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GH4169 is a difficult-to-cut nickel-based superalloy commonly used in aerospace industry. This paper presents a cutting force prediction model in the end milling of GH4169 superalloy with carbide tools by orthogonal experiment. The variance analysis is applied to check the significance of the model, accuracy of the model is verified by experiment. The effect of cutting parameters on the cutting force...
Atomically sharp, high density tungsten nanotip arrays are fabricated by a novel nanocasting technique. Such emitter arrays show excellent field emission properties with a low turn-on field, a high field enhancement factor and good emission stability. They also have better vacuum tolerance than most field emission nanostructures due to a closer cathode-anode spacing allowed by the perfect tip alignment...
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