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Lead-Free Piezoelectric Materials
Provides in-depth knowledge on lead-free piezoelectrics - for state-of-the-art, environmentally friendly electrical and electronic devices! Lead zirconate titanate ceramics have been market-dominating due to their excellent properties and flexibility in terms of compositional modifications. Driven by the Restriction of Hazardous Substances Directive, there is a growing concern on the toxicity of lead. Therefore, numerous research efforts were devoted to lead-free piezoelectrics from the beginning of this century. Great progress has been made in the development of high-performance lead-free piezoelectric ceramics which are already used, e.g., for power electronics applications. Lead-Free Piez...
WANDERING JOURNEY 05
WANDERING JOURNEY 05 Li Qiang laughed and said: "Eh, why is no one saying anything? Can't anyone understand? No way, the city lord's grandmother?" The city lord was almost scared to death by him, saying: "How do you know this language? Aiya, stop calling grandma, it's so annoying, just call me city lord. Let's go into the inner hall to talk, everyone else step back, Elder Wen will come with me." Lan Xin's expression was curious, she said in a low voice: "Senior sister, let's go listen to this weirdo talk, okay?" The city lord seemed to really favor this disciple, saying: "This child... alright, you and your senior sister go together." Lan Xin pulled Piao Yuan and happily laughed and said: "A...
Understanding oxidation resistance of Pt-based alloys through computations of Ellingham diagrams with experimental verifications
Thermodynamic calculations of Ellingham diagrams and the forming oxides have been performed relevant to the Pt-based alloys Pt82Al12M6 (M = Cr, Hf, Pt, and Ta). The predicted Ellingham diagrams indicate that the elements Hf and Al are easy to oxidize, followed by Ta and Cr, while Pt is extremely difficult to oxidize. Oxidation experiments characterized by X-ray diffraction (XRD) and electron probe micro-analyzers verify the present thermodynamic predictions, showing that the best alloy with superior oxidation resistance is Pt82Al12Cr6, followed by Pt88Al12 due to the formation of the dense and continuous α-Al2O3 scale on the surface of alloys; while the worse alloy is Pt82Al12Hf6 followed by Pt82Al12Ta6 due to drastic internal oxidation and the formation of deleterious HfO2, AlTaO4, and Ta2O5. The present work, combining computations with experimental verifications, provides a fundamental understanding and knowledgebase to develop Pt-based superalloys with superior oxidation resistance that can be used in ultra-high temperatures.
Jing Feng
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WANDERING JOURNEY 07
WANDERING JOURNEY 07 The sword mist was like a high-speed excavator that kept rotating, and the dirt from the wall in front kept flying back behind Li Qiang. Mi'er sighed, "Big brother, you're really amazing, no one uses flying swords to clear the way, wow... True Illusion Sword Qi is really terrifying, even rocks turn into dust!" Li Qiang laughed and said, "No need for True Illusion Sword Qi, Mi'er, as long as it's a flying sword, this kind of barrier can't trap cultivators." Mi'er giggled and said, "People are praising you, hehe, big brother, don't you think it's too easy?" Li Qiang laughed and said, "Little girl, don't play tricks here." Mi'er suddenly felt wronged and said, "Big brother ...
Advances in Artificial Intelligence and Security
The 3-volume set CCIS 1586, CCIS 1587 and CCIS 1588 constitutes the refereed proceedings of the 8th International Conference on Artificial Intelligence and Security, ICAIS 2022, which was held in Qinghai, China, in July 2022. The total of 115 full papers and 53 short papers presented in this 3-volume proceedings was carefully reviewed and selected from 1124 submissions. The papers were organized in topical sections as follows: Part I: artificial intelligence; Part II: artificial intelligence; big data; cloud computing and security; multimedia forensics; Part III: encryption and cybersecurity; information hiding; IoT security.
Man-Machine-Environment System Engineering: Proceedings of the 21st International Conference on MMESE
Man-Machine-Environment System Engineering: Proceedings of the 21st Conference on MMESE is the academic showcase of best research papers selected from more than 500 submissions each year. From this book reader will learn the best research topics and the latest development trend in MMESE design theory and other human-centered system application.MMESE focus mainly on the relationship between Man, Machine and Environment. It studies the optimum combination of man-machine-environment systems. In the system, the Man means the working people as the subject in the workplace (e.g. operator, decision-maker); the Machine means the general name of any object controlled by the Man (including tool, Machi...
WANDERING JOURNEY 13
WANDERING JOURNEY 13 Li Qiang and Mi'er appeared in mid-air, the crowd below seemed to be swept by a gust of wind, and suddenly there was a great chaos. A group of experts flew into the air, surrounding the two people in large numbers. The two cultivators in the lead slowly advanced, one on the left and one on the right standing right in front of Li Qiang and Mi'er. These two people both had the cultivation level of the Body Integration stage. In the cultivation world, cultivators with the cultivation level of the Body Integration stage could be considered as high-level grandmasters. Li Qiang was not like Xuan Long, who could freely transform and conceal his cultivation level. Although he ha...
Pulse Diagnosis in Early Chinese Medicine
A study of the earliest extensive account of Chinese pulse diagnosis, focusing on a biography of Chunyu Yi.
