Results for 'titan'

Thermodynamic Mechanism of Cryogenic Air Minimum Quantity Lubrication Grinding

The achievement of high-efficiency and precise grinding of difficult-to-cut metals-like titanium alloys-is essential in the aerospace industry. However, the process often results in thermal damage to the workpiece surface, posing a significant technical challenge. While minimum quantity lubrication (MQL) has been used to aid titanium alloy grinding, its effectiveness is limited by insufficient heat dissipation and lubrication. As an alternative to normal temperature air for carrying micro-lubricants, Cryogenic air has shown promise in improving oil film heat transfer and lubrication performance in the grinding zone, thus reducing workpiece surface thermal damage. The experimental state of the technology demands more comprehensive studies on its effectiveness and on the underlying mechanisms. Thermodynamic Mechanism of Cryogenic Air Minimum Quantity Lubrication Grinding addresses these challenges by providing a theoretical framework for understanding and optimizing cryogenic air minimum quantity lubrication in grinding processes, particularly for titanium alloys. It explores the physical characteristics of lubricants under cryogenic conditions, the influence of low temperatures on atomization effects, droplet formation dynamics, and heat transfer mechanisms within the grinding zone. By establishing quantitative relationships between cryogenic air parameters and lubricant properties, the book lays a foundation for enhancing the cooling lubrication mechanism of cryogenic air MQL in grinding processes. Researchers, scholars, and graduate students in universities and research institutes focusing on machining will find this book invaluable, as it goes beyond the theoretical insights into practical solutions to enhance grinding efficiency and reduce thermal damage.

1. Michael , Perry

Kuriose Pflanzen

Willkommen in der Welt der außergewöhnlichen Pflanzen und Pilze! Von verblüffend über giftig bis hin zu schmerzstillend - "Mr. Plant Geek" Michael Perry nimmt Sie mit auf eine Entdeckungstour zu den 40 kuriosesten Pflanzen und Pilzen. Unterhaltsam erklärt er, was jede dieser Arten so besonders macht. Mit detaillierten Illustrationen und spannenden Fakten ist dies ein witzig-schräges, aber auch informatives Pflanzenbuch für Naturliebhaber*innen und Hobbygärtner*innen. Auf den Spuren der skurrilsten Pflanzen der Erde: - Wunderbar verrückt aufbereitete "Freakshow" der 40 faszinierendsten Pflanzen und Pilze: egal ob klein oder groß, wohlriechend oder stinkend, schön oder hässlich- Welche Blume sieht aus wie Darth Vader? Und wieso gilt die Telegrafenpflanze als Dancing Queen?- Überraschende Fakten, spannende Pflanzenporträts und witzige Reiseerlebnisse des Autoren bieten großen Lesespaß So erstaunlich können Pflanzen sein! Schurkenpflanzen, die sich ganz schön kriminell benehmen oder tanzende Superhelden - dieses Buch hält viele außergewöhnliche Infos bereit: von der Wasserfalle, die ihre Beute innerhalb von 10-20 Millisekunden schnappt, über die Enten-Orchidee bis zum gruseligen Krakenpilz. Dieses Buch bringt Ihnen nicht nur die kulturelle Bedeutung und den Lebensraum der Pflanzen und Pilze näher, sondern zeigt, ob und wie Sie sie auch selbst anbauen können. Seien Sie gespannt! Ein verrücktes und humorvolles Buch, das allen Naturliebhaber*innen einen ganz besonderen Einblick in die Welt der skurrilen Pflanzen und Pilze gibt.

Biotic Stress Management of Crop Plants using Nanomaterials

This book summarizes nanotechnology based agricultural research for crop productivity and managing various plant pathogens. It deals with the application of nanomolecules for quick, cost-effective, and precise plant disease diagnostic procedures, plant pests and disease management, nano-pesticides, and nano-diagnostics.

1. Mary Higby Schweitzer
2. Elena Rita Schroeter
3. Charles Doug Czajka

Dinosaurs

This textbook introduces research on dinosaurs by describing the science behind how we know what we know about dinosaurs. A wide range of topics is covered, from fossils and taphonomy to dinosaur physiology, evolution, and extinction. In addition, sedimentology, paleo-tectonics, and non-dinosaurian Mesozoic life are discussed.

1. Mary Higby Schweitzer
2. Elena Rita Schroeter
3. Charles Doug Czajka

Dinosaurs

This textbook introduces research on dinosaurs by describing the science behind how we know what we know about dinosaurs. A wide range of topics is covered, from fossils and taphonomy to dinosaur physiology, evolution, and extinction. In addition, sedimentology, paleo-tectonics, and non-dinosaurian Mesozoic life are discussed.

1. Glen Andrew , Porter
2. Rwei Ching , Chang
3. Ching Kong , Chao

Characteristics and Thermal Behavior of Sputtered Titanium Thin Films on Various Substrates

Titanium films are growing in popularity, and are soon expected to replace copper for metallization purposes. However, the thermal stress behavior of titanium films had not been extensively studied, and therefore not clearly understood. Thus, the main goal of this work was to develop a systematic process to analyze and model the d¿/dT evolution between 20ºC and 300ºC, in sputtered, titanium thin films. A biaxial stress state has been legitimately assumed. In the laboratory, titanium films, with a nominal thickness of 200 nm, were deposited on five different kinds of unheated substrates, by RF magnetron sputtering. These substrates included titanium plate, soda-lime glass and three kinds of p-type silicon wafers, having crystallographic orientations of (100), (110) and (111). X-ray diffraction was used to characterize the crystallographic evolution with respect to temperature. By utilizing a heating chamber and special tooling, the lattice spacings were measured in-situ, and the thermal stress behaviors were estimated with either the sin2¿ method or the d-spacing method.