Inorganic-organic nanocomposite networks: Structure, curing reaction, properties, and hard coating performance

2021 ◽  
pp. 109112
Author(s):  
Kuan Hoon Ngoi ◽  
Jia Chyi Wong ◽  
Chin Hua Chia ◽  
Kyeong Sik Jin ◽  
Heesoo Kim ◽  
...  
Keyword(s):  
Hard Coating ◽  
Coating Performance ◽  
Curing Reaction ◽  
Networks Structure

Evaluation of Hard Coating Performance in Drilling Compacted Graphite Iron (CGI)

2013 ◽  
Vol 22 (10) ◽  
pp. 3155-3160 ◽  
Author(s):  
José M. F. de Paiva ◽  
Fred L. Amorim ◽  
P. Soares ◽  
Ricardo D. Torres
Keyword(s):  
Hard Coating ◽  
Compacted Graphite Iron ◽  
Coating Performance ◽  
Compacted Graphite

Hard coating performance enhancement by using [Ti/TiN]n, [Zr/ZrN]n and [TiN/ZrN]n multilayer system

2010 ◽  
Vol 171 (1-3) ◽  
pp. 56-61 ◽  
Author(s):  
J.C. Caicedo ◽  
C. Amaya ◽  
L. Yate ◽  
O. Nos ◽  
M.E. Gomez ◽  
...  
Keyword(s):  
Performance Enhancement ◽  
Multilayer System ◽  
Hard Coating ◽  
Coating Performance

scholarly journals Key Problems Affecting the Anti-Erosion Coating Performance of Aero-Engine Compressor: A Review

Coatings ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 821 ◽  
Author(s):  
Guangyu He ◽  
Danyang Sun ◽  
Jiao Chen ◽  
Xiao Han ◽  
Zhaolu Zhang ◽  
...  
Keyword(s):  
Erosion Resistance ◽  
Preparation Method ◽  
Hard Coating ◽  
Future Research ◽  
Surface Microstructure ◽  
Coating Performance ◽  
Sand Erosion ◽  
Aero Engine ◽  
Engine Compressor ◽  
Aero Engines

Sand erosion has always been a key threat to the performance and service life of aero-engines. The compressor, the key component installed at the front of the aero-engine, suffers the most from sand erosion, especially compressors serving in deserts. Ceramic hard coating is a traditional way to improve the hardness and wear resistance of cutting and grinding tools. It may also be used to improve the erosion resistance of aero- engine compressor. However, the mechanism of erosion damage is complicated, which may include wear, secondary erosion, anisotropic erosion, impact, and fatigue. Recent research discovered the major problems with ceramic hard coating on aero-engine compressors. In this paper, these following problems are discussed: the design of coating material and structure, the preparation method and technology, the effects of droplets and clusters of coating surface, microstructure and characteristics of interface. The review of the major problems and possible solutions discussed in this paper may contribute to the future research on erosion coating theoretically and practically.

The Effect of Substrate Pretreatment on PVD TiN Hard Coating Performance

1999 ◽  
Vol 14 (2) ◽  
pp. 257-269
Author(s):  
M. H. EI-Shazly ◽  
M. EI-Sherbiny ◽  
A. Matthews ◽  
A. Leyland
Keyword(s):  
Hard Coating ◽  
Coating Performance ◽  
Substrate Pretreatment

Analysis of Ti-base Hard Coating Performance in Machining Process: A Review

2012 ◽  
Vol 12 (18) ◽  
pp. 1882-1890 ◽  
Author(s):  
Siow Ping Chuan ◽  
Jaharah A. Ghani ◽  
Siti Haryani Tomadi ◽  
Che Hassan Che Hassan
Keyword(s):  
Machining Process ◽  
Hard Coating ◽  
Coating Performance

scholarly journals Preparation of fluorine-free superhydrophobic and wear-resistant cotton fabric with a UV curing reaction for self-cleaning and oil/water separation

RSC Advances ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 4660-4671
Author(s):  
Yaofa Luo ◽  
Shuang Wang ◽  
Xihan Fu ◽  
Xiaosheng Du ◽  
Haibo Wang ◽  
...  
Keyword(s):  
Cotton Fabric ◽  
Uv Curing ◽  
Water Separation ◽  
Wear Resistant ◽  
Curing Reaction ◽  
Oil Water Separation ◽  
Oil Water ◽  
Self Cleaning

A durable superhydrophobic, self-cleaning cotton fabric based on UV curing was prepared and used in the field of oil/water separation.

Synthesis and properties of a benzoxazine monomer containing maleimide and biphenyl groups

2021 ◽  
pp. 095400832199674
Author(s):  
Tao Guo ◽  
Yang Fan ◽  
Chang Bo ◽  
Zhang Qi ◽  
Han Tao ◽  
...  
Keyword(s):  
Weight Loss ◽  
Loss Rate ◽  
Proton Nuclear Magnetic Resonance ◽  
Significant Weight Loss ◽  
Scanning Calorimetry ◽  
Weight Loss Rate ◽  
Reaction Heat ◽  
H Nmr ◽  
Curing Reaction ◽  
Dsc Curves

Benzoxazine resin exhibits excellent properties and is widely used in many fields. Herein, the synthesis of a novel compound, the bis(2,4-dihydro-2 H-3-(4- N-maleimido)phenyl-1,3-benzoxazinyl)biphenyl (BMIPBB), has been reported, which was synthesized by reacting N-(4-aminophenyl)maleimide (APMI), formaldehyde, and 4,4’-dihydroxybiphenyl. 1,3,5-three(4-(maleimido)phenyl)-1,3,5-triazine (TMIPT) was formed as an intermediate during the reaction. The proton nuclear magnetic resonance (1H-NMR) and Fourier transform-infrared (FTIR) spectroscopy experiments were conducted to determine the structure of BMIPBB. BMIPBB was obtained as a reddish-brown solid in 40.1% yield. The thermal properties of BMIPBB were investigated using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) techniques. Analysis of the DSC curves revealed that the broad peak representing the release of curing reaction heat appeared in the temperature range of 140–330°C. The peak temperature was 242.59°C and the heat of the reaction was 393.82 J/g, indicating that the rate of the curing reaction was low and the heat of the reaction was high. Analysis of the TGA results revealed that the weight loss rate was 5% at 110°C. The monomer exhibited a significant weight loss in the range of 320–500°C. The compound lost 50% of its weight at a temperature of 427°C.

scholarly journals Topology Optimization of Hard-Coating Thin Plate for Maximizing Modal Loss Factors

Coatings ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 774
Author(s):  
Haitao Luo ◽  
Rong Chen ◽  
Siwei Guo ◽  
Jia Fu
Keyword(s):  
Topology Optimization ◽  
Objective Function ◽  
Composite Plates ◽  
Optimization Method ◽  
Hard Coating ◽  
Design Variables ◽  
Coating Composite ◽  
Damping Materials ◽  
Topology Optimization Method ◽  
Loss Factors

At present, hard coating structures are widely studied as a new passive damping method. Generally, the hard coating material is completely covered on the surface of the thin-walled structure, but the local coverage cannot only achieve better vibration reduction effect, but also save the material and processing costs. In this paper, a topology optimization method for hard coated composite plates is proposed to maximize the modal loss factors. The finite element dynamic model of hard coating composite plate is established. The topology optimization model is established with the energy ratio of hard coating layer to base layer as the objective function and the amount of damping material as the constraint condition. The sensitivity expression of the objective function to the design variables is derived, and the iteration of the design variables is realized by the Method of Moving Asymptote (MMA). Several numerical examples are provided to demonstrate that this method can obtain the optimal layout of damping materials for hard coating composite plates. The results show that the damping materials are mainly distributed in the area where the stored modal strain energy is large, which is consistent with the traditional design method. Finally, based on the numerical results, the experimental study of local hard coating composites plate is carried out. The results show that the topology optimization method can significantly reduce the frequency response amplitude while reducing the amount of damping materials, which shows the feasibility and effectiveness of the method.

Sign in / Sign up

Export Citation Format

Share Document