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to cracking and spallation. The failure mode of the oxide scale at higher temperatures is contributed to the physical delamination in the scales due to the initiation and propagation of micro-cracks......
and fatigue delamination in subsurface stratum, which results to the higher wear rate compared with the pure nickel plate. The enviromental embrittlement gradually affect the worn surface during......
of fast cooling, the two coating samples are fast damaged only after some cycles. After 40 cycles, some bulges are found on the single coating surface, and the interfacial delamination occurs......
接触载荷对7075铝合金扭转复合微动摩擦学行为的影响沈明学1, 2,杨 莎1,周 琰1,蔡振兵1,朱旻昊1(1. 西南交通大学 牵引动力国家重点实验室 摩擦学研究所,成都 610031; 2. 浙江工业大学 过程装备及其再制造教育部工程研究中心,杭州 310032)摘 要:在新型扭转复合微动试验机上,以7075铝合金平面/GCr15钢球配副为研究对象,研究不同接触载荷对7075铝合金扭转复合微动磨损行为的影响.在动力学特性分析的基础上结合磨痕形貌微观观察,研究7075铝合金扭转复合微动的磨损机理.结果表明:接触载荷明显地改变微动运行区域,随着接触载荷的增加,微动推迟进入混合区和滑移区,且......
is fatigue delamination and abrasive wear. The friction coefficient curves fluctuate in distilled water. The friction coefficient of GCr15/TC4 is larger than that of Si3N4/TC4 and the peak mutation......
under low relative humidity to delamination wear under high relative humidity. Key words: C/C composites; relative humidity; friction; wear properties 炭/炭复合材料是以炭纤维增强炭基体的复合材料,可作增强相的炭纤维有聚丙烯腈炭纤维,沥青基炭纤......
. Scanning electron microscopy (SEM) observation of the worn pin surface revealed severe adhesion, delamination, and abrasion wear mechanisms at temperatures of 150, 200, and 250 °C, respectively. At 150... is delaminated to produce platelet-shaped wear debris [29]. Thus, as the temperature increases from 150 to 200 °C, the delamination wear is induced, which leads to the increase in wear rate......
and debris revealed that the wear mechanism was changed from mainly adhesion in pure copper to a combination of abrasion and delamination in Cu/MoS2 composites. Key words: copper matrix composite... disks with increasing MoS2 content leading to lowered abrasion resistance of the materials. In addition, delamination is observed to be operative during sliding wear of 10% MoS2 composite loaded with 1......
and presented in three stages were discussed in detail. The mechanisms of torsional fretting wear of aluminum alloy are mainly oxidative wear, abrasive wear and delamination in the three fretting regimes... behaviour and wear mechanism, especially in wet air[12-14]. The results from the polymer indicated that crazing and delamination were the major damage mechanisms for PMMA and ultra-high molecular mass......
behavior of C/SiC T-section under pulling load was investigated, and especially the delamination behavior was studied by introducing the cohesive zone model into the finite element modeling. It was found that for C/SiC T-section under pulling load, the maximum critical delamination load was about1075 N in the present work, and the interface delamination was the main failure mode. It was verified......