Study on Metal/Diamond Binary Composite Coatings by Cold Spray

2007 ◽  
Vol 534-536 ◽  
pp. 441-444 ◽  
Author(s):  
Hyung Jun Kim ◽  
D.H. Jung ◽  
J.H. Jang ◽  
Chang Hee Lee
Keyword(s):  
Cold Spray ◽  
Spray Deposition ◽  
Composite Coatings ◽  
Microstructural Characterization ◽  
Deposition Efficiency ◽  
Spray Process ◽  
Sprayed Coatings ◽  
Binary Composite

Metal/diamond binary composite coatings on Al substrate without grit blasting were deposited by cold spray process with in-situ powder preheating. Microstructural characterization of the as-sprayed coatings with different diamond size, strength and with/without Ti coating on diamond was carried out by OM and SEM. The assessment of basic properties such as tensile bond strength and hardness of the coatings, and the deposition efficiency was also carried out. Particular attention on the composite coatings was on the diamond fracture phenomenon during the cold spray deposition and the interface bonding between the diamond and the Fe-based metal matrix.

Microstructural Characterization of In Situ Reaction TiB2/Zn-30Al-1Cu Composites Prepared by Spray Deposition Process

2014 ◽  
Vol 1015 ◽  
pp. 688-691 ◽  
Author(s):  
Feng Wang ◽  
Qiang Zhang ◽  
Bai Qing Xiong ◽  
Yong An Zhang ◽  
Hong Wei Liu ◽  
...  
Keyword(s):  
Spray Deposition ◽  
Microstructural Characterization ◽  
Deposition Process ◽  
Deposition Technique ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Scanning Electron

An innovative spray deposition technique has been applied to produce in situ TiB2/Zn-30Al-1Cu composites. The microstructures of the spray-deposited composite were studied using scanning electron microscopy, transmission electron microscope and X-ray diffraction. The results have shown that the TiB2particulates are formed in the microstructure. It was found that the TiB2particles were distributed in Zn-30Al-1Cu matrix uniformly, and the TiB2particles are about 2μm in size.

scholarly journals Synthesis of carbon nanotube reinforced Al matrix composite coatings via cold spray deposition

2021 ◽  
Vol 405 ◽  
pp. 126676
Author(s):  
Xinliang Xie ◽  
Zhanqiu Tan ◽  
Chaoyue Chen ◽  
Yingchun Xie ◽  
Hongjian Wu ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Cold Spray ◽  
Matrix Composite ◽  
Spray Deposition ◽  
Composite Coatings ◽  
Al Matrix Composite ◽  
Al Matrix

Multifunctional Bioceramic Composite Coatings Deposited by Cold Spray

2019 ◽  
Vol 813 ◽  
pp. 228-233
Author(s):  
Kiran G. Judd ◽  
Mala M. Sharma ◽  
Timothy J. Eden
Keyword(s):  
Cold Spray ◽  
Composite Coatings ◽  
Total Porosity ◽  
Substrate Material ◽  
The Novel ◽  
Composite Powders ◽  
Bioactive Coatings ◽  
Spray Process ◽  
Novel Approach ◽  
Before And After

Bioactive coatings have predominately been explored through plasma spray; but this technique has associated heat and melting of the feedstock materials thereby degrading the novel bioactive properties of hydroxyapatite (HA), as well as deteriorating the adhesion of the coating to the implant. The current study discusses a novel approach to producing biocompatible coatings that have been deposited at temperatures well below their melting point. The cold spray process was used to deposit 100 wt.% titanium (Ti) and composite powders with 80 wt% titanium (Ti) and 20 wt% hydroxyapatite (HA) onto Al6061, 316SS and Ti-6Al-4V substrates with the aim of achieving well-bonded homogeneous coatings; the effect of process parameters and substrate material was investigated. Preliminary results indicate the phase composition of the HA remained the same before and after synthesis of coating. Dense composite coatings were obtained with thicker coatings yielding the least amount of total porosity.

scholarly journals Microstructural characterization of a Canadian oil sand

2012 ◽  
Vol 49 (10) ◽  
pp. 1212-1220 ◽  
Author(s):  
Dinh Hong Doan ◽  
Pierre Delage ◽  
Jean François Nauroy ◽  
Anh Minh Tang ◽  
Souhail Youssef
Keyword(s):  
Three Dimensional ◽  
Microstructural Characterization ◽  
Water Layer ◽  
3D Image ◽  
Oil Sand ◽  
X Ray ◽  
Mcmurray Formation ◽  
Gas Expansion

The microstructure of oil sand samples extracted at a depth of 75 m from the estuarine Middle McMurray Formation (Alberta, Canada) has been investigated using high resolution three-dimensional (3D) X-ray microtomography (µCT) and cryo scanning electron microscopy (CryoSEM). µCT images evidenced some dense areas composed of highly angular grains surrounded by fluids, which are separated by larger pores full of gas. In dense areas, 3D image analysis provided porosity values comparable with in situ log data and macroscopic laboratory determinations, showing that they are representative of intact states. µCT hence provided some information on the morphology of the cracks and disturbance created by gas expansion. The CryoSEM technique, in which the sample is freeze fractured within the SEM chamber prior to observation, provided pictures in which the (frozen) bitumen clearly appears between the sand grains. No evidence of the existence of a thin connate water layer between grains and the bitumen, frequently mentioned in the literature, has been obtained. Bitumen appears to strongly adhere to the grains, with some grains being completely coated. The curved shape of some bitumen menisci suggests a bitumen wet behaviour.

Investigation and Characterization of Cr3C2-Based Wear-Resistant Coatings Applied by the Cold Spray Process

2006 ◽  
Vol 15 (3) ◽  
pp. 400-412 ◽  
Author(s):  
Douglas E. Wolfe ◽  
Timothy J. Eden ◽  
John K. Potter ◽  
Adam P. Jaroh
Keyword(s):  
Cold Spray ◽  
Cold Spray Process ◽  
Wear Resistant ◽  
Wear Resistant Coatings ◽  
Spray Process
Sign in / Sign up

Export Citation Format

Share Document