Enhanced Interface Structure and Properties of Titanium Carbonitride-Based Cermets with the Extra Solid Phase...

Area of Science:

• Materials Science
• Mechanical Engineering
• Metallurgy

Background:

• Titanium carbonitride-based cermets are advanced materials with applications requiring high wear resistance.
• Controlling interface structure is crucial for optimizing cermet performance.
• The role of extra solid phase reactions in cermet interface engineering requires further investigation.

Purpose of the Study:

• To investigate the influence of extra solid phase reactions on the interface structure of titanium carbonitride-based cermets.
• To evaluate the impact of these reactions on the mechanical properties of the cermets.
• To understand how interface modification affects material performance.

Main Methods:

• Experimental synthesis of titanium carbonitride-based cermets with controlled extra solid phase reactions.
• Microstructural analysis to characterize the core/rim/binder interface structure.
• Mechanical testing to determine hardness, fracture toughness, and transverse rupture strength.

Main Results:

• Extra solid phase reactions induce a core/rim/binder interface with a coherent structure.
• This coherent interface significantly reinforces bonding strength.
• The improved interface inhibits crack propagation, enhancing toughness and abrasion resistance.

Conclusions:

• The extra solid phase reaction is a key factor in developing high-performance titanium carbonitride-based cermets.
• Achieving a coherent interface structure leads to superior mechanical properties.
• These findings offer a pathway for designing advanced cermets with enhanced durability.