Topic
Gray iron
About: Gray iron is a research topic. Over the lifetime, 448 publications have been published within this topic receiving 3525 citations. The topic is also known as: gray cast iron & grey iron.
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TL;DR: In this article, the wear resistance of three different types of gray cast iron (gray iron grade 250, high carbon gray iron and titanium alloyed gray iron), used in brake disc rotors, was studied and compared with the results obtained with a compact graphite iron (CGI).
162 citations
TL;DR: In this paper, three different cast irons, gray, nodular and compact iron, with different chemical compositions were subjected to austempering to investigate the effects of graphite morphology, composition and Austempering on tribological behavior.
116 citations
TL;DR: In this paper, the effect of graphite flakes and ferrite in the gray cast iron disks on fade phenomena and the level of the coefficient of friction was investigated on a pad-on-disk type tribotester.
112 citations
TL;DR: In this paper, the effect of transfer layer formation on friction performance was studied using a brake friction material containing 15 ingredients, and the authors found that the amount of transferred layer formation was highly dependent on the relative amount of ingredients in the friction material and temperature.
Abstract: The effect of transfer layer formation on friction performance was studied using a brake friction material containing 15 ingredients. Based on a base formulation, 13 friction material specimens containing different relative amounts of ingredients were produced and they were tested on gray iron disks using a small-scale friction tester. A non-destructive four-point probe technique to measure electrical resistance of the thin film was used to estimate the transfer layer thickness. Results showed that the transfer layer formation was highly dependent on the relative amount of ingredients in the friction material and temperature. Among various ingredients, solid lubricants and iron powders increased the transfer layer thickness but no apparent correlation between transfer layer thickness and the coefficient of friction was found. Strong influence from individual ingredients was observed, dominating the friction characteristics during sliding. On the other hand, the thick transfer layers on the disk surface tended to reduce the friction material wear and the amplitude of the friction coefficient oscillation during sliding.
104 citations
TL;DR: In this paper, the thickness, microhardness and microstructure of the boride layer of cast irons were investigated and the wear behavior of the irons was investigated on a pin-on disk test apparatus.
98 citations