Abstract

Recently, because the lubricating oil showed a tendency to be emulsified and oxidized by high speed, high output and the extension of maintenance & conservation of marine engine, the cavitation erosion-corrosion at such an environment became a big problem on effective performance of engine. Therefore, there was a need to study the behavior and protection of erosion-corrosion damage, and then applied inhibitor to a protective method of cavitation erosion- corrosion damage. At this time, test environments were marine lubricating oil & various emulsified oil that mixed distilled water and sea water etc., and also used 20KHz, 24.mu.m piezoelectric vibrator as an experimental apparatus of cavitation erosion. With this apparatus, we investigated an influence of the emulsified oil on characteristics of erosion-corrosion and protection for erosion-corrosion by inhibitor at slide bearing metals.

Keywords

• Cavitation erosion-corrosion;
• Piezoelectric vibrator;
• Lubricating oil emulsified;
• Weight loss;
• Corrosion sensitivity;
• Chromate inhibitor;
• Protective efficiency;
• Oil space;
• Slide bearing metals

• 캐비테이션 浸蝕-腐蝕;
• 壓電振動子;
• 乳化 潤滑油;
• 무게 減少量;
• 腐蝕 感受性;
• 크롬산염 抑制劑;
• 抑制率;
• 油隔;
• 슬라이드 베어링 合金材;