Effect of the surface microstructure ablated by femtosecond laser on the bonding strength of EBCs for SiC/SiC composites

2018 ◽  
Vol 424 ◽  
pp. 137-144 ◽  
Author(s):  
Zhaoyang Zhai ◽  
Wenjun Wang ◽  
Xuesong Mei ◽  
Ming Li ◽  
Jianlei Cui ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Bonding Strength ◽  
Surface Microstructure ◽  
Sic Composites

Spindle-Shaped Surface Microstructure Inspired by Directional Water Collection Biosystems to Enhance Interfacial Wetting and Bonding Strength

2021 ◽  
Vol 13 (11) ◽  
pp. 13760-13770
Author(s):  
Hailang Wan ◽  
Junying Min ◽  
Blair E. Carlson ◽  
Jianping Lin ◽  
Chengcheng Sun
Keyword(s):  
Bonding Strength ◽  
Surface Microstructure ◽  
Shaped Surface ◽  
Water Collection

Influence of surface microstructure on bonding strength of modified polypropylene/aluminum alloy direct adhesion

2019 ◽  
Vol 489 ◽  
pp. 392-402 ◽  
Author(s):  
Jing Chen ◽  
Kunpeng Du ◽  
Xiumin Chen ◽  
Youbing Li ◽  
Jin Huang ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Bonding Strength ◽  
Surface Microstructure

Strong Interface in CMCs, a Condition for Efficient Multilayered Interphases

1994 ◽  
Vol 365 ◽  
Author(s):  
Christine Droillard ◽  
Jacques Lamon ◽  
Xavier Bourrat
Keyword(s):  
Fracture Toughness ◽  
Bonding Strength ◽  
High Strength ◽  
Interfacial Behavior ◽  
Strain Behavior ◽  
High Toughness ◽  
Sic Fiber ◽  
Sliding Mechanism ◽  
Fiber Treatment ◽  
Sic Composites

ABSTRACTA fiber treatment was used to change the bonding strength of the Nicalon NLM 202 SiC fiber from weak to strong, in a series of 2D-SiC/SiC composites with multilayered interphases. The materials with the pre-treated fibers were compared to the same materials but reinforced with as received fibers. The stress-strain behavior and the fracture toughness were examined as a function of crack patterns identified by TEM. All the materials could be grouped into two distinct families: (i) materials reinforced with untreated fibers have a weak fiber bonding and are characterized by a low strength and a low toughness and (2) materials with the pre-treated fibers have a strong fiber bonding and are characterized by a high strength and a high toughness. This latter behavior is identified by TEM. It corresponds to a new interfacial behavior with a cohesive mode of interfacial cracking, involving branching and deflection by the successive interfaces. In the former family, the adhesive interfacial failure mode corresponds to the classical debond/sliding mechanism.

Influence of surface morphology on processing of C/SiC composites via femtosecond laser

2017 ◽  
Vol 102 ◽  
pp. 117-125 ◽  
Author(s):  
Zhaoyang Zhai ◽  
Wenjun Wang ◽  
Jie Zhao ◽  
Xuesong Mei ◽  
Kedian Wang ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Surface Morphology ◽  
Sic Composites

scholarly journals Effect of mass transfer channels on flexural strength of C/SiC composites fabricated by femtosecond laser assisted CVI method with optimized laser power

2021 ◽  
Vol 10 (2) ◽  
pp. 227-236
Author(s):  
Jing Wang ◽  
Liyang Cao ◽  
Yunhai Zhang ◽  
Yongsheng Liu ◽  
Hui Fang ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Femtosecond Laser ◽  
Chemical Vapor ◽  
Ceramic Matrix Composites ◽  
Strengthening Mechanism ◽  
Chemical Vapor Infiltration ◽  
Matrix Composites ◽  
Dense Band ◽  
Sic Composites ◽  
Transfer Channels

AbstractIn this study, femtosecond laser assisted-chemical vapor infiltration (LA-CVI) was employed to produce C/SiC composites with 1, 3, and 5 rows of mass transfer channels. The effect of laser machining power on the quality of produced holes was investigated. The results showed that the increase in power yielded complete hole structures. The as-obtained C/SiC composites with different mass transfer channels displayed higher densification degrees with flexural strengths reaching 546 ± 15 MPa for row mass transfer channel of 3. The strengthening mechanism of the composites was linked to the increase in densification and formation of “dense band” during LA-CVI process. Multiphysics finite element simulations of the dense band and density gradient of LA-CVI C/SiC composites revealed C/SiC composites with improved densification and lower porosity due to the formation of “dense band” during LA-CVI process. In sum, LA-CVI method is promising for future preparation of ceramic matrix composites with high densities.

scholarly journals Surface, microstructure, and tensile deformation characterization of LPBF SS316L microstruts micromachined with femtosecond laser

2021 ◽  
pp. 110045
Author(s):  
Abhi Ghosh ◽  
Sanchari Biswas ◽  
Tiffany Turner ◽  
Anne-Marie Kietzig ◽  
Mathieu Brochu
Keyword(s):  
Femtosecond Laser ◽  
Tensile Deformation ◽  
Surface Microstructure

Effects of surface microstructure and molding parameters on injection bonding strength of polyphenylenesulphide-aluminum alloy

2020 ◽  
Vol 10 (5) ◽  
pp. 640-647
Author(s):  
Zhenyu Xu ◽  
Ning Li
Keyword(s):  
Aluminum Alloy ◽  
Injection Molding ◽  
Bonding Strength ◽  
Direct Injection ◽  
Processing Parameters ◽  
Surface Microstructure ◽  
Injection Molding Process ◽  
Molding Process ◽  
Orthogonal Test Design ◽  
Highly Correlated

The direct injection molding process of PPS-aluminum alloy composite parts under vacuum condition was conducted and the processing parameters were optimized through the numerical simulation and orthogonal test design. The effect of surface microstructure of the aluminum alloy splines and injection molding processing parameters on the bonding strength of the composite parts were discussed. The results show that the bonding strength of the composite parts increases with not only the increase in the diameter and quantity of the microscopic pores and also the surface roughness of the aluminum alloy splines. The bonding strength can also been improved under a higher vacuum. The bonding strength is highly correlated to the micromechanical interlocking structure formed by the PPS embedding into the rough surface of the aluminum alloy splines.

Femtosecond laser-induced periodic surface microstructure on dental zirconia ceramic

2018 ◽  
Vol 229 ◽  
pp. 74-77 ◽  
Author(s):  
Hongbo Zhou ◽  
Chen Li ◽  
Zhenkai Zhou ◽  
Ruoyan Cao ◽  
Yu Chen ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Zirconia Ceramic ◽  
Surface Microstructure ◽  
Periodic Surface

Effect of machining parameter on femtosecond laser drilling processing on SiC/SiC composites

2017 ◽  
Vol 96 (5-8) ◽  
pp. 1795-1811 ◽  
Author(s):  
Yongsheng Liu ◽  
Ruoheng Zhang ◽  
Weinan Li ◽  
Jing Wang ◽  
Xiaojun Yang ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Drilling ◽  
Sic Composites ◽  
Machining Parameter
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