Peculate 发表于 2025-3-25 06:07:02
courses, units, and lessons catering to diverse high abilitThis book is a comprehensive study and guide for the classroom teacher, the gifted program coordinator, and the graduate student, who are challenged daily to provide for individual children who differ markedly but come under the umbrella of叙述 发表于 2025-3-25 09:11:30
Superalloy Technology - Today and Tomorrowves to superalloys so as to achieve increases in metal temperature capability, particularly for the hottest stages of the turbine. By the mid 1960’s the rapid development of increasingly sophisticated air cooling designs to combat high turbine temperatures put nickel and cobalt base superalloys at t迫击炮 发表于 2025-3-25 13:20:02
Recent Approaches to the Development of Corrosion Resistant Coatings.The coatings made of intermetallic compounds are mainly aluminides and sometimes silicides. They are most often produced by C.V.D. type techniques, especially pack-cementation. Their formation is generally governed by various diffusional mechanisms..The overlay coatings are made of more or less com英寸 发表于 2025-3-25 19:41:58
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High Temperature Erosion and Erosion-Hot Corrosion of Superalloys and Coatingss in turbine powerplant. Testing techniques have been surveyed and the mechanisms of erosion and erosion-hot corrosion illustrated. Some guidance is given on the requirements for high temperature erosion and erosion-hot corrosion resistance in superalloys and coatings, and methods for the preventionResistance 发表于 2025-3-26 13:35:09
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High Temperature Stability of Pack Aluminide Coatings on IN738LCenerally at the expense of oxidation and corrosion resistance. To enable cheaper, less pure fuels to be burnt in high performance gas turbines it is often necessary to improve surface integrity by the use of protective coatings. This paper describes the formation of typical commercial pack aluminide