流動海水による舶用エンジン過給機内の腐食生成物

DOI Web Site Web Site 被引用文献1件

書誌事項

タイトル別名
  • Corrosion Products in Supercharger of Marine Engine by Running Sea Water
  • リュウドウ カイスイ ニ ヨル ハクヨウ エンジン カキュウキナイ ノ フショ
  • ジーゼルエンジンの高能率化のための排ガス冷却条件に関する研究 (第1報)
  • The study of cooling condition of exhaust gas for high efficient marine diesel engine [Part 1]

この論文をさがす

抄録

For the cooling of exhaust gas of marine engine, natural sea water or pressed fresh water are employed. Sometimes, a lot of corrosion products were formed in the supercharger and disturbed cooling effect. Cylindrical test pieces were prepared with the same quality of cast iron of the supercharger.<br>Flow sea water outside of the test pieces and heat them by cartridge heater as required. The flow rates were 0.1-0.7m/s and the temperatures of the test pieces were kept at 45°C-70°C is six steps. The flow rates and temperatures were recorded automatically.<br>The corrosion products on the test pieces were tested by X-ray diffractometer and α-Fe2O3, γ-Fe2O3, Fe(OH)2, Fe(OH)3, γ-FeOOH and Fe3O4 were analyzed by their reflect angles.<br>In the case at 44°C unheated, majority corrosion product was approximately γ-FeOOH (45%), and others were Fe3O4 (20%), γ-Fe2O3 (14%) and α-Fe2O3 (7%). On the other hand, heated at 49°C, the order was Fe3O4 (46%), γ-Fe2O3 (26%), α-Fe2O3 (9%) and γ-FeOOH (7%).<br>In the effect of flow rate at 45°C and 55°C, α-Fe2O3 and γ-FeOOH were decreasing and Fe3O4 and rate of corrosion were increasing with the flow rate at 45°C, and α-Fe2O3 and γ-FeOOH were decreasing and rate of corrosion was increasing with the flow rate at 55°C.<br>The origin of the corrosion was presumed by the composition of the corrosion products in the supercharger.

収録刊行物

被引用文献 (1)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ