Cover Picture: Macromol. Mater. Eng. 3/2015

Abstract

Front Cover: Electrospinning is an attractive technique to generate supramolecular macro‐ and nanofibers. Here, a comprehensive structure‐property relationship between chemical structure, spinnability, and fiber morphology is presented for several classes of small molecules. For the characterization of electrospun morphologies, scanning electron microscopy (SEM) is the tool of choice. Among thousands of images taken in the course of a project, some pictures reveal very peculiar and curious details, with Pinocchio shown as the center piece. To discover such images during hours of tedious SEM work demonstrates that science can be a lot of fun. Further details can be found in the article by J. C. Singer, A. Ringk, R. Giesa, and H.‐W. Schmidt* http://doi.wiley.com/10.1002/mame.201400296.

Microstructures and high temperature properties of spray formed niobium‐containing M3 high speed steel

“…Presently, spray forming process has been proven to be a powerful process for the production of high speed steels with manifold excellent performance. With further densification treatment, the as-deposited high speed steel could be fully compact and outstanding properties can be obtained [8][9][10][11][12][13][14][15][16][17][18][19][20]. Niobium, as a stronger carbide forming element than vanadium, will mainly form very stable MC-type carbides for its high carbon affinity, therefore it can be used in high speed steels as a carbide-forming element [21,22].…”