Title

The effect of particle shape and size on erosion ofaluminum alloy 1100 at 90° impact angles

Document Type

Article

Date of Original Version

7-1-1983

Abstract

Aluminum alloy 1100 was eroded by 70 μm and 210 μm silica spheresand by 210 μm angular quartz particles at a velocity of 122 m s-1 and at an impact angle of 90°. Extensive scanning electron microscopy examination of eroded surfaces, erosion debris and metallographiic sections, together with transmission electron microscopy examination of debris and eroded surfaces, was conducted. Hills and valleys were formed during the 'incubation period of erosion for all types of erodent. During steady state erosion small non-fragmenting erodent removed material by a flaking mechanism in valleys. For larger fragmenting erodent four additional mechanisms aiding erosion were identified. Furthermore, a threshold particle size for hill and valley formation is proposed. The implication of this on the magnitude of the erosion rate is discussed. © 1983 Elsevier Sequoia.

Publication Title

Wear

Volume

88

Issue

2

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