A Reaction Synthesis Approach to Additively Manufacture Net-Shape Chromium Carbide and Non-Oxide Refractory Ceramics

Grain boundaries have long held a special significance to ceramicists. In part, this has been because it has been impossible until now to actually observe the boundaries themselves. Just as important, however, is the fact that the grain boundaries and their environs have a determing influence on both the mechanisms by which powder compaction occurs during fabrication, and on the overall mechanical properties of the material. One area where the grain boundary plays a particularly important role is in the high temperature strength of hot-pressed ceramics. This is a subject of current interest as extensive efforts are being made to develop ceramics, such as silicon nitride alloys, for high temperature structural applications. In this presentation we describe how the techniques of lattice fringe imaging have made it possible to study the grain boundaries in a number of refractory ceramics, and illustrate some of the findings.

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Reaction Synthesis of Annealed Ni-50at%Al Powder Compact

Korean Journal of Metals and Materials ◽

10.3365/kjmm.2011.49.10.790 ◽

2011 ◽

Vol 49 (10) ◽

Keyword(s):

Powder Compact ◽

Reaction Synthesis ◽

Al Powder

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A Synthesis Approach to Uncertain Systems with Parametric uncertainties

1991 American Control Conference ◽

10.23919/acc.1991.4791896 ◽

1991 ◽

Author(s):

Yanlin Li ◽

E. B. Lee

Keyword(s):

Uncertain Systems ◽

Parametric Uncertainties ◽

Synthesis Approach

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Faculty Opinions recommendation of Integrated Strategy for Lead Optimization Based on Fragment Growing: The Diversity-Oriented-Target-Focused-Synthesis Approach.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.733419914.793547526 ◽

2018 ◽

Author(s):

John Lowe

Keyword(s):

Lead Optimization ◽

Integrated Strategy ◽

Synthesis Approach

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Multiple Access using Time Modulated Array with Single RF Chain

Recent Advances in Electrical & Electronic Engineering (Formerly Recent Patents on Electrical & Electronic Engineering) ◽

10.2174/2352096511666180705120210 ◽

2019 ◽

Vol 12 (5) ◽

pp. 395-401

Author(s):

Xu He ◽

Yuan Ding ◽

Gaojian Huang

Keyword(s):

Power Efficiency ◽

Multiple Access ◽

Narrow Band ◽

Average Power ◽

Access Technology ◽

Signal Peak ◽

Single Radio ◽

Rf Chain ◽

Synthesis Approach ◽

Single Rf Chain

Background: A new wireless multiple access technology enabled by using Time Modulated Arrays (TMAs) is proposed in this paper. Methods: It benefits due to the requirement of only a single Radio Frequency (RF) chain, compared with other multiple-RF-chain schemes. Results: As a result, it is able to greatly reduce the system cost, energy consumption, and complexity. Conclusion: In addition, the signal through the single RF chain is narrow-band modulated, reducing the signal Peak-to-Average-Power-Ratio (PAPR), thus, further enhancing the power efficiency of the RF chain, especially for power amplifiers. The operation principle and synthesis approach are elaborated in this paper, and are demonstrated with two examples.

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