Microstructure and Grain Abrasion Properties of TiC-xNi Coatings Prepared by Electro-Thermal Explosion Ultra-High Speed Spraying

et al. 2010

KEM

To characterize wear behaviors of TiC ceramic particulate-reinforced metal matrix cermets in abominable condition, wear-resistance test was practiced in grain abrasive wear with the TiC-xNi cermets in-situ fabricated by self-propagating high-temperature synthesis method combined with pseudo hot iso-static pressing. Grain abrasion test was conducted with the MLS-225 type tester. Wear resistance was evaluated as weight loss obtained after each period of 10 minutes. Wear resistance of the cermets increased with the increase of TiC content in the composites. SEM was employed to analyze the wear process and wear mechanism. SEM examination of the wear tracks in the worn surface suggests that abrasive wear mechanisms of different binder content cermets are similar. The worn surface is characterized by long and deep parallel grooves. The fracturing of bigger carbide grains and carbide framework by a fatigue process under repeated abrasion is followed by weight loss of the material.

“…Wear resistance was evaluated as weight loss obtained after each period of 10 min. The experimental details of abrasive experiments were given in previous work [9].…”

Section: Methodsmentioning

confidence: 99%

Wear Resistance of TiC Ceramic Particulate-Reinforced Metal Matrix Cermets

et al. 2010

KEM

“…), silicide (MoSi 2 ), and borides (TiB 2 , ZrB 2 ) cermet coatings using electro-thermal explosion ultrahigh speed spraying technology and carbide and borides cermet claddings (thickness 1-10 mm) using plasma reaction synthesis technology [37]. This technology had been applied on fan impellers, rollers, water wall tubes, and superheater tubes in power and cement plants, extending the lifespan of these components up to 2-6 times beyond the original parts.…”

Section: Cermet Coatings and Claddings By New Technologies: Plasma Rementioning

confidence: 99%

Technology for the preparation and application of cermet coatings and claddings in thermal power plants

Front. Energy Power Eng. China

2010

“…A MLS-225 wet sand three-body grain abrasion tester is used to measure the wear resistance of the specimen. The MLS-225 test system consists of a rubber rim steel wheel of 178mm in diameter and 70 HA in hardness which is rotated in a bath of abrasive slurry consisting of water and silica particles [12]. The slurry is picked up by the rubber rim steel wheel and passes into the interface between the rubber rim wheel and the specimen that is pressed against the wheel by a dead-weight loaded lever.…”

Section: Experimental Procedurementioning

confidence: 99%

Microstructure and Grain Abrasion Properties of (Ti,W)C-Ni Cermet Cladding Layers Prepared by Tungsten Inert Gas Cladding

2011

AMM

Self Cite

In this work, tungsten inert gas cladding (TIG), is utilized to in-situ synthesize the (Ti,W)C based cermet cladding layers. The microstructure and microhardness of the cladding layers were analyzed by scanning electron microscopy (SEM) and microhardness tester. The grain abrasion resistance of the cladding layers is also discussed. The grain abrasion resistance of the coating is also discussed. The results showed that excellent bonding between the coating and the AISI 1045 steel substrate was uniform, continuous and almost defect-free. (Ti,W)C cladding layers have compact microstructure and high microhardness. The grain abrasion resistance of the coating is attributed by the compact microstructure.