Dry Sliding Friction and Wear Mechanism of TiC-TiB2Particulate Locally Reinforced Mn-Steel Matrix Composite from a Cu-Ti-B4C System via a Self-Propagating High-Temperature Synthesis (SHS) Casting Route

2015 ◽  
Vol 58 (3) ◽  
pp. 567-575 ◽  
Author(s):  
Yunhong Liang ◽  
Qian Zhao ◽  
Zhiwu Han ◽  
Zhihui Zhang ◽  
Xiujuan Li ◽  
...  
Keyword(s):  
High Temperature ◽  
Friction And Wear ◽  
Sliding Friction ◽  
Dry Sliding ◽  
Steel Matrix ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
Shs Casting ◽  
Mn Steel ◽  
Steel Matrix Composite

scholarly journals Effect of New Superhard Phases Formation on Properties of Composite Processed by SHS

2012 ◽  
Vol 527 ◽  
pp. 137-142 ◽  
Author(s):  
Lembit Kommel ◽  
Toomas Tamm ◽  
Raido Metsvahi
Keyword(s):  
Heat Treatment ◽  
High Temperature ◽  
Friction Coefficient ◽  
Tribological Behavior ◽  
Dry Sliding ◽  
Initial Powder ◽  
Nitrogen Flow ◽  
Gaseous Nitrogen ◽  
Temperature Synthesis ◽  
High Temperature Synthesis

A composite was produced from initial powder mixture of B4C (70 wt.%) and Al (30 wt. %) with WC-Co additives introduced during ball-milling and acting as catalysts by self-propagating high-temperature synthesis and followed by heat treatment of raw samples under gaseous nitrogen flow at 650, 800, 1000, 1150 and 1450 °C, respectively. Formation of different new superhard phases was detected via XRD investigation and analysis of microstructures. Micromechanical properties were tested by nanoindentation. The tribological behavior in dry sliding conditions of the composite was investigated using the ball-on-disk technique against alumina balls. The friction coefficient of the composite increased and wear rate decreased with formation of c-BC2N, c-BN, B13C2, W2B5, Al3BC, AlN, etc. contents during heat treatment at increased temperatures.

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