TY - CONF A1 - Wolter, Christian A1 - Gradt, Thomas T1 - A study on metal sulphides in tribofilms of modelled brake wear debris under variable humidity N2 - Metal sulphides are needed in brake pad formulations in addition to graphite to compensate the influence of different environments. The sensitivity to humidity differs a lot for each single constituent. Only one component is not sufficient for stabilising the COF and it is also necessary to add more components than only one metal sulphide to graphite. Furthermore, a good mixing process inside the third body during braking is necessary to prevent formation of solid lubricant films which are detrimental for braking. Nevertheless, not every metal sulphide acts as a solid lubricant but most of them have the ability for stabilizing the friction coefficient. T2 - Europe's braking technology Conference & Exhibition (EuroBrake 2017) CY - Dresden, Germany DA - 02.05.2017 KW - Metal sulphides KW - Pin-on-disc KW - Third body KW - Humidity KW - Powders mixtures PY - 2017 AN - OPUS4-40154 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -