Calculating Vacuum Metal Infiltration Rate and Depth of BN-Al Composite Materials

2021 ◽  
Author(s):  
Chao Wang ◽  
Zhefu Li ◽  
Mengge Dong ◽  
Lu Zhang ◽  
Jianxing Liu ◽  
...  
Keyword(s):  
Composite Materials ◽  
Future Study ◽  
Infiltration Rate ◽  
Infiltration Depth ◽  
Al Composite ◽  
The Future ◽  
Calculation Results ◽  
First Time ◽  
Metal Infiltration

<p>For the first time, the metal infiltration depth and infiltration rate of the BN-Al composite prepared by metal infiltration have been calculated and studied. The calculation results show that the infiltration depth gradually increases with the increase of time, and the final infiltration depth can reach 0.21 m. As time increases and voids decrease, the infiltration rate gradually decreases. The maximum impregnation rate is 0.65cm·min<sup>-1</sup>. This calculation and research provide a positive idea for the calculation and prediction of metal infiltration in void media in the future study.</p>

Calculating Vacuum Metal Infiltration Rate and Depth of BN-Al Composite Materials

2021 ◽  
Author(s):  
Chao Wang ◽  
Zhefu Li ◽  
Mengge Dong ◽  
Lu Zhang ◽  
Jianxing Liu ◽  
...  
Keyword(s):  
Composite Materials ◽  
Future Study ◽  
Infiltration Rate ◽  
Infiltration Depth ◽  
Al Composite ◽  
The Future ◽  
Calculation Results ◽  
First Time ◽  
Metal Infiltration

<p>For the first time, the metal infiltration depth and infiltration rate of the BN-Al composite prepared by metal infiltration have been calculated and studied. The calculation results show that the infiltration depth gradually increases with the increase of time, and the final infiltration depth can reach 0.21 m. As time increases and voids decrease, the infiltration rate gradually decreases. The maximum impregnation rate is 0.65cm·min<sup>-1</sup>. This calculation and research provide a positive idea for the calculation and prediction of metal infiltration in void media in the future study.</p>

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 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 Perceptions of A.A. Akhmatova and her works in China

2019 ◽  
Vol 24 (2) ◽  
pp. 223-234
Author(s):  
Luwei Zou ◽  
Maria V. Mikhailova
Keyword(s):  
Significant Influence ◽  
Future Study ◽  
Translation Strategies ◽  
The Real ◽  
The Future ◽  
Chinese Scholars ◽  
Female Voices ◽  
First Time ◽  
Poetic Culture ◽  
Chinese Public

This thesis is devoted to studying the acceptance extent of A.A. Akhmatova and her works in China. Not enough attention was paid to the acceptance extent of foreign poetess’s works while conducting contemporary studies about Akhmatova. The analyses of Chinese literary works about the Akhmatova poetic heritage and the existing assessments of her poetry are carried out in this thesis for the first time. The author insists that the acceptance of Akhmatova’s works in China goes through several stages. It was in the late 20 century that the Chinese public firstly acquainted with her poems. Yet, the real discovery of her poems occurred only in the 1980s. And at the turn of the XX-XXI centuries, there was a genuine Akhmatova study boom, which began to carry out studies about her biographies and early lyrical works. Associating with analyses of foreign studies about her works and taking into account the poetess’s translation strategies of permeating Chinese poems to Russian poetic space, the researchers identified her significant influence on Chinese poetic culture. Attention is also drawn to analyze the comparative works within the framework of the similarity of “female voices” in poetry. This thesis also indicates the future study trend of Akhmatova in China, which will certainly trigger closer interactions and discussions among Chinese scholars who focus on studying the poetess’s heritage.

scholarly journals Development of advanced SiC/Al Composite Materials Manufacturing of Preform Wires by Liquid Metal Infiltration

1989 ◽  
Vol 75 (9) ◽  
pp. 1555-1562 ◽  
Author(s):  
Yoshikazu IMAI ◽  
Yoshikazu TANAKA ◽  
Hiroshi ICHIKAWA ◽  
Toshikatsu ISHIKAWA
Keyword(s):  
Composite Materials ◽  
Liquid Metal ◽  
Al Composite ◽  
Liquid Metal Infiltration ◽  
Metal Infiltration

The Internal Stakes of the 2005 Elections: The Struggle for Influence in Egypt's National Democratic Party

2007 ◽  
Vol 61 (1) ◽  
pp. 95-111
Author(s):  
Virginie Collombier
Keyword(s):  
Democratic Party ◽  
Political System ◽  
The Political ◽  
Legislative Elections ◽  
The Future ◽  
External Actors ◽  
First Time

Beyond the relative opening of the political system that characterized 2005 in Egypt — with the President being elected directly for the first time and the increased competition allowed during legislative elections — the 2005 elections also constituted an opportunity to consider and evaluate the internal struggles for influence under way within the ruling National Democratic Party (NDP). In a context largely influenced by the perspective of President Husni Mubarak's succession and by calls for reform coming from both internal and external actors, changes currently occurring at the party level may have a decisive impact on the future of the Egyptian regime.

Anisotropic Elasticity

1996 ◽  
Author(s):  
T. T. C. Ting
Keyword(s):  
Composite Materials ◽  
Elastic Constants ◽  
Piezoelectric Materials ◽  
Anisotropic Materials ◽  
Anisotropic Elasticity ◽  
Stress Singularities ◽  
Comprehensive Survey ◽  
The Subject ◽  
Key Topics ◽  
First Time

Anisotropic Elasticity offers for the first time a comprehensive survey of the analysis of anisotropic materials that can have up to twenty-one elastic constants. Focusing on the mathematically elegant and technically powerful Stroh formalism as a means to understanding the subject, the author tackles a broad range of key topics, including antiplane deformations, Green's functions, stress singularities in composite materials, elliptic inclusions, cracks, thermo-elasticity, and piezoelectric materials, among many others. Well written, theoretically rigorous, and practically oriented, the book will be welcomed by students and researchers alike.

The Future Study of Public Opinion: A Symposium

1987 ◽  
Vol 51 (part 2: Supplement: 50th Anniversary Issue) ◽  
pp. S173
Author(s):  
Leo Bogart ◽  
James R. Beniger ◽  
Richard A. Brody ◽  
Irving Crespi ◽  
James A. Davis ◽  
...  
Keyword(s):  
Public Opinion ◽  
Future Study ◽  
The Future

scholarly journals S-N Curve Characterisation for Composite Materials and Prediction of Remaining Fatigue Life Using Damage Function

2021 ◽  
Vol 5 (3) ◽  
pp. 76
Author(s):  
Ho Sung Kim ◽  
Saijie Huang
Keyword(s):  
Fatigue Life ◽  
Composite Materials ◽  
Loading Rate ◽  
Theoretical Method ◽  
Damage Function ◽  
Simple Method ◽  
Arbitrary Choice ◽  
Number Of Cycles ◽  
First Time ◽  
Remaining Fatigue Life

S-N curve characterisation and prediction of remaining fatigue life are studied using polyethylene terephthalate glycol-modified (PETG). A new simple method for finding a data point at the lowest number of cycles for the Kim and Zhang S-N curve model is proposed to avoid the arbitrary choice of loading rate for tensile testing. It was demonstrated that the arbitrary choice of loading rate may likely lead to an erroneous characterisation for the prediction of the remaining fatigue life. The previously proposed theoretical method for predicting the remaining fatigue life of composite materials involving the damage function was verified at a stress ratio of 0.4 for the first time. Both high to low and low to high loadings were conducted for predicting the remaining fatigue lives and a good agreement between predictions and experimental results was found. Fatigue damage consisting of cracks and whitening is described.

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