This volume contains papers from the 9th international conference on key engineering materials (9th ickem 2019). The 2019 edition of the ickem conference was held in oxford university, the united kingdom on mar. 29 - apr. 1, 2019. The collected papers are focused on research in the areas of biomaterials, novel composite and polymer materials, ceramics, steel, alloys, building materials, materials processing technology, material performance analysis, and engineering evaluation.
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