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In order to simulate the wear of the valves and valve seat inserts of automotive engines, impact wear tests were conducted using rings made of a JIS SUH36 steel valve material and disks made of a sintered alloy valve seat insert material. Test conditions were as follows: impact energy of 0.588 J, dry air of room temperature, 200°C and 400°C, and sliding speeds of 0-0.8 m s -1 . Under...
The erosion-corrosion behavior of Ti-6A1-4V exposed to air environment up to 800 o C has been studied. Erosion experiments were performed in a sand-blast type of test rig at seven different temperatures. The specimens were heat treated by annealing and solution treating and aging. The target specimens were eroded with 120 grit silicon carbide particles at impact velocities from 55 to 110 m...
A whirling-arm erosion-corrosion rig has been designed and constructed to allow studies under gaseous conditions of high-sulphur, low-oxygen activities at high temperatures; these environments are pertinent in processes such as gasification of coal and catalytic cracking of oil. The system can operate at particle impact velocities up to 30 m s -1 , particle impact fluxes up to 1 g cm...
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