舶用ディゼルエンジンに使用するノズルの腐食試験と実績(<小特集>腐食防食小特集)

概要

論文の詳細を見る
To determine a suitable material to assure the long life of fuel injection nozzles equipped in marine diesel engines, the hot corrosion test in accordance with the method prescribed by Japan Society for the Promotion of Science and other accompanying tests were carried out on several candidate materials. The materials selected by these laboratory tests were examined in the field by making the nozzeles for the engines in service. In these field tests, the high Ni-Cr-Al alloy nozzle tips had 28 times the life of the original nozzle tips made of material SKH51. It can be expected that the high Ni-Cr-Al alloy nozzle tips will be free from any maintenance for more than two years. These field test results generally agreed with the laboratory test results and proved that a suitable material could be successfully selected by the laboratory tests. In future, to obtain the laboratory test results closer to the field test results, it will be necessary that laboratory tests be so carried out as to simulate the service condition of the nozzles in the field or that bench tests be performed in addition to verify the laboratory test results. Finally, these tests have proved that for the present the high Ni-Cr-Al alloy is most effectively applied as the material for the fuel injection nozzle tips in the marine diesel engines on which low grade fuel oil is being often used recently.
社団法人日本材料学会の論文
1989-01-15