フラックス被覆処理ステンレス鋼板上でのＢＡｇ‐５の広がり　Ｉ　　ＮｉＣｌ?S２?T，ＦｅＣｌ?S３?T添加の場合

• 岡本 郁男

  大阪大学溶接工学研究所

• 大森 明

  大阪大学溶接工学研究所

• 竹本 正

  大阪大学溶接工学研究所

• 三宅 正昭

  大阪府大工業短期大学部

• 中川 恵右

  大阪府大工業短期大学部

書誌事項

タイトル別名

• Spreading of BAg-5 on Pre-flux Coated Stainless Steel Plate (Report 1)
• NiCl<SUB>2</SUB> FeCl<SUB>3</SUB>添加の場合

抄録

Authors had reported already that the spreading of BAg alloy on mild and stainless steels could be improved by adding small amounts of NiCl₂ or FeCl₃ to KCl-LiCl cut. salt flux. In this study, then, when a 18Cr-8Ni stainless steel plate was pre-coated with the mixed salt fluxes and was heated, the corrosion products formed on the plate surface were analized by SEM and X-ray diffractometer. On the other hand, a spreading test of BAg-5 on the same treated plate was done, using only KCl-LiCl eut. salt flux.<BR>From these experiments, the effect of used fluxes on the spreading of BAg-5 was concluded as follows;<BR>1) The addition of NiCl₂ to KCI-LiCl eut. salt promotes the dissolution of chromium and iron from the stainless steel and the resultant corroded surface becomes spongy intermetallic compound, FeNi₃, furthermore, the particles layers of nickel were precipitated on the compound owing to electrochemical reaction.<BR>2) The addition of FeCl₃ to the eut. salt also promotes the corrosion of stainless steel and the surface becomes the spongy compound, FeNi₃.<BR>3) The spread area of BAg-5 on the particles layer of nickel was considerably larger than that on the compound, FeNi₃. This result showed that the wettability of intermetallic compound, FeNi₃, is not superior to the each wettability of both constituent elements, Fe and Ni.<BR>4) The spread area of BAg-5 on the particles layer of nickel was larger than that on a nickel plate, because the former was larger than the latter in a real surface area to be wet. Furthermore, since the spread area depended on the total surface area of particles distributed on the most outside layer, the amount of NiCl₂ necessary to form mono-particle layer was considered to be about 10wt%.<BR>5) "De-chromiumnisztion" phenomenon on the surface of stainless steel may be one of the important effect of flux used.

収録刊行物

• 溶接学会誌

  溶接学会誌 48 (4), 237-241, 1979

  一般社団法人 溶接学会

キーワード

• Metals and Alloys
• Surfaces, Coatings and Films
• Mechanical Engineering
• Mechanics of Materials

詳細情報

• CRID: 1390001206501315584
• NII論文ID: 130003763489
• DOI: 10.2207/qjjws1943.48.237
• ISSN: 18837204
• ISSN: 00214787
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可