Wear resistance mechanism of engine piston skirt coating under cold start condition

2020 ◽  
Vol 118 ◽  
pp. 104912
Author(s):  
Tan Xuguang ◽  
Zhang Jian ◽  
Xiong Peiyou
Keyword(s):  
Wear Resistance ◽  
Resistance Mechanism ◽  
Cold Start ◽  
Piston Skirt ◽  
Engine Piston

Effects of attapulgite on the worn surface and fretting wear resistance property of UHMWPE composites

2020 ◽  
Vol 72 (7) ◽  
pp. 821-827
Author(s):  
Zhaojie Meng ◽  
Yunxia Wang ◽  
Xiaocui Xin ◽  
Hao Liu ◽  
Yunfeng Yan ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Peer Review ◽  
Filler Content ◽  
Resistance Mechanism ◽  
Three Dimensional ◽  
Fretting Wear ◽  
Wear Property ◽  
Pressing Method ◽  
Content Type ◽  
Worn Surface

Purpose The purpose of this study is to examine the fretting wear property of ultra-high molecular weight polyethylene (UHMWPE)-based composites reinforced by different content of attapulgite. Design/methodology/approach A series of composites were prepared by a hot-pressing method. Fretting tests were carried out using an SRV-IV oscillating reciprocating friction wear tester with a load of 10 N and a frequency of 100 Hz. The morphology of the fracture structure and the worn surface was observed by field-emission scanning electron microscopy, X-ray diffraction and a non-contact three dimensional surface profiler. Findings With the addition of attapulgite, the microstructure of the composites become more regular, and their heat resistance improved. Furthermore, the friction coefficient and the specific wear rate of the composites with lower filler content reduced compared with that of neat UHMWPE, and the optimum filler content is 1 per cent. Originality/value The study investigated the fretting resistance mechanism of the attapulgite in the UHMWPE matrix. The results could help to provide some experimental evidence for the broader application of silicates on the fretting wear resistance of polymers. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-10-2019-0420/

Wear-resistance mechanism of an Al–12Si alloy reinforced with aluminosilicate short fibers

1999 ◽  
Vol 32 (12) ◽  
pp. 721-724 ◽  
Author(s):  
G.H Cao ◽  
S.Q Wu ◽  
J.M Liu ◽  
Z.G Liu
Keyword(s):  
Wear Resistance ◽  
Resistance Mechanism ◽  
Short Fibers

scholarly journals Wear Resistance Mechanism of ZTAP/HCCI Composites with a Honeycomb Structure

Metals ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 588 ◽  
Author(s):  
Mojin Zhou ◽  
Yudong Sui ◽  
Xiaoyu Chong ◽  
YeHua Jiang
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Abrasive Wear ◽  
Layer Structure ◽  
Resistance Mechanism ◽  
Honeycomb Structure ◽  
Protection Effect ◽  
High Chromium ◽  
High Chromium Cast Iron ◽  
Chromium Cast Iron

The abrasive wear resistance of zirconia toughened alumina (ZTA) ceramic particle reinforced high chromium cast iron (HCCI) composites has been systematically investigated using a moving wedge type of apparatus. The results of three-body abrasive wear show that the wear resistance of the composites with honeycomb is three times higher than that of the high chromium cast iron. The wear resistance of the composites with a honeycomb structure is close to that of the layer structure and is higher than that of the HCCI because the honeycomb wall in the cell honeycomb structure is prominent and because the honeycomb core is depressed. The wear mechanisms of the composites are mainly microcutting and fatigue fractures. The honeycomb structure forms a “macrocosmic shadow protection effect” and a “microcosmic shadow protection effect” to protect each composite and to improve the wear resistance of the composites.

Self-lubrication and wear-resistance mechanism of graphene-modified coatings

2020 ◽  
Vol 46 (10) ◽  
pp. 15915-15924
Author(s):  
Zhang Shu ai ◽  
Gong Xiao feng ◽  
Yu Ren ping ◽  
Xing Qin ◽  
Xu Ling ping ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Resistance Mechanism

scholarly journals Strengthening Properties and Wear Resistance of the Cu-xNi-yCo-Cr-Si Alloy by Varying Ni/Co and Zr Addition

Lubricants ◽  
2021 ◽  
Vol 9 (10) ◽  
pp. 96
Author(s):  
Denis Ariel Avila-Salgado ◽  
Arturo Juárez-Hernández ◽  
José Cabral-Miramontes ◽  
José Luis Camacho-Martínez
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Wear Rate ◽  
Solution Heat Treatment ◽  
Resistance Mechanism ◽  
Microstructural Characterization ◽  
Aging Heat Treatment ◽  
Solidification Sequence ◽  
Zr Addition ◽  
Co Concentrations

This work examines the effect of nickel (Ni) and cobalt (Co) concentrations on wear resistance behavior of Cu-xNi-yCo-Cr-Si (x = 8−9 wt%, y = 1−2 wt%) and the zirconium (Zr) addition, in order to obtain an alloy with similar or better properties than the C17510 alloy. In this study, hardness and wear resistance mechanism behavior were associated with the microstructure evolution of these alloys with different aging strengthening conditions. Different heat treatments (HT) were applied to three alloys Cu-8Ni-2Co-1.6Cr-2Si wt% (L1), Cu-8.5Ni-1.5Co-1.6Cr-2Si wt% (L2) and Cu-9Ni-1Co-1.6Cr-2Si-0.18Fe-0.3Zr wt% (L3), the properties obtained were compared with C17510 alloy. Specimens were characterized by different metallographic techniques; the microstructural characterization was made with scanning electron microscopy (SEM) and revealed regions of dendritic morphologies. The solidification sequence is primary Cu dendrites and some phases in the interdendritic regions. The solution heat treatment decreased (ST) the Hardness Rockwell B (HRB) and wear rate resistance, and there was an increase with the first aging heat treatment (HT1) for each alloy. The most outstanding combination of properties was found for Cu-8.5Ni-1.5Co-1.6Cr-2Si wt% alloy (L2C3) with 100 ± 1 HRB and specific wear rate resistance of 1.2 × 10−4 mm3/Nm, after the first aging heat treatment.

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