scholarly journals A novel biomimetic approach to the design of high-performance ceramic–metal composites

2009 ◽  
Vol 7 (46) ◽  
pp. 741-753 ◽  
Author(s):  
Maximilien E. Launey ◽  
Etienne Munch ◽  
Daan Hein Alsem ◽  
Eduardo Saiz ◽  
Antoni P. Tomsia ◽  
...  
Keyword(s):  
High Performance ◽  
Damage Tolerance ◽  
Metal Composite ◽  
Hierarchical Design ◽  
Metal Composites ◽  
Biological Design ◽  
Biomimetic Approach ◽  
Metal Composite Materials ◽  
Ceramic Suspensions ◽  
Metal Infiltration

The prospect of extending natural biological design to develop new synthetic ceramic–metal composite materials is examined. Using ice-templating of ceramic suspensions and subsequent metal infiltration, we demonstrate that the concept of ordered hierarchical design can be applied to create fine-scale laminated ceramic–metal (bulk) composites that are inexpensive, lightweight and display exceptional damage-tolerance properties. Specifically, Al 2 O 3 /Al–Si laminates with ceramic contents up to approximately 40 vol% and with lamellae thicknesses down to 10 µm were processed and characterized. These structures achieve an excellent fracture toughness of 40 MPa√m at a tensile strength of approximately 300 MPa. Salient toughening mechanisms are described together with further toughening strategies.

scholarly journals Study on Interface Reaction of BN-Al Composite Materials-ChemRxiv.pdf

2021 ◽  
Author(s):  
Chao Wang ◽  
Mengge Dong ◽  
Lu Zhang ◽  
Xiaozhou Cao ◽  
Xiangxin Xue
Keyword(s):  
Electron Microscopy ◽  
Composite Materials ◽  
Interface Reaction ◽  
Metal Composite ◽  
Infiltration Process ◽  
Transmission Electron ◽  
Al Composite ◽  
Metal Composite Materials ◽  
First Time ◽  
Metal Infiltration

<p>Ceramic-metal composite materials prepared by the metal infiltration process have become the topic of intense research. The interface reaction between ceramic and metal has an important impact on the mechanical properties of composite materials. This article, for the first time, studies the interface reaction between BN and Al. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were both employed to study interface reaction. Studies have shown that there is an intermediate transition interface between metal and ceramic. The interface reaction between Al and BN produces AlN, and there is no close connection among AlN particles. The grain size of AlN is about 1~2μm. The rate order is: Al element > B element > N element.</p>

scholarly journals SHM Supporting Damage Tolerance Design Philosophy As a Challenge for Designers of Future Airframes

2008 ◽  
Vol 6 (3) ◽  
pp. 213-220
Author(s):  
Kamila Kustroń
Keyword(s):  
Lamb Wave ◽  
High Performance ◽  
Damage Tolerance ◽  
Cost Effective ◽  
Maintenance Cost ◽  
Tolerance Design ◽  
Metal Composite ◽  
Design Philosophy ◽  
Current Design ◽  
High Level

SHM Supporting Damage Tolerance Design Philosophy As a Challenge for Designers of Future AirframesDevelopment design pfilosophy of airframes in all the relevant technological fields is important for the evaluation of high performance airframes best to achive high level of safety and satisfy the market needs. Maintenance cost reduction, increased aircraft availability and weight saving are goals which will be reaching by SHM systems as on-line monitoring of the structure health. Irrespective of which materials will be used in the future, the current design philosophy, which is applied today by the structural designers, will be challenged by the new design philosophy based on SHM. The most efective SHM methods are based on Lamb wave techniques. Using the based on Lamb wave techniques would be cost-effective and reliable damage detection is critical for the utilization of metal, composite and hybrid materials. Multitude of diagnostics data requires to use expert systems for effective analysis.

scholarly journals Study on Interface Reaction of BN-Al Composite Materials-ChemRxiv.pdf

2021 ◽  
Author(s):  
Chao Wang ◽  
Mengge Dong ◽  
Lu Zhang ◽  
Xiaozhou Cao ◽  
Xiangxin Xue
Keyword(s):  
Electron Microscopy ◽  
Composite Materials ◽  
Interface Reaction ◽  
Metal Composite ◽  
Infiltration Process ◽  
Transmission Electron ◽  
Al Composite ◽  
Metal Composite Materials ◽  
First Time ◽  
Metal Infiltration

<p>Ceramic-metal composite materials prepared by the metal infiltration process have become the topic of intense research. The interface reaction between ceramic and metal has an important impact on the mechanical properties of composite materials. This article, for the first time, studies the interface reaction between BN and Al. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were both employed to study interface reaction. Studies have shown that there is an intermediate transition interface between metal and ceramic. The interface reaction between Al and BN produces AlN, and there is no close connection among AlN particles. The grain size of AlN is about 1~2μm. The rate order is: Al element > B element > N element.</p>

Biomimetic Applications of Ionic Polymer Metal Composites (IPMC) Actuators - A Critical Review

2014 ◽  
Vol 20 ◽  
pp. 1-10 ◽  
Author(s):  
Muhammad Farid ◽  
Zhao Gang ◽  
Tran Linh Khuong ◽  
Zhuang Zhi Sun ◽  
Naveed Ur Rehman ◽  
...  
Keyword(s):  
Critical Review ◽  
Low Voltage ◽  
Metal Composite ◽  
Ionic Polymer Metal Composite ◽  
Metal Composites ◽  
Ionic Polymer Metal Composites ◽  
Ionic Polymer ◽  
Design And Manufacturing ◽  
Polymer Metal ◽  
Biomedical Field

Biomimetic is the field of engineering in which biological creatures and their functions are investigated and are used as the basis for the design and manufacturing of machines. Ionic Polymer Metal Composite (IPMC) is a smart material which has demonstrated a meaningful bending and tip force after the application of a low voltage. It is light-weighted, flexible, easily actuated, multi-directional applicable and requires simple manufacturing. Resultantly, IPMC has attracted scientists and researchers to analyze it further and consider it for any industrial and biomimetic applications. Presently, the research on IPMC is bi-directional oriented. A few groups of researchers are busy to find out the causes for the weaknesses of the material and to find out any remedy for them. The second class of scientists is exploring new areas of applications where IPMC material can be used. Although, the application zone of IPMC is ranging from micropumps diaphragms to surgical holding devices, this paper provides an overview of the IPMC application in biomimetic and biomedical field.

Metal Coated Functionalized Single-Walled Carbon Nanotubes for Composites Application

2007 ◽  
Vol 561-565 ◽  
pp. 655-658 ◽  
Author(s):  
Qiang Zeng ◽  
Jennifer Luna ◽  
Y. Bayazitoglu ◽  
Kenneth Wilson ◽  
M. Ashraf Imam ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
Metal Composite ◽  
X Ray ◽  
Single Walled Carbon ◽  
Transmission Electron ◽  
Nucleation Sites ◽  
Metal Composite Materials ◽  
Walled Carbon Nanotubes

This study is considered as a method for producing multifunctional metal composite materials by using Single-walled Carbon Nanotubes (SWNTs). In this research, various metals (Ni, Cu, Ag ) were successfully deposited onto the surface of SWNTs. It has been found that homogenous dispersion and dense nucleation sites are the necessary conditions to form uniform coating on SWNTs. Functionalization has been applied to achieve considerable improvement in the dispersion of purified single-walled carbon nanotubes. A three-step electroless plating approach was used and the coating mechanism is described in the paper. The samples were characterized by using scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy, and energy-dispersive X-ray spectroscopy (EDX). The application of coated SWNTs in Titanium will be discussed in this paper.

METAL COMPOSITE MATERIALS BASED ON TITANIUM ALLOYS, REINFORCED WITH REFRACTORY PARTICLES (review)

2021 ◽  
pp. 36-45
Author(s):  
E.I. Krasnov ◽  
◽  
V.M. Serpova ◽  
L.G. Khodykin ◽  
A.V. Gololobov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Composite Materials ◽  
Literature Review ◽  
Titanium Alloys ◽  
Chemical Nature ◽  
Physical And Mechanical Properties ◽  
Metal Composite ◽  
The Matrix ◽  
Metal Composite Materials

Presents a literature review in the field of methods for strengthening titanium and its alloys by introducing various refractory particles into the matrix. The main problematic issues related to the chemical nature of refractory particles and titanium alloys that arise during hardening are briefly described. The main structural, physical and mechanical properties and morphology of such metal composite materials are described. The dependence of the influence of various refractory particles and their amount, as well as the effect of heat treatment on the physical and mechanical properties of microns based on titanium alloys, is presented.

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