Abstract
Mechanical parts have a problem of wear when used in extreme environments. Aluminum, most used in the industrial field, is a representative material of light weight, but its wear resistance is not good. To resolve the wear problem of such materials, research and development of surface thin film deposition technology has been increasing. Wear resistance was investigated after the Ti thin film was deposited by sputtering, one of the main methods of this technique. The smaller the surface roughness value and the thicker the thin film, the better the wear resistance. However, when a thin film is deposited for a predetermined time or less, the bonding strength with the base metal is lowered and the wear resistance is confirmed as low.
Highlights
Mechanical parts require light and high wear resistance
Both the specimen and the base metal on which the thin film was deposited showed hardness values between about 150 and 160 Hv regardless of surface roughness and thin film thickness. e standard deviation values for this data are shown in Figure 2. is result is considered because the indenter is pressed deeper than the thickness of the thin film during the hardness measurement
The wear test was conducted to investigate the effect of surface roughness and thin film thickness on wear characteristics
Summary
Mechanical parts require light and high wear resistance. Aluminum alloys, which are representative materials of light weight, are widely used in manufacturing fields such as the automotive, aerospace, and defense industries because of their excellent mechanical properties and excellent ductility and high strength, toughness, and fatigue resistance [1,2,3,4]. In surface thin film deposition technology, properties of coating methods such as deposition rate, thin film thickness, and bonding of substrate and coating can greatly affect surface quality [13]. Various methods such as sputtering, PLD (pulsed laser deposition), and DLC (diamond-like carbon) have been studied for the manufacture of thin films [14], and among them, magnetron sputtering methods having high adhesion are most commonly used [15, 16]. As a result of the experiment, it was found that fatigue life can be greatly reduced at high working stress
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