The TiC particles are selected as reinforced phase and the Hadfield steel as matrix. The powder metallurgy liquid phase sintering technique is adopted to fabricate TiC particles reinforced Hadfield steel matrix composites. The effects of elements Mo and Ni on the performance of the composites were studied. The impact wear tester is adopted to investigate the wear-resistant property of the composites under the different impact loads. Adding Mo can improve the interfacial bonding between the Hadfield steel and TiC, and the best adding ratio between Mo and TiC is 1:3.68. Adding 2%(vol.%)Ni can significantly improve the density and hardness of the composites. The experiment results of impact wear tests show that under the condition of low and middling loads, the composites display the best wear-resistant properties, moreover, the more TiC content is, the better wear-resistance property is. Under 2.0J impact energy, the wear resistance of the composite containing 40%(vol.%) TiC is 1.3 times of Hadfield steel.

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