Composite Material Based on Polytetrafluoroethylene and Al–Cu–Fe Quasi-Crystal Filler with Ultralow Wear: Morphology, Tribological, and Mechanical Properties

Tribological, Mechanical and Thermal Properties of Fluorinated Ethylene Propylene Filled with Al-Cu-Cr Quasicrystals, Polytetrafluoroethylene, Synthetic Graphite and Carbon Black

“…The first basic explanation is that upon friction contact FEP with the steel counterbody a rigid QC Al 73 Cu 11 Cr 16 filler has excellent load-carrying capacity, which restricts the wear and damage of the soft FEP matrix. The second mechanism may consist of the formation of FEP/QC Al 73 Cu 11 Cr 16 stable frictional transfer film on the counterbody surface [ 32 ], which protects the composite from the rigid asperities of the steel counterbody. This explanation is confirmed by the analysis of optical images of the steel counterbodies after contact with an F0 and F1.25C1.25Q composite ( Figure 9 ).…”

“…Polytetrafluoroethylene- [ 31 , 32 ] and ethylene-tetrafluoroethylene [ 33 ]-based composites reinforced with QC were investigated. It was noted [ 32 ] that in contrast to the ultra-high molecular weight polyethylene-based composites, tested under the same conditions [ 23 ], a positive effect of QC on the wear resistance of polytetrafluoroethylene and ethylene-tetrafluoroethylene-based composites was observed, which was associated with better QC adhesion to fluoropolymers than to polyethylenes. This indicates that fluoropolymers should be considered as suitable matrices for QC-filled composites.…”

“…It should be noted that in most of composites discussed above icosahedral QC alloys of a Al-Cu-Fe [ 13 , 15 , 17 , 19 , 20 , 21 , 23 , 24 , 29 , 30 , 31 , 32 , 33 , 34 ] system or of Al-Cu-Fe systems alloyed with boron [ 14 , 16 , 26 ] were used as reinforcing particles. Indeed, Al-Cu-Fe is the most investigated QC-forming system, as the icosahedral QC phase in this system is thermodynamically stable, easy to synthesize, and possesses a number of advanced properties [ 35 ].…”

The Effect of Metal Filler on the Mechanical Performance of Epoxy Resin Composites

“…It is apparent that, as the filler content in the epoxy composite increases, the flexural modulus also increases in the range of 2% to 12%. This is due to an increase in the proportion of the hard and brittle phases in the cast iron filler in the epoxy matrix [19].…”

Elimination of Composition Segregation in 33Al–45Cu–22Fe (at.%) Powder by Two-Stage High-Energy Mechanical Alloying

“…Most studies on Al–Cu–Fe alloys were aimed at the synthesis of Al 63-70 Cu 20-25 Fe 10-12 quasicrystals of icosahedral structure [ 3 , 4 , 5 , 6 , 7 ] for a variety of applications: antimicrobial agents [ 8 ], decomposition of hazardous materials [ 9 ], carbon nanotube growth catalysts [ 10 ], magnetic materials [ 4 , 11 ], anodes in lithium batteries [ 12 ], fillers with ultralow wear [ 13 ], and catalysts in steam reforming of methanol [ 14 , 15 ]. Moreover, nanostructured powder alloys are becoming popular in traditional heterogeneous catalysis [ 16 , 17 ], e.g., in hydrogenation reactions of CO (CO 2 ) [ 18 ], synthesis of carbon fibers [ 19 ], decomposition of chlorine-containing hydrocarbons [ 20 , 21 ], decomposition of polymers [ 22 ], and in steam and dry reforming [ 23 ].…”