Failure Analysis of Internal Combustion Exhaust Valve
- 10.2991/asei-15.2015.47How to use a DOI?
- Corrosion; Internal combustion valves; adhesive wear; Oxidative;
The exhaust valves system is very important for internal combustion engines and experienced severe physical and chemical environment including frequent impact, high and varying temperature, exhaust gas’ chemical corrosion and deposition of fine dust, et al. This paper presents a failure analysis of two new internal combustion exhaust valves used not more than 200 houses. The fracture surfaces were investigated by SEM and optical microscope. And EDS was used the clarified the related chemical elements. Results of present investigation showed that instability of oxidation film that formatted on the seal face during the early stage, was a crucial factor of the failure. In this case, the film was thin and porous, so high temperature exhaust gas could reaction with matrix welding layer. Consequently, the welding layer loses its wear resistant property during the subsequence service procedure.
- © 2015, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Yanpeng Feng AU - Haijun Tang AU - Chunguang Li AU - Xiaoming Ma AU - Mingli Xie PY - 2015/05 DA - 2015/05 TI - Failure Analysis of Internal Combustion Exhaust Valve BT - Proceedings of the 2015 International conference on Applied Science and Engineering Innovation PB - Atlantis Press SP - 228 EP - 231 SN - 2352-5401 UR - https://doi.org/10.2991/asei-15.2015.47 DO - 10.2991/asei-15.2015.47 ID - Feng2015/05 ER -